Hampshire Avon at Knapp Mill
EA name: HAMPSHIRE AVON AT KNAPP MILL
Environment Agency sampling point SW-50280271 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 22 Jul 2026, 12:262 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 since 17 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 415461, 93793As published, to the nearest 1 m. Open in a map
- River, by its own name
- Hampshire Avon
- River, by the map
- River AvonPlaced on a river whose name partly matches its own, 17 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Nearest gauge upstream
- Knapp Mill On the River Avon · 0.6 km along the river
- Why it was sampled
- Monitoring (UK govt policy - not GQA or RE) (28 samples)
Environmental monitoring statutory (EU directives) (4 samples)
Monitoring (national agency policy) (1 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
115.1%
Sampled 22 Jul 2026, 2 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | 115.1 | 115.1% |
| 26 Jun 2026, 09:59 | 90.8 | 90.8% |
| 18 May 2026, 09:43 | 100.7 | 100.7% |
| 17 Apr 2026, 10:21 | 99.5 | 99.5% |
| 25 Mar 2026, 09:11 | 96.6 | 96.6% |
| 3 Feb 2026, 12:59 | 98.2 | 98.2% |
| 20 Jan 2026, 09:17 | 91.4 | 91.4% |
| 16 Dec 2025, 09:03 | 96.3 | 96.3% |
| 28 Nov 2025, 09:12 | 93 | 93% |
| 30 Oct 2025, 09:42 | 90.7 | 90.7% |
| 18 Sep 2025, 10:48 | 86.9 | 86.9% |
| 8 Aug 2025, 08:59 | 85.8 | 85.8% |
| 30 Jul 2025, 09:58 | 94.8 | 94.8% |
| 3 Jun 2025, 11:22 | 91.7 | 91.7% |
| 10 Apr 2025, 09:04 | 97.2 | 97.2% |
| 6 Mar 2025, 09:58 | 92.9 | 92.9% |
| 14 Feb 2025, 08:37 | 90 | 90% |
| 29 Jan 2025, 09:20 | 86.3 | 86.3% |
| 4 Dec 2024, 11:38 | 86.3 | 86.3% |
| 20 Nov 2024, 10:20 | 94.6 | 94.6% |
| 22 Oct 2024, 09:44 | 77.3 | 77.3% |
| 24 Sep 2024, 09:18 | 82.4 | 82.4% |
| 25 Jul 2024, 12:38 | 91.3 | 91.3% |
| 20 Jun 2024, 09:48 | 100 | 100% |
| 13 May 2024, 10:24 | 91.5 | 91.5% |
| 19 Apr 2024, 09:58 | 76.1 | 76.1% |
| 22 Mar 2024, 09:17 | 78.5 | 78.5% |
| 21 Feb 2024, 10:09 | 83.3 | 83.3% |
| 16 Jan 2024, 13:53 | 104 | 104% |
| 6 Dec 2023, 12:34 | 86.5 | 86.5% |
| 20 Nov 2023, 09:38 | 75.7 | 75.7% |
| 17 Oct 2023, 11:21 | 89.4 | 89.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10 mg/l
Sampled 22 Jul 2026, 2 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | 10 | 10 mg/l |
| 26 Jun 2026, 09:59 | 7.43 | 7.43 mg/l |
| 18 May 2026, 09:43 | 10.6 | 10.6 mg/l |
| 17 Apr 2026, 10:21 | 10.4 | 10.4 mg/l |
| 25 Mar 2026, 09:11 | 11.1 | 11.1 mg/l |
| 3 Feb 2026, 12:59 | 11.8 | 11.8 mg/l |
| 20 Jan 2026, 09:17 | 10.6 | 10.6 mg/l |
| 16 Dec 2025, 09:03 | 10.9 | 10.9 mg/l |
| 28 Nov 2025, 09:12 | 10.8 | 10.8 mg/l |
| 30 Oct 2025, 09:42 | 10.2 | 10.2 mg/l |
| 18 Sep 2025, 10:48 | 8.57 | 8.57 mg/l |
| 8 Aug 2025, 08:59 | 8.1 | 8.1 mg/l |
| 30 Jul 2025, 09:58 | 8.67 | 8.67 mg/l |
| 3 Jun 2025, 11:22 | 8.99 | 8.99 mg/l |
| 10 Apr 2025, 09:04 | 11 | 11 mg/l |
| 6 Mar 2025, 09:58 | 11.2 | 11.2 mg/l |
| 14 Feb 2025, 08:37 | 11.4 | 11.4 mg/l |
| 29 Jan 2025, 09:20 | 10.8 | 10.8 mg/l |
| 4 Dec 2024, 11:38 | 10.5 | 10.5 mg/l |
| 20 Nov 2024, 10:20 | 11.7 | 11.7 mg/l |
| 22 Oct 2024, 09:44 | 8.39 | 8.39 mg/l |
| 24 Sep 2024, 09:18 | 8.22 | 8.22 mg/l |
| 25 Jul 2024, 12:38 | 8.55 | 8.55 mg/l |
| 20 Jun 2024, 09:48 | 9.52 | 9.52 mg/l |
| 13 May 2024, 10:24 | 8.97 | 8.97 mg/l |
| 19 Apr 2024, 09:58 | 8.3 | 8.3 mg/l |
| 22 Mar 2024, 09:17 | 8.48 | 8.48 mg/l |
| 21 Feb 2024, 10:09 | 9.47 | 9.47 mg/l |
| 16 Jan 2024, 13:53 | 13.9 | 13.9 mg/l |
| 6 Dec 2023, 12:34 | 10.9 | 10.9 mg/l |
| 20 Nov 2023, 09:38 | 8.47 | 8.47 mg/l |
| 17 Oct 2023, 11:21 | 9.86 | 9.86 mg/l |
Water temperature
code 0076 · °C
22.1 °C
Sampled 22 Jul 2026, 2 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | 22.1 | 22.1 °C |
| 26 Jun 2026, 09:59 | 25.4 | 25.4 °C |
| 18 May 2026, 09:43 | 12.8 | 12.8 °C |
| 17 Apr 2026, 10:21 | 13.4 | 13.4 °C |
| 25 Mar 2026, 09:11 | 9.1 | 9.1 °C |
| 3 Feb 2026, 12:59 | 7.2 | 7.2 °C |
| 20 Jan 2026, 09:17 | 8.6 | 8.6 °C |
| 16 Dec 2025, 09:03 | 9.8 | 9.8 °C |
| 28 Nov 2025, 09:12 | 8.6 | 8.6 °C |
| 30 Oct 2025, 09:42 | 10.2 | 10.2 °C |
| 18 Sep 2025, 10:48 | 15.9 | 15.9 °C |
| 8 Aug 2025, 08:59 | 18 | 18 °C |
| 30 Jul 2025, 09:58 | 19.6 | 19.6 °C |
| 3 Jun 2025, 11:22 | 16.2 | 16.2 °C |
| 10 Apr 2025, 09:04 | 9.8 | 9.8 °C |
| 6 Mar 2025, 09:58 | 7.2 | 7.2 °C |
| 14 Feb 2025, 08:37 | 5.3 | 5.3 °C |
| 29 Jan 2025, 09:20 | 5.9 | 5.9 °C |
| 4 Dec 2024, 11:38 | 6.8 | 6.8 °C |
| 20 Nov 2024, 10:20 | 6.1 | 6.1 °C |
| 22 Oct 2024, 09:44 | 11.6 | 11.6 °C |
| 24 Sep 2024, 09:18 | 15.4 | 15.4 °C |
| 25 Jul 2024, 12:38 | 18.4 | 18.4 °C |
| 20 Jun 2024, 09:48 | 17.6 | 17.6 °C |
| 13 May 2024, 10:24 | 16.2 | 16.2 °C |
| 19 Apr 2024, 09:58 | 11.4 | 11.4 °C |
| 22 Mar 2024, 09:17 | 11.8 | 11.8 °C |
| 21 Feb 2024, 10:09 | 9.6 | 9.6 °C |
| 16 Jan 2024, 13:53 | 3.3 | 3.3 °C |
| 6 Dec 2023, 12:34 | 5.5 | 5.5 °C |
| 20 Nov 2023, 09:38 | 10.3 | 10.3 °C |
| 17 Oct 2023, 11:21 | 10.9 | 10.9 °C |
pH
code 0061
8.43
Sampled 22 Jul 2026, 2 months ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | 8.43 | 8.43 |
| 26 Jun 2026, 09:59 | 8.46 | 8.46 |
| 18 May 2026, 09:43 | 8.29 | 8.29 |
