Shrowl Bridge River Chew
EA name: SHROWL BRIDGE RIVER CHEW
Environment Agency sampling point SW-A4070409 · 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
- 8 Sep 2026, 10:1423 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 57 since 2 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 357839, 156820As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- River ChewPlaced by position alone, on a line whose map name differs from its own, 0 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Why it was sampled
- Monitoring (national agency policy) (50 samples)
Environmental monitoring statutory (EU directives) (6 samples)
Planned investigation (local monitoring) (1 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
78.3%
Sampled 8 Sep 2026, 23 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 10:14 | 78.3 | 78.3% |
| 4 Aug 2026, 10:08 | 71.6 | 71.6% |
| 7 Jul 2026, 10:10 | 83.5 | 83.5% |
| 8 Jun 2026, 10:23 | 86.6 | 86.6% |
| 20 May 2026, 13:38 | 88.9 | 88.9% |
| 11 May 2026, 09:41 | 90 | 90% |
| 8 May 2026, 12:20 | 90.1 | 90.1% |
| 22 Apr 2026, 11:45 | 87.6 | 87.6% |
| 20 Apr 2026, 11:47 | 98.1 | 98.1% |
| 7 Apr 2026, 17:30 | 98.8 | 98.8% |
| 1 Apr 2026, 11:03 | 96.4 | 96.4% |
| 26 Mar 2026, 08:37 | 94.8 | 94.8% |
| 23 Mar 2026, 12:39 | 98.7 | 98.7% |
| 4 Feb 2026, 13:00 | 98.4 | 98.4% |
| 26 Jan 2026, 09:31 | 96.6 | 96.6% |
| 7 Jan 2026, 11:51 | 98 | 98% |
| 6 Mar 2025, 09:55 | 97.2 | 97.2% |
| 5 Feb 2025, 11:08 | 99.7 | 99.7% |
| 22 Jan 2025, 12:25 | 98.3 | 98.3% |
| 6 Dec 2024, 12:13 | 95.8 | 95.8% |
| 19 Nov 2024, 11:17 | 94.1 | 94.1% |
| 17 Oct 2024, 11:56 | 95.3 | 95.3% |
| 16 Sep 2024, 12:08 | 84.2 | 84.2% |
| 20 Aug 2024, 13:04 | 89.6 | 89.6% |
| 23 Jul 2024, 10:46 | 93.4 | 93.4% |
| 19 Jun 2024, 13:50 | 93.8 | 93.8% |
| 13 May 2024, 10:07 | 94.3 | 94.3% |
| 25 Apr 2024, 15:59 | 99.6 | 99.6% |
| 6 Mar 2024, 10:21 | 96.6 | 96.6% |
| 5 Feb 2024, 09:55 | 95.9 | 95.9% |
| 11 Jan 2024, 10:09 | 95.1 | 95.1% |
| 6 Dec 2023, 11:45 | 96.4 | 96.4% |
| 8 Nov 2023, 15:10 | 93.5 | 93.5% |
| 2 Oct 2023, 09:26 | 91.2 | 91.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.32 mg/l
Sampled 20 May 2026, 4 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 13:38 | 9.32 | 9.32 mg/l |
| 8 May 2026, 12:20 | 9.49 | 9.49 mg/l |
| 20 Apr 2026, 11:47 | 10.8 | 10.8 mg/l |
| 1 Apr 2026, 11:03 | 10.7 | 10.7 mg/l |
| 26 Mar 2026, 08:37 | 11.3 | 11.3 mg/l |
| 23 Mar 2026, 12:39 | 10.9 | 10.9 mg/l |
| 4 Feb 2026, 13:00 | 11.5 | 11.5 mg/l |
