River Tavy at Hill Bridge
EA name: RIVER TAVY AT HILL BRIDGE
Environment Agency sampling point SW-81231190 · 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
- 26 Aug 2026, 11:4336 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 17 Jun 2024 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 253177, 80388As published, to the nearest 1 m. Open in a map
- River, by its own name
- Tavy
- River, by the map
- River TavyPlaced on the river its name gives, 15 m from the line.
- Next gauge downstream
- Mary Tavy On the River Tavy · 3.4 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (17 samples)
Monitoring (national agency policy) (10 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
103.5%
Sampled 13 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 May 2026, 12:01 | 103.5 | 103.5% |
| 16 Apr 2026, 10:47 | 104.2 | 104.2% |
| 25 Mar 2026, 13:37 | 103.7 | 103.7% |
| 12 Feb 2026, 12:34 | 101.8 | 101.8% |
| 28 Jan 2026, 11:33 | 100 | 100% |
| 17 Dec 2025, 09:12 | 100 | 100% |
| 21 Nov 2025, 09:46 | 99.6 | 99.6% |
| 8 Oct 2025, 10:38 | 100.6 | 100.6% |
| 17 Sep 2025, 11:51 | 101.7 | 101.7% |
| 27 Aug 2025, 12:46 | 103.2 | 103.2% |
| 14 Jul 2025, 09:49 | 102 | 102% |
| 3 Jun 2025, 14:23 | 101 | 101% |
| 8 May 2025, 12:33 | 102.3 | 102.3% |
| 16 Apr 2025, 11:31 | 99.7 | 99.7% |
| 25 Mar 2025, 12:39 | 106.4 | 106.4% |
| 12 Feb 2025, 10:21 | 100 | 100% |
| 22 Jan 2025, 12:09 | 100 | 100% |
| 3 Dec 2024, 11:15 | 100 | 100% |
| 28 Nov 2024, 10:59 | 100 | 100% |
| 25 Oct 2024, 12:14 | 100 | 100% |
| 20 Sep 2024, 13:28 | 107.7 | 107.7% |
| 29 Aug 2024, 12:41 | 101.4 | 101.4% |
| 19 Jul 2024, 12:14 | 101.8 | 101.8% |
| 17 Jun 2024, 10:59 | 102.2 | 102.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.5 mg/l
Sampled 13 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 May 2026, 12:01 | 11.5 | 11.5 mg/l |
| 16 Apr 2026, 10:47 | 11.7 | 11.7 mg/l |
| 25 Mar 2026, 13:37 | 12.4 | 12.4 mg/l |
| 12 Feb 2026, 12:34 | 12 | 12 mg/l |
| 28 Jan 2026, 11:33 | 12.3 | 12.3 mg/l |
| 17 Dec 2025, 09:12 | 11.8 | 11.8 mg/l |
| 21 Nov 2025, 09:46 | 12.7 | 12.7 mg/l |
| 8 Oct 2025, 10:38 | 10.9 | 10.9 mg/l |
| 17 Sep 2025, 11:51 | 10.5 | 10.5 mg/l |
| 27 Aug 2025, 12:46 | 10.3 | 10.3 mg/l |
| 14 Jul 2025, 09:49 | 9.89 | 9.89 mg/l |
| 3 Jun 2025, 14:23 | 10.5 | 10.5 mg/l |
| 8 May 2025, 12:33 | 11.2 | 11.2 mg/l |
| 16 Apr 2025, 11:31 | 12.2 | 12.2 mg/l |
| 25 Mar 2025, 12:39 | 11.9 | 11.9 mg/l |
| 12 Feb 2025, 10:21 | 12.9 | 12.9 mg/l |
| 22 Jan 2025, 12:09 | 12.2 | 12.2 mg/l |
| 3 Dec 2024, 11:15 | 12.2 | 12.2 mg/l |
| 28 Nov 2024, 10:59 | 11.9 | 11.9 mg/l |
| 25 Oct 2024, 12:14 | 10.8 | 10.8 mg/l |
| 20 Sep 2024, 13:28 | 11 | 11 mg/l |
| 29 Aug 2024, 12:41 | 10.5 | 10.5 mg/l |
| 19 Jul 2024, 12:14 | 10 | 10 mg/l |
| 17 Jun 2024, 10:59 | 10.8 | 10.8 mg/l |
Water temperature
code 0076 · °C