| 17 Apr 2026, 10:21 | 8.28 | 8.28 |
| 25 Mar 2026, 09:11 | 8.18 | 8.18 |
| 3 Feb 2026, 12:59 | 8.11 | 8.11 |
| 20 Jan 2026, 09:17 | 8.14 | 8.14 |
| 16 Dec 2025, 09:03 | 8.07 | 8.07 |
| 28 Nov 2025, 09:12 | 7.98 | 7.98 |
| 30 Oct 2025, 09:42 | 8.06 | 8.06 |
| 18 Sep 2025, 10:48 | 7.97 | 7.97 |
| 8 Aug 2025, 08:59 | 8.5 | 8.5 |
| 30 Jul 2025, 09:58 | 8.15 | 8.15 |
| 3 Jun 2025, 11:22 | 8.37 | 8.37 |
| 10 Apr 2025, 09:04 | 8.41 | 8.41 |
| 6 Mar 2025, 09:58 | 8.14 | 8.14 |
| 14 Feb 2025, 08:37 | 8.17 | 8.17 |
| 29 Jan 2025, 09:20 | 8.02 | 8.02 |
| 4 Dec 2024, 11:38 | 7.91 | 7.91 |
| 20 Nov 2024, 10:20 | 8.23 | 8.23 |
| 22 Oct 2024, 09:44 | 7.79 | 7.79 |
| 24 Sep 2024, 09:18 | 7.88 | 7.88 |
| 25 Jul 2024, 12:38 | 8.15 | 8.15 |
| 20 Jun 2024, 09:48 | 8.28 | 8.28 |
| 13 May 2024, 10:24 | 8.15 | 8.15 |
| 19 Apr 2024, 09:58 | 7.9 | 7.9 |
| 8 Apr 2024, 10:38 | 8.18 | 8.18 |
| 22 Mar 2024, 09:17 | 8.02 | 8.02 |
| 21 Feb 2024, 10:09 | 7.96 | 7.96 |
| 16 Jan 2024, 13:53 | 8.44 | 8.44 |
| 6 Dec 2023, 12:34 | 7.97 | 7.97 |
| 20 Nov 2023, 09:38 | 7.73 | 7.73 |
| 17 Oct 2023, 11:21 | 8.02 | 8.02 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 22 Jul 2026, 2 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jun 2026, 09:59 | 0.034 | 0.034 mg/l |
| 18 May 2026, 09:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2026, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Mar 2026, 09:11 | 0.033 | 0.033 mg/l |
| 3 Feb 2026, 12:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jan 2026, 09:17 | 0.044 | 0.044 mg/l |
| 16 Dec 2025, 09:03 | 0.048 | 0.048 mg/l |
| 28 Nov 2025, 09:12 | 0.055 | 0.055 mg/l |
| 30 Oct 2025, 09:42 | 0.036 | 0.036 mg/l |
| 10 Apr 2025, 09:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2025, 09:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Feb 2025, 08:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Jan 2025, 09:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Dec 2024, 11:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Nov 2024, 10:20 | 0.037 | 0.037 mg/l |
| 22 Oct 2024, 09:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Sep 2024, 09:18 | 0.051 | 0.051 mg/l |
| 25 Jul 2024, 12:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jun 2024, 09:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2024, 10:24 | 0.049 | 0.049 mg/l |
| 19 Apr 2024, 09:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Mar 2024, 09:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Feb 2024, 10:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jan 2024, 13:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Dec 2023, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Nov 2023, 09:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Oct 2023, 11:21 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.68 mg/l
Sampled 22 Jul 2026, 2 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | 4.68 | 4.68 mg/l |
| 26 Jun 2026, 09:59 | 5.27 | 5.27 mg/l |
| 18 May 2026, 09:43 | 6.57 | 6.57 mg/l |
| 17 Apr 2026, 10:21 | 6.48 | 6.48 mg/l |
| 25 Mar 2026, 09:11 | 6.58 | 6.58 mg/l |
| 3 Feb 2026, 12:59 | 5.29 | 5.29 mg/l |
| 20 Jan 2026, 09:17 | 5.68 | 5.68 mg/l |
| 16 Dec 2025, 09:03 | 5.87 | 5.87 mg/l |
| 28 Nov 2025, 09:12 | 5.56 | 5.56 mg/l |
| 30 Oct 2025, 09:42 | 5.68 | 5.68 mg/l |
| 10 Apr 2025, 09:04 | 6.78 | 6.78 mg/l |
| 6 Mar 2025, 09:58 | 6.29 | 6.29 mg/l |
| 14 Feb 2025, 08:37 | 6.39 | 6.39 mg/l |
| 29 Jan 2025, 09:20 | 3.79 | 3.79 mg/l |
| 4 Dec 2024, 11:38 | 5.38 | 5.38 mg/l |
| 20 Nov 2024, 10:20 | 5.87 | 5.87 mg/l |
| 22 Oct 2024, 09:44 | 3.48 | 3.48 mg/l |
| 24 Sep 2024, 09:18 | 4.78 | 4.78 mg/l |
| 25 Jul 2024, 12:38 | 5.57 | 5.57 mg/l |
| 20 Jun 2024, 09:48 | 5.78 | 5.78 mg/l |
| 13 May 2024, 10:24 | 6.17 | 6.17 mg/l |
| 19 Apr 2024, 09:58 | 5.37 | 5.37 mg/l |
| 22 Mar 2024, 09:17 | 5.57 | 5.57 mg/l |
| 21 Feb 2024, 10:09 | 3.59 | 3.59 mg/l |
| 16 Jan 2024, 13:53 | 6.09 | 6.09 mg/l |
| 6 Dec 2023, 12:34 | 4.47 | 4.47 mg/l |
| 20 Nov 2023, 09:38 | 4.48 | 4.48 mg/l |
| 17 Oct 2023, 11:21 | 4.98 | 4.98 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.03 mg/l
Sampled 22 Jul 2026, 2 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | 0.03 | 0.03 mg/l |
| 26 Jun 2026, 09:59 | 0.047 | 0.047 mg/l |
| 18 May 2026, 09:43 | 0.027 | 0.027 mg/l |
| 17 Apr 2026, 10:21 | 0.044 | 0.044 mg/l |
| 25 Mar 2026, 09:11 | 0.059 | 0.059 mg/l |
| 3 Feb 2026, 12:59 | 0.071 | 0.071 mg/l |
| 20 Jan 2026, 09:17 | 0.087 | 0.087 mg/l |
| 16 Dec 2025, 09:03 | 0.08 | 0.08 mg/l |
| 28 Nov 2025, 09:12 | 0.079 | 0.079 mg/l |
| 30 Oct 2025, 09:42 | 0.08 | 0.08 mg/l |
| 10 Apr 2025, 09:04 | 0.018 | 0.018 mg/l |
| 6 Mar 2025, 09:58 | 0.026 | 0.026 mg/l |
| 14 Feb 2025, 08:37 | 0.055 | 0.055 mg/l |
| 29 Jan 2025, 09:20 | 0.076 | 0.076 mg/l |
| 20 Nov 2024, 10:20 | 0.085 | 0.085 mg/l |
| 22 Oct 2024, 09:44 | 0.091 | 0.091 mg/l |
| 24 Sep 2024, 09:18 | 0.071 | 0.071 mg/l |
| 25 Jul 2024, 12:38 | 0.074 | 0.074 mg/l |
| 20 Jun 2024, 09:48 | 0.045 | 0.045 mg/l |
| 13 May 2024, 10:24 | 0.053 | 0.053 mg/l |
| 19 Apr 2024, 09:58 | 0.028 | 0.028 mg/l |
| 22 Mar 2024, 09:17 | 0.038 | 0.038 mg/l |