| 26 Jan 2026, 09:31 | 11.6 | 11.6 mg/l |
| 7 Jan 2026, 11:51 | 12.3 | 12.3 mg/l |
| 6 Mar 2025, 09:55 | 11.6 | 11.6 mg/l |
| 5 Feb 2025, 11:08 | 12 | 12 mg/l |
| 22 Jan 2025, 12:25 | 11.9 | 11.9 mg/l |
| 6 Dec 2024, 12:13 | 11 | 11 mg/l |
| 19 Nov 2024, 11:17 | 10.9 | 10.9 mg/l |
| 17 Oct 2024, 11:56 | 9.99 | 9.99 mg/l |
| 16 Sep 2024, 12:08 | 8.66 | 8.66 mg/l |
| 20 Aug 2024, 13:04 | 8.86 | 8.86 mg/l |
| 23 Jul 2024, 10:46 | 9.1 | 9.1 mg/l |
| 19 Jun 2024, 13:50 | 9.35 | 9.35 mg/l |
| 13 May 2024, 10:07 | 9.51 | 9.51 mg/l |
| 25 Apr 2024, 15:59 | 10.8 | 10.8 mg/l |
| 6 Mar 2024, 10:21 | 11.3 | 11.3 mg/l |
| 5 Feb 2024, 09:55 | 11 | 11 mg/l |
| 11 Jan 2024, 10:09 | 11.6 | 11.6 mg/l |
| 6 Dec 2023, 11:45 | 11.6 | 11.6 mg/l |
| 8 Nov 2023, 15:10 | 10.4 | 10.4 mg/l |
| 2 Oct 2023, 09:26 | 9 | 9 mg/l |
Water temperature
code 0076 · °C
14.8 °C
Sampled 8 Sep 2026, 23 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 10:14 | 14.8 | 14.8 °C |
| 4 Aug 2026, 10:08 | 17.4 | 17.4 °C |
| 7 Jul 2026, 10:10 | 16.3 | 16.3 °C |
| 8 Jun 2026, 10:23 | 13.7 | 13.7 °C |
| 20 May 2026, 13:38 | 13.1 | 13.1 °C |
| 11 May 2026, 09:41 | 10.2 | 10.2 °C |
| 8 May 2026, 12:20 | 12.9 | 12.9 °C |
| 22 Apr 2026, 11:45 | 11.5 | 11.5 °C |
| 20 Apr 2026, 11:47 | 10.9 | 10.9 °C |
| 7 Apr 2026, 17:30 | 12.6 | 12.6 °C |
| 1 Apr 2026, 11:03 | 10.8 | 10.8 °C |
| 26 Mar 2026, 08:37 | 7.8 | 7.8 °C |
| 23 Mar 2026, 12:39 | 10.9 | 10.9 °C |
| 4 Feb 2026, 13:00 | 8.5 | 8.5 °C |
| 26 Jan 2026, 09:31 | 7.4 | 7.4 °C |
| 7 Jan 2026, 11:51 | 5.7 | 5.7 °C |
| 6 Mar 2025, 09:55 | 7.8 | 7.8 °C |
| 5 Feb 2025, 11:08 | 7.2 | 7.2 °C |
| 22 Jan 2025, 12:25 | 7 | 7 °C |
| 6 Dec 2024, 12:13 | 9.3 | 9.3 °C |
| 19 Nov 2024, 11:17 | 8.8 | 8.8 °C |
| 17 Oct 2024, 11:56 | 13.1 | 13.1 °C |
| 16 Sep 2024, 12:08 | 14 | 14 °C |
| 20 Aug 2024, 13:04 | 15.8 | 15.8 °C |
| 23 Jul 2024, 10:46 | 16.5 | 16.5 °C |
| 19 Jun 2024, 13:50 | 15.4 | 15.4 °C |
| 13 May 2024, 10:07 | 14.9 | 14.9 °C |
| 25 Apr 2024, 15:59 | 11.5 | 11.5 °C |
| 6 Mar 2024, 10:21 | 8.4 | 8.4 °C |
| 5 Feb 2024, 09:55 | 9.3 | 9.3 °C |
| 11 Jan 2024, 10:09 | 6.7 | 6.7 °C |
| 6 Dec 2023, 11:45 | 7.4 | 7.4 °C |
| 8 Nov 2023, 15:10 | 10.6 | 10.6 °C |
| 2 Oct 2023, 09:26 | 15.9 | 15.9 °C |
pH
code 0061
8.1
Sampled 8 Sep 2026, 23 days ago · 55 results banked
Every result (55)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 10:14 | 8.1 | 8.1 |
| 4 Aug 2026, 10:08 | 8.1 | 8.1 |
| 7 Jul 2026, 10:10 | 8.2 | 8.2 |