17.8 °C
Sampled 26 Aug 2026, 36 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 11:43 | 17.8 | 17.8 °C |
| 16 Jul 2026, 11:29 | 18 | 18 °C |
| 16 Jun 2026, 10:31 | 14.7 | 14.7 °C |
| 13 May 2026, 12:01 | 10.6 | 10.6 °C |
| 16 Apr 2026, 10:47 | 10.2 | 10.2 °C |
| 25 Mar 2026, 13:37 | 7.7 | 7.7 °C |
| 12 Feb 2026, 12:34 | 8 | 8 °C |
| 28 Jan 2026, 11:33 | 6.5 | 6.5 °C |
| 17 Dec 2025, 09:12 | 8 | 8 °C |
| 21 Nov 2025, 09:46 | 4.9 | 4.9 °C |
| 8 Oct 2025, 10:38 | 11.6 | 11.6 °C |
| 17 Sep 2025, 11:51 | 13.6 | 13.6 °C |
| 27 Aug 2025, 12:46 | 15.5 | 15.5 °C |
| 14 Jul 2025, 09:49 | 16.7 | 16.7 °C |
| 3 Jun 2025, 14:23 | 13.6 | 13.6 °C |
| 8 May 2025, 12:33 | 11.4 | 11.4 °C |
| 16 Apr 2025, 11:31 | 6.5 | 6.5 °C |
| 25 Mar 2025, 12:39 | 10.2 | 10.2 °C |
| 12 Feb 2025, 10:21 | 4.7 | 4.7 °C |
| 22 Jan 2025, 12:09 | 6.6 | 6.6 °C |
| 3 Dec 2024, 11:15 | 6.7 | 6.7 °C |
| 28 Nov 2024, 10:59 | 7.6 | 7.6 °C |
| 25 Oct 2024, 12:14 | 11.7 | 11.7 °C |
| 20 Sep 2024, 13:28 | 14.2 | 14.2 °C |
| 29 Aug 2024, 12:41 | 13.7 | 13.7 °C |
| 19 Jul 2024, 12:14 | 16 | 16 °C |
| 17 Jun 2024, 10:59 | 12.8 | 12.8 °C |
pH
code 0061
7.44
Sampled 26 Aug 2026, 36 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 11:43 | 7.44 | 7.44 |
| 16 Jul 2026, 11:29 | 7.32 | 7.32 |
| 16 Jun 2026, 10:31 | 6.77 | 6.77 |
| 13 May 2026, 12:01 | 7 | 7 |
| 16 Apr 2026, 10:47 | 6.45 | 6.45 |
| 25 Mar 2026, 13:37 | 6.87 | 6.87 |
| 12 Feb 2026, 12:34 | 5.23 | 5.23 |
| 28 Jan 2026, 11:33 | 6.7 | 6.7 |
| 17 Dec 2025, 09:12 | 6.71 | 6.71 |
| 21 Nov 2025, 09:46 | 6.1 | 6.1 |
| 8 Oct 2025, 10:38 | 6.82 | 6.82 |
| 17 Sep 2025, 11:51 | 5.19 | 5.19 |
| 27 Aug 2025, 12:46 | 7.09 | 7.09 |
| 14 Jul 2025, 09:49 | 7.07 | 7.07 |
| 3 Jun 2025, 14:23 | 6.8 | 6.8 |
| 8 May 2025, 12:33 | 7.19 | 7.19 |
| 16 Apr 2025, 11:31 | 5.22 | 5.22 |
| 25 Mar 2025, 12:39 | 7.25 | 7.25 |
| 12 Feb 2025, 10:21 | 6.63 | 6.63 |
| 22 Jan 2025, 12:09 | 6.3 | 6.3 |
| 3 Dec 2024, 11:15 | 6.3 | 6.3 |
| 28 Nov 2024, 10:59 | 6.56 | 6.56 |
| 25 Oct 2024, 12:14 | 6.5 | 6.5 |
| 20 Sep 2024, 13:28 | 6.91 | 6.91 |
| 29 Aug 2024, 12:41 | 6.56 | 6.56 |
| 19 Jul 2024, 12:14 | 6.99 | 6.99 |
| 17 Jun 2024, 10:59 | 6.99 | 6.99 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 26 Aug 2026, 36 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 11:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2026, 11:29 | 0.045 | 0.045 mg/l |
| 16 Jun 2026, 10:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2026, 12:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2026, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Mar 2026, 13:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Feb 2026, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jan 2026, 11:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Dec 2025, 09:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Nov 