| 21 Feb 2024, 10:09 | 0.062 | 0.062 mg/l |
| 16 Jan 2024, 13:53 | 0.043 | 0.043 mg/l |
| 6 Dec 2023, 12:34 | 0.071 | 0.071 mg/l |
| 20 Nov 2023, 09:38 | 0.062 | 0.062 mg/l |
| 17 Oct 2023, 11:21 | 0.09 | 0.09 mg/l |
Turbidity
code 6396 · NTU
below 1 NTU (not detected above this)
Sampled 22 Jul 2026, 2 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | <1 | below 1 NTU (not detected above this) |
| 26 Jun 2026, 09:59 | 1.3 | 1.3 NTU |
| 18 May 2026, 09:43 | 1.3 | 1.3 NTU |
| 17 Apr 2026, 10:21 | 3.6 | 3.6 NTU |
| 25 Mar 2026, 09:11 | 3.6 | 3.6 NTU |
| 3 Feb 2026, 12:59 | 1.6 | 1.6 NTU |
| 20 Jan 2026, 09:17 | 5.7 | 5.7 NTU |
| 16 Dec 2025, 09:03 | 5.9 | 5.9 NTU |
| 28 Nov 2025, 09:12 | 4 | 4 NTU |
| 30 Oct 2025, 09:42 | 5.6 | 5.6 NTU |
| 10 Apr 2025, 09:04 | 5.7 | 5.7 NTU |
| 22 Mar 2024, 09:17 | 2.1 | 2.1 NTU |
| 21 Feb 2024, 10:09 | 5.9 | 5.9 NTU |
| 16 Jan 2024, 13:53 | 1.1 | 1.1 NTU |
| 6 Dec 2023, 12:34 | 5.2 | 5.2 NTU |
| 20 Nov 2023, 09:38 | 1.6 | 1.6 NTU |
| 17 Oct 2023, 11:21 | 4.6 | 4.6 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
511 µS/cm
Sampled 22 Jul 2026, 2 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 12:26 | 511 | 511 µS/cm |
| 26 Jun 2026, 09:59 | 527 | 527 µS/cm |
| 18 May 2026, 09:43 | 533 | 533 µS/cm |
| 17 Apr 2026, 10:21 | 538 | 538 µS/cm |
| 25 Mar 2026, 09:11 | 555 | 555 µS/cm |
| 3 Feb 2026, 12:59 | 499 | 499 µS/cm |
| 20 Jan 2026, 09:17 | 511 | 511 µS/cm |
| 16 Dec 2025, 09:03 | 540 | 540 µS/cm |
| 28 Nov 2025, 09:12 | 523 | 523 µS/cm |
| 30 Oct 2025, 09:42 | 529 | 529 µS/cm |
| 18 Sep 2025, 10:48 | 531 | 531 µS/cm |
| 8 Aug 2025, 08:59 | 645 | 645 µS/cm |
| 30 Jul 2025, 09:58 | 527 | 527 µS/cm |
| 3 Jun 2025, 11:22 | 541 | 541 µS/cm |
| 10 Apr 2025, 09:04 | 525 | 525 µS/cm |
| 6 Mar 2025, 09:58 | 538 | 538 µS/cm |
| 14 Feb 2025, 08:37 | 552 | 552 µS/cm |
| 29 Jan 2025, 09:20 | 404 | 404 µS/cm |
| 4 Dec 2024, 11:38 | 543 | 543 µS/cm |
| 20 Nov 2024, 10:20 | 526 | 526 µS/cm |
| 22 Oct 2024, 09:44 | 469 | 469 µS/cm |
| 24 Sep 2024, 09:18 | 500 | 500 µS/cm |
| 25 Jul 2024, 12:38 | 532 | 532 µS/cm |
| 20 Jun 2024, 09:48 | 536 | 536 µS/cm |
| 13 May 2024, 10:24 | 558 | 558 µS/cm |
| 19 Apr 2024, 09:58 | 539 | 539 µS/cm |
| 22 Mar 2024, 09:17 | 544 | 544 µS/cm |
| 21 Feb 2024, 10:09 | 453 | 453 µS/cm |
| 16 Jan 2024, 13:53 | 569 | 569 µS/cm |
| 6 Dec 2023, 12:34 | 469 | 469 µS/cm |
| 20 Nov 2023, 09:38 | 510 | 510 µS/cm |
| 17 Oct 2023, 11:21 | 524 | 524 µS/cm |
Everything measured here
336 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.
Show all 336 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 32 | Oct 2023 – Jul 2026 | 115.1% 22 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 32 | Oct 2023 – Jul 2026 | 10 mg/l 22 Jul 2026 |
| Temperature of Water 0076 | River water | 32 | Oct 2023 – Jul 2026 | 22.1 °C 22 Jul 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Jul 2026 | 8.43 22 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Oct 2023 – Jul 2026 | below 0.03 mg/l 22 Jul 2026 |
| Nitrate as N 0117 | River water | 28 | Oct 2023 – Jul 2026 | 4.68 mg/l 22 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Oct 2023 – Jul 2026 | 0.03 mg/l 22 Jul 2026 |
| Turbidity 6396 | River water | 17 | Oct 2023 – Jul 2026 | below 1 NTU 22 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 32 | Oct 2023 – Jul 2026 | 511 µS/cm 22 Jul 2026 |
| 1,1,1,2-Tetrachloroethane 6534 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,1,1-Trichloroethane 3268 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,1,2,2-Tetrachloroethane 7531 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,1,2-Trichloroethane 9811 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,1-Dichloroethane 3269 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,1-Dichloroethylene :- {1,1-Dichloroethene} 9836 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,1-Dichloropropylene :- {1,1-Dichloropropene} 9684 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2,3-Trichlorobenzene 9050 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| 1,2,3-Trichloropropane 6541 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2,3-Trimethylbenzene 9457 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2,4-Trichlorobenzene 9051 | River water | 21 | Feb 2024 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2,4-Trimethylbenzene 9456 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2-Dibromo-3-chloropropane 6537 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2-Dibromoethane 9145 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2-Dichlorobenzene 9618 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2-Dichloroethane 3272 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2-Dichloropropane 6540 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,2-Dimethylbenzene :- {o-Xylene} 9845 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,3,5-Trichlorobenzene 9052 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| 1,3,5-Trimethylbenzene :- {Mesitylene} 9458 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,3-Dichlorobenzene 9619 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,3-Dichloropropane 6542 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 1,4-Dichlorobenzene 4049 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| 2,2,3,4,4,5,6-Heptabromodiphenyl ether :- {PBDE 183} 9005 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00006 µg/l 22 Jul 2026 |