| 8 Jun 2026, 10:23 | 8.2 | 8.2 |
| 20 May 2026, 13:38 | 8.15 | 8.15 |
| 11 May 2026, 09:41 | 8.2 | 8.2 |
| 8 May 2026, 12:20 | 8.16 | 8.16 |
| 22 Apr 2026, 11:45 | 8.2 | 8.2 |
| 20 Apr 2026, 11:47 | 8.23 | 8.23 |
| 1 Apr 2026, 11:03 | 8.19 | 8.19 |
| 26 Mar 2026, 08:37 | 8.23 | 8.23 |
| 23 Mar 2026, 12:39 | 8.2 | 8.2 |
| 17 Mar 2026, 11:22 | 8.23 | 8.23 |
| 24 Feb 2026, 13:18 | 8.14 | 8.14 |
| 4 Feb 2026, 13:00 | 8.14 | 8.14 |
| 26 Jan 2026, 09:31 | 8.15 | 8.15 |
| 7 Jan 2026, 11:51 | 8.14 | 8.14 |
| 30 Dec 2025, 13:13 | 8.09 | 8.09 |
| 19 Nov 2025, 14:04 | 8.02 | 8.02 |
| 22 Oct 2025, 14:21 | 8.13 | 8.13 |
| 23 Sep 2025, 13:22 | 8.18 | 8.18 |
| 28 Aug 2025, 13:59 | 8.14 | 8.14 |
| 15 Jul 2025, 10:24 | 8.03 | 8.03 |
| 26 Jun 2025, 15:16 | 8.04 | 8.04 |
| 7 May 2025, 09:36 | 8.21 | 8.21 |
| 24 Apr 2025, 12:15 | 8.22 | 8.22 |
| 6 Mar 2025, 09:55 | 8.24 | 8.24 |
| 5 Feb 2025, 11:08 | 8.14 | 8.14 |
| 22 Jan 2025, 12:25 | 8.21 | 8.21 |
| 6 Dec 2024, 12:13 | 8.05 | 8.05 |
| 19 Nov 2024, 11:17 | 7.96 | 7.96 |
| 17 Oct 2024, 11:56 | 7.88 | 7.88 |
| 16 Sep 2024, 12:08 | 8.1 | 8.1 |
| 20 Aug 2024, 13:04 | 8.2 | 8.2 |
| 23 Jul 2024, 10:46 | 8.21 | 8.21 |
| 19 Jun 2024, 13:50 | 8.34 | 8.34 |
| 13 May 2024, 10:07 | 8.25 | 8.25 |
| 25 Apr 2024, 15:59 | 8.36 | 8.36 |
| 20 Mar 2024, 10:46 | 8.16 | 8.16 |
| 6 Mar 2024, 10:21 | 8.26 | 8.26 |
| 6 Mar 2024, 10:07 | 8.22 | 8.22 |
| 21 Feb 2024, 10:19 | 8 | 8 |
| 5 Feb 2024, 09:55 | 8.18 | 8.18 |
| 5 Feb 2024, 09:48 | 8.18 | 8.18 |
| 15 Jan 2024, 13:32 | 8.11 | 8.11 |
| 11 Jan 2024, 10:09 | 8.05 | 8.05 |
| 9 Jan 2024, 10:40 | 8.11 | 8.11 |
| 18 Dec 2023, 11:02 | 8.09 | 8.09 |
| 6 Dec 2023, 11:45 | 7.97 | 7.97 |
| 6 Dec 2023, 11:32 | 7.97 | 7.97 |
| 20 Nov 2023, 11:37 | 7.94 | 7.94 |
| 8 Nov 2023, 15:10 | 7.88 | 7.88 |
| 3 Nov 2023, 10:56 | 7.99 | 7.99 |
| 17 Oct 2023, 11:40 | 8.05 | 8.05 |
| 2 Oct 2023, 09:26 | 7.78 | 7.78 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.13 mg/l
Sampled 20 May 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 13:38 | 0.13 | 0.13 mg/l |
| 8 May 2026, 12:20 | 0.29 | 0.29 mg/l |
| 20 Apr 2026, 11:47 | 0.039 | 0.039 mg/l |
| 1 Apr 2026, 11:03 | 0.06 | 0.06 mg/l |
| 26 Mar 2026, 08:37 | 0.36 | 0.36 mg/l |
| 23 Mar 2026, 12:39 | 0.035 | 0.035 mg/l |
| 4 Feb 2026, 13:00 | 0.046 | 0.046 mg/l |
| 26 Jan 2026, 09:31 | 0.071 | 0.071 mg/l |
| 7 Jan 2026, 11:51 | 0.063 | 0.063 mg/l |
| 6 Mar 2025, 09:55 | 0.047 | 0.047 mg/l |
| 5 Feb 2025, 11:08 | 0.04 | 0.04 mg/l |