2025, 09:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2025, 10:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Sep 2025, 11:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Aug 2025, 12:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jul 2025, 09:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jun 2025, 14:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2025, 12:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2025, 11:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Mar 2025, 12:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Feb 2025, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2025, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Dec 2024, 11:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Nov 2024, 10:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Oct 2024, 12:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Sep 2024, 13:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Aug 2024, 12:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jul 2024, 12:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 10:59 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.196 mg/l (not detected above this)
Sampled 13 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 May 2026, 12:01 | <0.196 | below 0.196 mg/l (not detected above this) |
| 16 Apr 2026, 10:47 | <0.196 | below 0.196 mg/l (not detected above this) |
| 25 Mar 2026, 13:37 | 0.266 | 0.266 mg/l |
| 12 Feb 2026, 12:34 | 0.196 | 0.196 mg/l |
| 28 Jan 2026, 11:33 | 0.316 | 0.316 mg/l |
| 17 Dec 2025, 09:12 | 0.506 | 0.506 mg/l |
| 21 Nov 2025, 09:46 | 0.526 | 0.526 mg/l |
| 8 Oct 2025, 10:38 | 0.406 | 0.406 mg/l |
| 17 Sep 2025, 11:51 | <0.196 | below 0.196 mg/l (not detected above this) |
| 27 Aug 2025, 12:46 | 0.236 | 0.236 mg/l |
| 14 Jul 2025, 09:49 | 0.316 | 0.316 mg/l |
| 3 Jun 2025, 14:23 | 0.206 | 0.206 mg/l |
| 8 May 2025, 12:33 | 0.236 | 0.236 mg/l |
| 16 Apr 2025, 11:31 | <0.196 | below 0.196 mg/l (not detected above this) |
| 25 Mar 2025, 12:39 | 0.316 | 0.316 mg/l |
| 12 Feb 2025, 10:21 | 0.476 | 0.476 mg/l |
| 22 Jan 2025, 12:09 | 0.486 | 0.486 mg/l |
| 3 Dec 2024, 11:15 | 0.456 | 0.456 mg/l |
| 28 Nov 2024, 10:59 | 0.456 | 0.456 mg/l |
| 25 Oct 2024, 12:14 | <0.196 | below 0.196 mg/l (not detected above this) |
| 20 Sep 2024, 13:28 | <0.196 | below 0.196 mg/l (not detected above this) |
| 29 Aug 2024, 12:41 | <0.196 | below 0.196 mg/l (not detected above this) |
| 19 Jul 2024, 12:14 | <0.196 | below 0.196 mg/l (not detected above this) |
| 17 Jun 2024, 10:59 | <0.196 | below 0.196 mg/l (not detected above this) |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 13 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 May 2026, 12:01 | <0.01 | below 0.01 mg/l (not detected above this) |