| 2,2,3,4,4,5-Hexabromodiphenyl ether :- {PBDE 138} 9007 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00009 µg/l 22 Jul 2026 |
| 2,2,3,4,4-Pentabromodiphenyl ether :- {PBDE 85} 9009 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00006 µg/l 22 Jul 2026 |
| 2,2,4,4,5,5-Hexabromodiphenyl ether :- {PBDE 153} 9011 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00006 µg/l 22 Jul 2026 |
| 2,2,4,4,5,6-Hexabromodiphenyl ether :- {PBDE 154} 9013 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00006 µg/l 22 Jul 2026 |
| 2,2,4,4,5-Pentabromodiphenyl ether :- {PBDE 99} 9015 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00006 µg/l 22 Jul 2026 |
| 2,2,4,4,6-Pentabromodiphenyl ether :- {PBDE 100} 9017 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00006 µg/l 22 Jul 2026 |
| 2,2,4,4-Tetrabromodiphenyl ether :- {PBDE 47} 9019 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00006 µg/l 22 Jul 2026 |
| 2,2-Dichloropropane 6744 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 2,3,4,4-Tetrabromodiphenyl ether :- {PBDE 66} 9021 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00007 µg/l 22 Jul 2026 |
| 2,3,6-TBA :- {2,3,6-Trichlorobenzoic acid} 7726 | River water | 8 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,3-Dichlorophenol 9453 | River water | 29 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,3-Dimethylphenol :- {2,3-Xylenol} 9451 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,4,4-TriBromoDiphenylEther 4621 | River water | 25 | Apr 2024 – Jul 2026 | below 0.00006 µg/l 22 Jul 2026 |
| 2,4,5-T :- {2,4,5-Trichlorophenoxyacetic acid} 3546 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| 2,4,5-Trichlorophenol 9818 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,4,6-Trichlorophenol 9819 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,4-D :- {2,4-Dichlorophenoxyacetic acid} 3545 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| 2,4-DB :- {4-(2,4-dichlorophenoxy)butyric acid} 3791 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| 2,4-Dichlorophenol 9816 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,4-Dimethylphenol :- {2,4-Xylenol} 3343 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,5-Dichlorophenol 9091 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,5-Dimethylphenol :- {2,5-Xylenol} 9094 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,6-Dichlorophenol 9817 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2,6-Dimethylphenol :- {2,6-Xylenol} 6569 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 13 | Oct 2023 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 14 | Oct 2023 – Feb 2025 | below 0.002 µg/l 14 Feb 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| 2-Chlorophenol 9814 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2-Chlorotoluene :- {1-Chloro-2-methylbenzene} 6547 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 2-Ethyl phenol 9454 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2-Methylphenol :- {o-Cresol} 5562 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 2-Phenoxypropionic acid :- {PPA} 6673 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| 3,4-Dimethylphenol :- {3,4-Xylenol} 6577 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 3,5-Dimethylphenol :- {3,5-Xylenol} 5558 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 3-Chlorophenol 9703 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 3-Chlorotoluene :- {3-Chloromethylbenzene} 5568 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 3-Methylphenol :- {m-Cresol} 5561 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 13 | Oct 2023 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 14 | Oct 2023 – Feb 2025 | below 0.004 µg/l 14 Feb 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 14 | Oct 2023 – Feb 2025 | below 0.005 µg/l 14 Feb 2025 |
| 4-Chloro-2-methylphenol :- {p-Chloro-o-cresol} 3341 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 4-Chloro-3,5-dimethylphenol :- {PCMX} 6584 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 4-Chloro-3-methylphenol :- {p-Chloro-m-cresol} 3342 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 4-Chlorophenol 9815 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 4-Chlorophenoxyacetic acid 3547 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| 4-Chlorotoluene :- {1-Chloro-4-methylbenzene} 6578 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 4-Isopropyltoluene :- {4-methyl-Isopropylbenzene} 6579 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| 4-Methylphenol :- {p-Cresol} 5560 | River water | 30 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| 4-Nonylphenol Branched 9190 | River water | 23 | Apr 2024 – Jul 2026 | below 0.04 µg/l 22 Jul 2026 |