| 22 Jan 2025, 12:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Nov 2024, 11:17 | 0.066 | 0.066 mg/l |
| 17 Oct 2024, 11:56 | 0.034 | 0.034 mg/l |
| 16 Sep 2024, 12:08 | 0.055 | 0.055 mg/l |
| 20 Aug 2024, 13:04 | 0.056 | 0.056 mg/l |
| 23 Jul 2024, 10:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jun 2024, 13:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2024, 10:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Apr 2024, 15:59 | 0.072 | 0.072 mg/l |
| 6 Mar 2024, 10:21 | 0.049 | 0.049 mg/l |
| 5 Feb 2024, 09:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Jan 2024, 10:09 | 0.069 | 0.069 mg/l |
| 6 Dec 2023, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Nov 2023, 15:10 | 0.033 | 0.033 mg/l |
| 2 Oct 2023, 09:26 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.48 mg/l
Sampled 20 May 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 13:38 | 3.48 | 3.48 mg/l |
| 8 May 2026, 12:20 | 3.58 | 3.58 mg/l |
| 20 Apr 2026, 11:47 | 3.89 | 3.89 mg/l |
| 1 Apr 2026, 11:03 | 3.79 | 3.79 mg/l |
| 26 Mar 2026, 08:37 | 3.89 | 3.89 mg/l |
| 23 Mar 2026, 12:39 | 3.99 | 3.99 mg/l |
| 4 Feb 2026, 13:00 | 4.29 | 4.29 mg/l |
| 26 Jan 2026, 09:31 | 4.89 | 4.89 mg/l |
| 7 Jan 2026, 11:51 | 5.08 | 5.08 mg/l |
| 6 Mar 2025, 09:55 | 3.89 | 3.89 mg/l |
| 5 Feb 2025, 11:08 | 3.99 | 3.99 mg/l |
| 22 Jan 2025, 12:25 | 3.99 | 3.99 mg/l |
| 19 Nov 2024, 11:17 | 3.39 | 3.39 mg/l |
| 17 Oct 2024, 11:56 | 2.98 | 2.98 mg/l |
| 16 Sep 2024, 12:08 | 2.59 | 2.59 mg/l |
| 20 Aug 2024, 13:04 | 2.99 | 2.99 mg/l |
| 23 Jul 2024, 10:46 | 3.29 | 3.29 mg/l |
| 19 Jun 2024, 13:50 | 3.19 | 3.19 mg/l |
| 13 May 2024, 10:07 | 3.49 | 3.49 mg/l |
| 25 Apr 2024, 15:59 | 3.79 | 3.79 mg/l |
| 6 Mar 2024, 10:21 | 4.89 | 4.89 mg/l |
| 5 Feb 2024, 09:55 | 4.19 | 4.19 mg/l |
| 11 Jan 2024, 10:09 | 4.49 | 4.49 mg/l |
| 6 Dec 2023, 11:45 | 4.19 | 4.19 mg/l |
| 8 Nov 2023, 15:10 | 3.88 | 3.88 mg/l |
| 2 Oct 2023, 09:26 | 3.29 | 3.29 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.04 mg/l
Sampled 20 May 2026, 4 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 May 2026, 13:38 | 0.04 | 0.04 mg/l |
| 8 May 2026, 12:20 | 0.043 | 0.043 mg/l |
| 20 Apr 2026, 11:47 | 0.051 | 0.051 mg/l |
| 1 Apr 2026, 11:03 | 0.042 | 0.042 mg/l |
| 26 Mar 2026, 08:37 | 0.12 | 0.12 mg/l |
| 23 Mar 2026, 12:39 | 0.067 | 0.067 mg/l |
| 4 Feb 2026, 13:00 | 0.066 | 0.066 mg/l |
| 26 Jan 2026, 09:31 | 0.083 | 0.083 mg/l |
| 7 Jan 2026, 11:51 | 0.079 | 0.079 mg/l |