| 16 Apr 2026, 10:47 | <0.01 | below 0.01 mg/l (not detected above this) |
| 25 Mar 2026, 13:37 | <0.01 | below 0.01 mg/l (not detected above this) |
| 12 Feb 2026, 12:34 | <0.01 | below 0.01 mg/l (not detected above this) |
| 28 Jan 2026, 11:33 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Dec 2025, 09:12 | <0.01 | below 0.01 mg/l (not detected above this) |
| 21 Nov 2025, 09:46 | <0.01 | below 0.01 mg/l (not detected above this) |
| 8 Oct 2025, 10:38 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Sep 2025, 11:51 | <0.01 | below 0.01 mg/l (not detected above this) |
| 27 Aug 2025, 12:46 | <0.01 | below 0.01 mg/l (not detected above this) |
| 14 Jul 2025, 09:49 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Jun 2025, 14:23 | <0.01 | below 0.01 mg/l (not detected above this) |
| 8 May 2025, 12:33 | <0.01 | below 0.01 mg/l (not detected above this) |
| 16 Apr 2025, 11:31 | <0.01 | below 0.01 mg/l (not detected above this) |
| 25 Mar 2025, 12:39 | <0.01 | below 0.01 mg/l (not detected above this) |
| 12 Feb 2025, 10:21 | <0.01 | below 0.01 mg/l (not detected above this) |
| 22 Jan 2025, 12:09 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Dec 2024, 11:15 | <0.01 | below 0.01 mg/l (not detected above this) |
| 28 Nov 2024, 10:59 | <0.01 | below 0.01 mg/l (not detected above this) |
| 25 Oct 2024, 12:14 | <0.01 | below 0.01 mg/l (not detected above this) |
| 20 Sep 2024, 13:28 | <0.01 | below 0.01 mg/l (not detected above this) |
| 29 Aug 2024, 12:41 | <0.01 | below 0.01 mg/l (not detected above this) |
| 19 Jul 2024, 12:14 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Jun 2024, 10:59 | <0.01 | below 0.01 mg/l (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
50 µS/cm
Sampled 26 Aug 2026, 36 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Aug 2026, 11:43 | 50 | 50 µS/cm |
| 16 Jul 2026, 11:29 | 47 | 47 µS/cm |
| 16 Jun 2026, 10:31 | 46 | 46 µS/cm |
| 13 May 2026, 12:01 | 45 | 45 µS/cm |
| 16 Apr 2026, 10:47 | 42 | 42 µS/cm |
| 25 Mar 2026, 13:37 | 46 | 46 µS/cm |
| 12 Feb 2026, 12:34 | 28 | 28 µS/cm |
| 28 Jan 2026, 11:33 | 40 | 40 µS/cm |
| 17 Dec 2025, 09:12 | 49 | 49 µS/cm |
| 21 Nov 2025, 09:46 | 55 | 55 µS/cm |
| 8 Oct 2025, 10:38 | 52 | 52 µS/cm |
| 17 Sep 2025, 11:51 | 45 | 45 µS/cm |
| 27 Aug 2025, 12:46 | 48 | 48 µS/cm |
| 14 Jul 2025, 09:49 | 49 | 49 µS/cm |
| 3 Jun 2025, 14:23 | 41 | 41 µS/cm |
| 8 May 2025, 12:33 | 44 | 44 µS/cm |
| 16 Apr 2025, 11:31 | 36 | 36 µS/cm |
| 25 Mar 2025, 12:39 | 52 | 52 µS/cm |
| 12 Feb 2025, 10:21 | 53 | 53 µS/cm |
| 22 Jan 2025, 12:09 | 54 | 54 µS/cm |
| 3 Dec 2024, 11:15 | 44 | 44 µS/cm |
| 28 Nov 2024, 10:59 | 47 | 47 µS/cm |
| 25 Oct 2024, 12:14 | 39 | 39 µS/cm |
| 20 Sep 2024, 13:28 | 45 | 45 µS/cm |
| 29 Aug 2024, 12:41 | 41 | 41 µS/cm |
| 19 Jul 2024, 12:14 | 40 | 40 µS/cm |
| 17 Jun 2024, 10:59 | 44 | 44 µS/cm |