| 4-Phenoxybutyric acid :- {PBA} 6672 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| 4-tert-Octylphenol :- {p-tert-Octylphenol} 9267 | River water | 23 | Apr 2024 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Acenaphthene 7395 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Acenaphthylene 8311 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Aclonifen 3478 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Alachlor 7086 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Aldicarb 9344 | River water | 18 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Aldicarb sulfoxide 8806 | River water | 18 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Aldoxycarb :- {Aldicarb Sulfone} 8807 | River water | 17 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Aldrin 0483 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Oct 2023 – Jul 2026 | 200 mg/l 22 Jul 2026 |
| Aluminium, Dissolved 6037 | River water | 30 | Oct 2023 – Jun 2026 | below 20 µg/l 26 Jun 2026 |
| Aminomethylphosphonic acid 7125 | River water | 10 | Apr 2024 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Oct 2023 – Jul 2026 | below 0.00131 mg/l 22 Jul 2026 |
| Anthracene 6753 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Arsenic, Dissolved 6045 | River water | 24 | Oct 2023 – Jul 2026 | below 1 µg/l 22 Jul 2026 |
| Asulam 3004 | River water | 18 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| Atrazine 3002 | River water | 15 | Oct 2023 – Jul 2026 | 0.0022 µg/l 22 Jul 2026 |
| Azoxystrobin 5050 | River water | 18 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| Barium, Dissolved 9446 | River water | 30 | Oct 2023 – Jun 2026 | 15 µg/l 26 Jun 2026 |
| Benazolin 3792 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Bentazone 4065 | River water | 8 | Oct 2023 – Jul 2026 | below 0.003 µg/l 22 Jul 2026 |
| Benzene 3781 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Benzo(a)Anthracene 0772 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Benzo(a)Pyrene 6399 | River water | 17 | Oct 2023 – Jun 2026 | 0.00043 µg/l 26 Jun 2026 |
| Benzo(b)Fluoranthene 0731 | River water | 17 | Oct 2023 – Jun 2026 | 0.00059 µg/l 26 Jun 2026 |
| Benzo(e)Pyrene 8940 | River water | 11 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Benzo(g,h,i)Perylene 0714 | River water | 17 | Oct 2023 – Jun 2026 | 0.00053 µg/l 26 Jun 2026 |
| Benzo(k)Fluoranthene 0733 | River water | 17 | Oct 2023 – Jun 2026 | 0.00025 µg/l 26 Jun 2026 |
| Benzyl butyl phthalate 8162 | River water | 7 | Jan 2024 – Jul 2026 | below 1 µg/l 22 Jul 2026 |
| Bifenox 6603 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| BOD : 5 Day ATU 0085 | River water | 18 | Feb 2024 – May 2026 | 1.3 mg/l 18 May 2026 |
| Boron, Dissolved 9447 | River water | 31 | Oct 2023 – Jun 2026 | below 100 µg/l 26 Jun 2026 |
| Bromobenzene 6604 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Bromochloromethane 6605 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Bromodichloromethane 3282 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Bromoform :- {Tribromomethane} 3283 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Bromoxynil 6449 | River water | 6 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Cadmium 0108 | River water | 31 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Cadmium, Dissolved 0106 | River water | 31 | Oct 2023 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Calcium, Dissolved 0239 | River water | 30 | Oct 2023 – Jun 2026 | 91 mg/l 26 Jun 2026 |
| Carbaryl 9343 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Carbendazim 3475 | River water | 17 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Carbetamide 9073 | River water | 17 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Carbofuran 3086 | River water | 18 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Carbon Disulphide 8847 | River water | 23 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Carbon tetrachloride :- {Tetrachloromethane} 1049 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 27 | Oct 2023 – Jul 2026 | 2.8 mg/l 22 Jul 2026 |
| Chlorfenvinphos 0503 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Chloridazon 6760 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Chloride 0172 | River water | 17 | Oct 2023 – Jul 2026 | 24 mg/l 22 Jul 2026 |
| Chlorobenzene 3290 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Chlorodibromomethane 3292 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Chloroform :- {Trichloromethane} 3373 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Chloromethane :- {Methyl Chloride} 6376 | River water | 23 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 16 | Oct 2023 – Jul 2026 | 3.2 µg/l 22 Jul 2026 |
| Chlorothalonil 6615 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0006 µg/l 22 Jul 2026 |
| Chlorotoluron 9348 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Chloroxuron 3399 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Chlorpyrifos-ethyl 9978 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Chromium Hexavalent, Dissolved :- {Cr VI} 6619 | River water | 7 | Oct 2023 – Jul 2026 | below 0.05 µg/l 22 Jul 2026 |