| 6 Mar 2025, 09:55 | 0.06 | 0.06 mg/l |
| 5 Feb 2025, 11:08 | 0.08 | 0.08 mg/l |
| 22 Jan 2025, 12:25 | 0.077 | 0.077 mg/l |
| 19 Nov 2024, 11:17 | 0.1 | 0.1 mg/l |
| 17 Oct 2024, 11:56 | 0.094 | 0.094 mg/l |
| 16 Sep 2024, 12:08 | 0.11 | 0.11 mg/l |
| 20 Aug 2024, 13:04 | 0.041 | 0.041 mg/l |
| 23 Jul 2024, 10:46 | 0.025 | 0.025 mg/l |
| 19 Jun 2024, 13:50 | 0.038 | 0.038 mg/l |
| 13 May 2024, 10:07 | 0.044 | 0.044 mg/l |
| 25 Apr 2024, 15:59 | 0.034 | 0.034 mg/l |
| 6 Mar 2024, 10:21 | 0.056 | 0.056 mg/l |
| 5 Feb 2024, 09:55 | 0.076 | 0.076 mg/l |
| 11 Jan 2024, 10:09 | 0.074 | 0.074 mg/l |
| 6 Dec 2023, 11:45 | 0.1 | 0.1 mg/l |
| 8 Nov 2023, 15:10 | 0.088 | 0.088 mg/l |
| 2 Oct 2023, 09:26 | 0.058 | 0.058 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
578 µS/cm
Sampled 8 Sep 2026, 23 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 10:14 | 578 | 578 µS/cm |
| 4 Aug 2026, 10:08 | 593 | 593 µS/cm |
| 7 Jul 2026, 10:10 | 580 | 580 µS/cm |
| 8 Jun 2026, 10:23 | 563 | 563 µS/cm |
| 20 May 2026, 13:38 | 594 | 594 µS/cm |
| 11 May 2026, 09:41 | 613 | 613 µS/cm |
| 8 May 2026, 12:20 | 601 | 601 µS/cm |
| 22 Apr 2026, 11:45 | 638 | 638 µS/cm |
| 20 Apr 2026, 11:47 | 584 | 584 µS/cm |
| 7 Apr 2026, 17:30 | 584 | 584 µS/cm |
| 1 Apr 2026, 11:03 | 580 | 580 µS/cm |
| 26 Mar 2026, 08:37 | 622 | 622 µS/cm |
| 23 Mar 2026, 12:39 | 577 | 577 µS/cm |
| 4 Feb 2026, 13:00 | 502 | 502 µS/cm |
| 26 Jan 2026, 09:31 | 531 | 531 µS/cm |
| 7 Jan 2026, 11:51 | 616 | 616 µS/cm |
| 6 Mar 2025, 09:55 | 559 | 559 µS/cm |
| 5 Feb 2025, 11:08 | 564 | 564 µS/cm |
| 22 Jan 2025, 12:25 | 605 | 605 µS/cm |
| 6 Dec 2024, 12:13 | 501 | 501 µS/cm |
| 19 Nov 2024, 11:17 | 518 | 518 µS/cm |
| 17 Oct 2024, 11:56 | 462 | 462 µS/cm |
| 16 Sep 2024, 12:08 | 573 | 573 µS/cm |
| 20 Aug 2024, 13:04 | 591 | 591 µS/cm |
| 23 Jul 2024, 10:46 | 597 | 597 µS/cm |
| 19 Jun 2024, 13:50 | 563 | 563 µS/cm |
| 13 May 2024, 10:07 | 588 | 588 µS/cm |
| 25 Apr 2024, 15:59 | 580 | 580 µS/cm |
| 6 Mar 2024, 10:21 | 570 | 570 µS/cm |
| 5 Feb 2024, 09:55 | 588 | 588 µS/cm |
| 11 Jan 2024, 10:09 | 568 | 568 µS/cm |
| 6 Dec 2023, 11:45 | 462 | 462 µS/cm |
| 8 Nov 2023, 15:10 | 512 | 512 µS/cm |
| 2 Oct 2023, 09:26 | 574 | 574 µS/cm |
Everything measured here
87 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 87 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 34 | Oct 2023 – Sep 2026 | 78.3% 8 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Oct 2023 – May 2026 | 9.32 mg/l 20 May 2026 |