Everything measured here
62 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 62 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 24 | Jun 2024 – May 2026 | 103.5% 13 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jun 2024 – May 2026 | 11.5 mg/l 13 May 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Aug 2026 | 17.8 °C 26 Aug 2026 |
| pH 0061 | River water | 27 | Jun 2024 – Aug 2026 | 7.44 26 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jun 2024 – Aug 2026 | below 0.03 mg/l 26 Aug 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | below 0.196 mg/l 13 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | below 0.01 mg/l 13 May 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Aug 2026 | 50 µS/cm 26 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jun 2024 – Aug 2026 | below 8 mg/l 26 Aug 2026 |
| Aluminium 6057 | River water | 17 | Apr 2025 – Aug 2026 | 28 µg/l 26 Aug 2026 |
| Aluminium, Dissolved 6037 | River water | 17 | Apr 2025 – Aug 2026 | 20 µg/l 26 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | below 0.00006 mg/l 13 May 2026 |
| Arsenic 6046 | River water | 17 | Apr 2025 – Aug 2026 | 2.6 µg/l 26 Aug 2026 |
| Arsenic, Dissolved 6045 | River water | 17 | Apr 2025 – Aug 2026 | 2.5 µg/l 26 Aug 2026 |
| Barium 6062 | River water | 17 | Apr 2025 – Aug 2026 | below 10 µg/l 26 Aug 2026 |
| Barium, Dissolved 9446 | River water | 17 | Apr 2025 – Aug 2026 | below 10 µg/l 26 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | below 1 mg/l 13 May 2026 |
| Boron 6059 | River water | 17 | Apr 2025 – Aug 2026 | below 100 µg/l 26 Aug 2026 |
| Boron, Dissolved 9447 | River water | 17 | Apr 2025 – Aug 2026 | below 100 µg/l 26 Aug 2026 |
| Cadmium 0108 | River water | 17 | Apr 2025 – Aug 2026 | below 0.1 µg/l 26 Aug 2026 |
| Cadmium, Dissolved 0106 | River water | 17 | Apr 2025 – Aug 2026 | below 0.01 µg/l 26 Aug 2026 |
| Calcium 0241 | River water | 17 | Apr 2025 – Aug 2026 | 1.4 mg/l 26 Aug 2026 |
| Calcium, Dissolved 0239 | River water | 17 | Apr 2025 – Aug 2026 | 1.3 mg/l 26 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 16 | Apr 2025 – Aug 2026 | 1.6 mg/l 26 Aug 2026 |
| Chloride 0172 | River water | 17 | Apr 2025 – Aug 2026 | 8.5 mg/l 26 Aug 2026 |
| Chromium 3164 | River water | 17 | Apr 2025 – Aug 2026 | below 0.5 µg/l 26 Aug 2026 |
| Chromium, Dissolved 3409 | River water | 17 | Apr 2025 – Aug 2026 | below 0.5 µg/l 26 Aug 2026 |
| Copper 6452 | River water | 17 | Apr 2025 – Aug 2026 | below 1 µg/l 26 Aug 2026 |
| Copper : BLM Bioavailable 4821 | River water | 16 | Apr 2025 – Aug 2026 | 0.04 µg/l 26 Aug 2026 |
| Copper, Dissolved 6450 | River water | 17 | Apr 2025 – Aug 2026 | 0.26 µg/l 26 Aug 2026 |
| Hardness, Total as CaCO3 0158 | River water | 17 | Apr 2025 – Aug 2026 | 7.32 mg/l 26 Aug 2026 |