| Chromium, Dissolved 3409 | River water | 31 | Oct 2023 – Jun 2026 | below 0.5 µg/l 26 Jun 2026 |
| Chrysene 8310 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene} 6538 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| cis-1,3-Dichloropropylene :- {cis-1,3-Dichloropropene} 6543 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| cis-Heptachlor epoxide 8864 | River water | 15 | Oct 2023 – Jul 2026 | below 0.00005 µg/l 22 Jul 2026 |
| cis-Permethrin 9341 | River water | 14 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Clopyralid 6620 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Copper 6452 | River water | 31 | Oct 2023 – Jul 2026 | 0.89 µg/l 22 Jul 2026 |
| Copper : BLM Bioavailable 4821 | River water | 25 | Oct 2023 – Jun 2026 | 0.31 µg/l 26 Jun 2026 |
| Copper, Dissolved 6450 | River water | 31 | Oct 2023 – Jun 2026 | 0.86 µg/l 26 Jun 2026 |
| Cyanide : Free as CN 0174 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 mg/l 22 Jul 2026 |
| Cypermethrin 0073 | River water | 16 | Oct 2023 – Jul 2026 | below 0.00001 µg/l 22 Jul 2026 |
| Cypermethrin Identification 5446 | River water | 16 | Oct 2023 – Jul 2026 | 1 text result 22 Jul 2026 |
| DDE -pp 0551 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| DDT -op 0539 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| DDT -pp 0555 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| DDT : Sum of components 0575 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0004 µg/l 22 Jul 2026 |
| Di(2-ethylhexyl) phthalate :- {DEHP} 6724 | River water | 25 | Apr 2024 – Jul 2026 | below 0.2 µg/l 22 Jul 2026 |
| Diazinon 0723 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Dibenzo(a,h)Anthracene 8360 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Dibromomethane 3783 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Dicamba 3550 | River water | 8 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Dichlorobenzophenone 3472 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Dichloromethane :- {Methylene Dichloride} 3299 | River water | 22 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Dichlorprop :- {2,4-DP} 3551 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Dichlorvos 0507 | River water | 15 | Oct 2023 – Jul 2026 | below 0.00005 µg/l 22 Jul 2026 |
| Dieldrin 0511 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Diflurobenzuron 9345 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Dimethoate 6447 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Dimethylbenzene : Sum of isomers (1,3- 1,4-) 6716 | River water | 24 | Oct 2023 – Jul 2026 | below 0.2 µg/l 22 Jul 2026 |
| Diuron 3811 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Endosulfan : Total (A + B) 1109 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0002 µg/l 22 Jul 2026 |
| Endosulfan A 0569 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Endosulfan B 0570 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Endrin 0562 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Ethiofencarb 6955 | River water | 18 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Ethirimol 5047 | River water | 18 | Oct 2023 – Jul 2026 | below 0.05 µg/l 22 Jul 2026 |
| Ethyl tert-butyl ether :- {ETBE} 9844 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Ethylbenzene 4117 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Fenitrothion 9716 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Fenoprop 3552 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Fenuron 9339 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Fluoranthene 0736 | River water | 17 | Oct 2023 – Jun 2026 | 0.0015 µg/l 26 Jun 2026 |
| Fluorene 7864 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Fluroxypyr 4064 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 4 | Apr 2026 – Jul 2026 | 1 text result 22 Jul 2026 |
| Glyphosate 3007 | River water | 10 | Apr 2024 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| HCH -alpha 0487 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| HCH -beta 0491 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| HCH -delta 0495 | River water | 14 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| HCH -gamma :- {Lindane} 0499 | River water | 27 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Heptachlor 0527 | River water | 15 | Oct 2023 – Jul 2026 | below 0.00005 µg/l 22 Jul 2026 |
| Hexabromocyclododecane Total: (Sum of a, b, g) 9248 | River water | 30 | Oct 2023 – Jul 2026 | below 0.0002 µg/l 22 Jul 2026 |
| Hexachlorobenzene 0576 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Hexachlorobutadiene 6648 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Hexachloroethane 5234 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| Imazapyr 7025 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 17 | Oct 2023 – Jun 2026 | 0.00046 µg/l 26 Jun 2026 |
| Ioxynil 9068 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Irgarol 1051 8999 | River water | 14 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Iron, Dissolved 6460 | River water | 31 | Oct 2023 – Jun 2026 | 52 µg/l 26 Jun 2026 |