| Temperature of Water 0076 | River water | 34 | Oct 2023 – Sep 2026 | 14.8 °C 8 Sep 2026 |
| pH 0061 | River water | 55 | Oct 2023 – Sep 2026 | 8.1 8 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 26 | Oct 2023 – May 2026 | 0.13 mg/l 20 May 2026 |
| Nitrate as N 0117 | River water | 26 | Oct 2023 – May 2026 | 3.48 mg/l 20 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 26 | Oct 2023 – May 2026 | 0.04 mg/l 20 May 2026 |
| Conductivity at 25 C 0077 | River water | 34 | Oct 2023 – Sep 2026 | 578 µS/cm 8 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | May 2024 – Sep 2024 | below 0.004 µg/l 16 Sep 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 3 | May 2024 – Sep 2024 | below 0.005 µg/l 16 Sep 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | May 2024 – Sep 2024 | 0.013 µg/l 16 Sep 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 26 | Oct 2023 – May 2026 | 260 mg/l 20 May 2026 |
| Aluminium, Dissolved 6037 | River water | 23 | Oct 2023 – Mar 2026 | below 20 µg/l 17 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 26 | Oct 2023 – May 2026 | 0.00297 mg/l 20 May 2026 |
| Barium, Dissolved 9446 | River water | 6 | Apr 2026 – Sep 2026 | 220 µg/l 8 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 20 | Apr 2024 – May 2026 | 1.6 mg/l 20 May 2026 |
| Boron, Dissolved 9447 | River water | 6 | Apr 2026 – Sep 2026 | below 100 µg/l 8 Sep 2026 |
| Cadmium 0108 | River water | 6 | Apr 2026 – Sep 2026 | 0.2 µg/l 8 Sep 2026 |
| Cadmium, Dissolved 0106 | River water | 29 | Oct 2023 – Sep 2026 | 0.12 µg/l 8 Sep 2026 |
| Calcium, Dissolved 0239 | River water | 29 | Oct 2023 – Sep 2026 | 95 mg/l 8 Sep 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 30 | Oct 2023 – Sep 2026 | 2.6 mg/l 8 Sep 2026 |
| Chromium, Dissolved 3409 | River water | 23 | Oct 2023 – Mar 2026 | below 0.5 µg/l 17 Mar 2026 |
| Copper 6452 | River water | 6 | Apr 2026 – Sep 2026 | below 1 µg/l 8 Sep 2026 |
| Copper, Dissolved 6450 | River water | 29 | Oct 2023 – Sep 2026 | below 1 µg/l 8 Sep 2026 |
| Hardness, Total as CaCO3 0158 | River water | 29 | Oct 2023 – Sep 2026 | 287 mg/l 8 Sep 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Iron, Dissolved 6460 | River water | 6 | Apr 2026 – Sep 2026 | below 30 µg/l 8 Sep 2026 |
| Lead 0050 | River water | 6 | Apr 2026 – Sep 2026 | below 2 µg/l 8 Sep 2026 |
| Lead, Dissolved 0052 | River water | 29 | Oct 2023 – Sep 2026 | below 2 µg/l 8 Sep 2026 |