| Ionic Balance 7044 | River water | 17 | Apr 2025 – Aug 2026 | -18.3% 26 Aug 2026 |
| Iron 6051 | River water | 17 | Apr 2025 – Aug 2026 | 170 µg/l 26 Aug 2026 |
| Iron, Dissolved 6460 | River water | 17 | Apr 2025 – Aug 2026 | 120 µg/l 26 Aug 2026 |
| Lead 0050 | River water | 17 | Apr 2025 – Aug 2026 | below 2 µg/l 26 Aug 2026 |
| Lead : BLM Bioavailable 3377 | River water | 16 | Apr 2025 – Aug 2026 | 0.03 µg/l 26 Aug 2026 |
| Lead, Dissolved 0052 | River water | 17 | Apr 2025 – Aug 2026 | below 0.1 µg/l 26 Aug 2026 |
| Lithium 6064 | River water | 17 | Apr 2025 – Aug 2026 | below 100 µg/l 26 Aug 2026 |
| Lithium, Dissolved 4201 | River water | 17 | Apr 2025 – Aug 2026 | below 100 µg/l 26 Aug 2026 |
| Magnesium 0237 | River water | 17 | Apr 2025 – Aug 2026 | 1 mg/l 26 Aug 2026 |
| Magnesium, Dissolved 0235 | River water | 17 | Apr 2025 – Aug 2026 | 0.99 mg/l 26 Aug 2026 |
| Manganese 6050 | River water | 17 | Apr 2025 – Aug 2026 | below 10 µg/l 26 Aug 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 16 | Apr 2025 – Aug 2026 | 5 µg/l 26 Aug 2026 |
| Manganese, Dissolved 6458 | River water | 17 | Apr 2025 – Aug 2026 | below 10 µg/l 26 Aug 2026 |
| Nickel 6462 | River water | 17 | Apr 2025 – Aug 2026 | below 1 µg/l 26 Aug 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 16 | Apr 2025 – Aug 2026 | 0.15 µg/l 26 Aug 2026 |
| Nickel, Dissolved 3410 | River water | 17 | Apr 2025 – Aug 2026 | below 0.5 µg/l 26 Aug 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – Aug 2026 | below 0.004 mg/l 26 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Jun 2024 – Aug 2026 | 0.25 mg/l 26 Aug 2026 |
| Potassium 0211 | River water | 17 | Apr 2025 – Aug 2026 | 0.73 mg/l 26 Aug 2026 |
| Potassium, Dissolved 0209 | River water | 17 | Apr 2025 – Aug 2026 | 0.71 mg/l 26 Aug 2026 |
| Silica, reactive as SiO2 0182 | River water | 17 | Apr 2025 – Aug 2026 | 6.1 mg/l 26 Aug 2026 |
| Sodium 0207 | River water | 17 | Apr 2025 – Aug 2026 | 6 mg/l 26 Aug 2026 |
| Sodium, Dissolved 0205 | River water | 17 | Apr 2025 – Aug 2026 | 5.6 mg/l 26 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 17 | Apr 2025 – Aug 2026 | below 3 mg/l 26 Aug 2026 |
| Strontium 6063 | River water | 17 | Apr 2025 – Aug 2026 | below 20 µg/l 26 Aug 2026 |
| Strontium, Filtered 6693 | River water | 17 | Apr 2025 – Aug 2026 | below 20 µg/l 26 Aug 2026 |
| Sulphate as SO4 0183 | River water | 17 | Apr 2025 – Aug 2026 | below 10 mg/l 26 Aug 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 17 | Apr 2025 – Aug 2026 | below 10 mg/l 26 Aug 2026 |
| Zinc 6455 | River water | 17 | Apr 2025 – Aug 2026 | below 5 µg/l 26 Aug 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 16 | Apr 2025 – Aug 2026 | 0.66 µg/l 26 Aug 2026 |
| Zinc, Dissolved 3408 | River water | 17 | Apr 2025 – Aug 2026 | 0.66 µg/l 26 Aug 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.