| Isodrin 9494 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Isopropylbenzene :- {Methylethylbenzene} 7574 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Isoproturon 3117 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| LCMS Screen : Semi Quantitative 7299 | River water | 2 | Apr 2026 – Jul 2026 | 1 text result 22 Jul 2026 |
| Lead 0050 | River water | 31 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Lead : BLM Bioavailable 3377 | River water | 25 | Oct 2023 – Jun 2026 | 0.02 µg/l 26 Jun 2026 |
| Lead, Dissolved 0052 | River water | 31 | Oct 2023 – Jun 2026 | below 0.1 µg/l 26 Jun 2026 |
| Linuron 3118 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Lithium, Dissolved 4201 | River water | 30 | Oct 2023 – Jun 2026 | below 100 µg/l 26 Jun 2026 |
| Magnesium, Dissolved 0235 | River water | 30 | Oct 2023 – Jun 2026 | 2.3 mg/l 26 Jun 2026 |
| Malathion 0535 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 25 | Oct 2023 – Jun 2026 | 5 µg/l 26 Jun 2026 |
| Manganese, Dissolved 6458 | River water | 31 | Oct 2023 – Jun 2026 | below 10 µg/l 26 Jun 2026 |
| MCPA :- {4-Chloro-2-methylphenoxyacetic acid} 3548 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| MCPB :- {4-Chloro-2-methylphenoxybutyric acid} 3790 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Mecoprop 3549 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Mercury 0105 | River water | 32 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Mercury, Dissolved 0103 | River water | 32 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Methabenzthiazuron 7053 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Methiocarb 6971 | River water | 18 | Oct 2023 – Jul 2026 | below 0.001 µg/l 22 Jul 2026 |
| Methomyl 6972 | River water | 17 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Metoxuron 3130 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Metsulfuron-methyl 9861 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Monolinuron 3925 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Monuron 3400 | River water | 17 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| MTBE :- {Methyl tert-butyl ether} 6656 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| n-ButylBenzene :- {1-Phenylbutane} 6658 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 14 | Oct 2023 – Feb 2025 | below 0.002 µg/l 14 Feb 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 14 | Oct 2023 – Feb 2025 | below 0.002 µg/l 14 Feb 2025 |
| n-Propylbenzene :- {1-Phenylpropane} 6659 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Naphthalene 9669 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Neburon 9756 | River water | 18 | Oct 2023 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Nickel 6462 | River water | 27 | Feb 2024 – Jul 2026 | 0.97 µg/l 22 Jul 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 25 | Oct 2023 – Jun 2026 | 0.96 µg/l 26 Jun 2026 |
| Nickel, Dissolved 3410 | River water | 31 | Oct 2023 – Jun 2026 | 0.96 µg/l 26 Jun 2026 |
| Nitrite as N 0118 | River water | 28 | Oct 2023 – Jul 2026 | 0.018 mg/l 22 Jul 2026 |
| Nitrogen, Total as N 9686 | River water | 26 | Oct 2023 – Jul 2026 | 5 mg/l 22 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 28 | Oct 2023 – Jul 2026 | 4.7 mg/l 22 Jul 2026 |
| Oxamyl 6980 | River water | 18 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| PCB - 028 9768 | River water | 27 | Oct 2023 – Jul 2026 | below 0.001 µg/l 22 Jul 2026 |
| PCB - 052 9769 | River water | 27 | Oct 2023 – Jul 2026 | below 0.001 µg/l 22 Jul 2026 |
| PCB - 101 9770 | River water | 27 | Oct 2023 – Jul 2026 | below 0.001 µg/l 22 Jul 2026 |
| PCB - 118 9771 | River water | 28 | Oct 2023 – Jul 2026 | below 0.001 µg/l 22 Jul 2026 |
| PCB - 138 9772 | River water | 28 | Oct 2023 – Jul 2026 | below 0.001 µg/l 22 Jul 2026 |
| PCB - 153 9773 | River water | 28 | Oct 2023 – Jul 2026 | below 0.001 µg/l 22 Jul 2026 |
| PCB - 180 9774 | River water | 28 | Oct 2023 – Jul 2026 | below 0.002 µg/l 22 Jul 2026 |
| PCB : Total 0753 | River water | 27 | Oct 2023 – Jul 2026 | below 0.008 µg/l 22 Jul 2026 |
| Pendimethalin 9892 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0006 µg/l 22 Jul 2026 |
| Pentachlorobenzene 5863 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Pentachlorophenol 1085 | River water | 29 | Oct 2023 – Jul 2026 | below 0.02 µg/l 22 Jul 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 13 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| Perfluorobutanoic acid 2995 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 14 | Oct 2023 – Feb 2025 | below 0.002 µg/l 14 Feb 2025 |
| Perfluorodecanoic acid 8892 | River water | 14 | Oct 2023 – Feb 2025 | below 0.002 µg/l 14 Feb 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 14 | Oct 2023 – Feb 2025 | below 0.005 µg/l 14 Feb 2025 |
| Perfluorododecanoic acid 8894 | River water | 14 | Oct 2023 – Feb 2025 | below 0.002 µg/l 14 Feb 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluoroheptanoic acid 8889 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 13 | Oct 2023 – Feb 2025 | 0.00069 µg/l 14 Feb 2025 |