| Lithium, Dissolved 4201 | River water | 6 | Apr 2026 – Sep 2026 | below 100 µg/l 8 Sep 2026 |
| Magnesium, Dissolved 0235 | River water | 29 | Oct 2023 – Sep 2026 | 12 mg/l 8 Sep 2026 |
| Manganese, Dissolved 6458 | River water | 6 | Apr 2026 – Sep 2026 | 18 µg/l 8 Sep 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Nickel 6462 | River water | 6 | Apr 2026 – Sep 2026 | 2.7 µg/l 8 Sep 2026 |
| Nickel, Dissolved 3410 | River water | 29 | Oct 2023 – Sep 2026 | 2.3 µg/l 8 Sep 2026 |
| Nitrite as N 0118 | River water | 26 | Oct 2023 – May 2026 | 0.018 mg/l 20 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 26 | Oct 2023 – May 2026 | 3.5 mg/l 20 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorobutanoic acid 2995 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Perfluorodecanoic acid 8892 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | May 2024 – Sep 2024 | below 0.005 µg/l 16 Sep 2024 |
| Perfluorododecanoic acid 8894 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoroheptanoic acid 8889 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorohexanoic acid 8888 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorononanoic acid 8891 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorooctanoic acid 8890 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoropentanoic acid 8887 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | May 2024 – Sep 2024 | below 0.006 µg/l 16 Sep 2024 |
| Perfluorotridecanoic acid 2955 | River water | 3 | May 2024 – Sep 2024 | below 0.005 µg/l 16 Sep 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | May 2024 – Sep 2024 | below 0.004 µg/l 16 Sep 2024 |
| Perfluoroundecanoic acid 8893 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| pH : In Situ 3169 | River water | 7 | Apr 2026 – Sep 2026 | 8.08 8 Sep 2026 |
| Potassium, Dissolved 0209 | River water | 6 | Apr 2026 – Sep 2026 | 3.9 mg/l 8 Sep 2026 |
| Sodium, Dissolved 0205 | River water | 6 | Apr 2026 – Sep 2026 | 9.2 mg/l 8 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Apr 2026 – Sep 2026 | 5.6 mg/l 8 Sep 2026 |
| Strontium, Filtered 6693 | River water | 6 | Apr 2026 – Sep 2026 | 1600 µg/l 8 Sep 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 6 | Apr 2026 – Sep 2026 | 25 mg/l 8 Sep 2026 |
| Zinc 6455 | River water | 6 | Apr 2026 – Sep 2026 | 280 µg/l 8 Sep 2026 |
| Zinc, Dissolved 3408 | River water | 29 | Oct 2023 – Sep 2026 | 260 µg/l 8 Sep 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.