| Perfluorohexanoic acid 8888 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorononanoic acid 8891 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 14 | Oct 2023 – Feb 2025 | below 0.002 µg/l 14 Feb 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 13 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 13 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorooctanoate anion 9274 | River water | 16 | Oct 2023 – Jun 2026 | 0.00061 µg/l 26 Jun 2026 |
| Perfluorooctanoic acid 8890 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluorooctylsulphonate anion 9276 | River water | 16 | Oct 2023 – Jun 2026 | 0.0017 µg/l 26 Jun 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 14 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 14 Feb 2025 |
| Perfluoropentanoic acid 8887 | River water | 13 | Oct 2023 – Feb 2025 | below 0.001 µg/l 14 Feb 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 14 | Oct 2023 – Feb 2025 | below 0.006 µg/l 14 Feb 2025 |
| Perfluorotridecanoic acid 2955 | River water | 14 | Oct 2023 – Feb 2025 | below 0.005 µg/l 14 Feb 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 14 | Oct 2023 – Feb 2025 | below 0.004 µg/l 14 Feb 2025 |
| Perfluoroundecanoic acid 8893 | River water | 14 | Oct 2023 – Feb 2025 | below 0.002 µg/l 14 Feb 2025 |
| Perylene 9003 | River water | 11 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Phenanthrene 9671 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Phenol 9522 | River water | 30 | Oct 2023 – Jul 2026 | below 0.05 µg/l 22 Jul 2026 |
| Phenoxyacetic acid :- {PAA} 6671 | River water | 8 | Oct 2023 – Jul 2026 | 0.017 µg/l 22 Jul 2026 |
| Phosphorus, Total as P 0348 | River water | 26 | Oct 2023 – Jul 2026 | 0.047 mg/l 22 Jul 2026 |
| Picloram 9883 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Potassium, Dissolved 0209 | River water | 31 | Oct 2023 – Jun 2026 | 1.9 mg/l 26 Jun 2026 |
| Propoxur 6987 | River water | 18 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Pyrene 7325 | River water | 12 | Feb 2024 – Jun 2026 | below 0.01 µg/l 26 Jun 2026 |
| Quinoxyfen 5157 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| sec-Butylbenzene :- {1-Methylpropylbenzene} 6690 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Selenium, Dissolved 6047 | River water | 8 | Oct 2023 – Jul 2026 | below 1 µg/l 22 Jul 2026 |
| Silica, reactive as SiO2 0182 | River water | 17 | Oct 2023 – Jul 2026 | 5.9 mg/l 22 Jul 2026 |
| Simazine 3001 | River water | 15 | Oct 2023 – Jul 2026 | 0.0015 µg/l 22 Jul 2026 |
| Sodium, Dissolved 0205 | River water | 31 | Oct 2023 – Jun 2026 | 12 mg/l 26 Jun 2026 |
| Solids, Suspended at 105 C 0135 | River water | 28 | Oct 2023 – Jul 2026 | below 3 mg/l 22 Jul 2026 |
| Strontium, Filtered 6693 | River water | 30 | Oct 2023 – Jun 2026 | 260 µg/l 26 Jun 2026 |
| Styrene :- {Vinylbenzene} 9888 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Sulcotrione 5042 | River water | 18 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 31 | Oct 2023 – Jun 2026 | 24 mg/l 26 Jun 2026 |
| TDE -pp 0559 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Terbutryn 3009 | River water | 14 | Oct 2023 – Jul 2026 | 0.00074 µg/l 22 Jul 2026 |
| tert-Amyl methyl ether :- {TAME} 9839 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| tert-Butylbenzene :- {(1,1-Dimethylethyl)benzene} 6697 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Tetrachloroethylene :- {Perchloroethylene} 3328 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Toluene :- {Methylbenzene} 3784 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene} 6539 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| trans-1,3-Dichloropropylene :- {trans-1,3-Dichloropropene} 6544 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| trans-Heptachlor epoxide 8865 | River water | 15 | Oct 2023 – Jul 2026 | below 0.00005 µg/l 22 Jul 2026 |
| trans-Permethrin 9342 | River water | 11 | Dec 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Tributyl Tin as Cation 8944 | River water | 29 | Oct 2023 – Jul 2026 | below 0.00002 µg/l 22 Jul 2026 |
| Trichloroethylene :- {Trichloroethene} 3334 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Trichlorofluoromethane 6711 | River water | 24 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Triclopyr 3555 | River water | 8 | Oct 2023 – Jul 2026 | below 0.005 µg/l 22 Jul 2026 |
| Triclosan 5889 | River water | 23 | Apr 2024 – Jul 2026 | below 0.01 µg/l 22 Jul 2026 |
| Trifluralin 9989 | River water | 15 | Oct 2023 – Jul 2026 | below 0.0001 µg/l 22 Jul 2026 |
| Triphenyl Tin as Cation 5732 | River water | 29 | Oct 2023 – Jul 2026 | below 0.00002 µg/l 22 Jul 2026 |
| Vinyl chloride :- {Chloroethylene} 6715 | River water | 23 | Oct 2023 – Jul 2026 | below 0.1 µg/l 22 Jul 2026 |
| Zinc 6455 | River water | 31 | Oct 2023 – Jul 2026 | 1.2 µg/l 22 Jul 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 25 | Oct 2023 – Jun 2026 | 0.7 µg/l 26 Jun 2026 |
| Zinc, Dissolved 3408 | River water | 31 | Oct 2023 – Jun 2026 | 1.3 µg/l 26 Jun 2026 |
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.