Tributary of Pow Maughan
EA name: TRIB OF POW MAUGHAN
Environment Agency sampling point NW-SSN1286 · 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 Apr 2026, 10:105 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 35 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 346420, 548940As published, to the nearest 10 m. Open in a map
- River, by its own name
- Pow Maughan
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (35 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98.6%
Sampled 22 Apr 2026, 5 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Apr 2026, 10:10 | 98.6 | 98.6% |
| 6 Mar 2026, 07:38 | 96.8 | 96.8% |
| 5 Feb 2026, 12:40 | 92.5 | 92.5% |
| 5 Jan 2026, 13:11 | 79.4 | 79.4% |
| 11 Dec 2025, 13:05 | 95.8 | 95.8% |
| 11 Nov 2025, 09:44 | 97.1 | 97.1% |
| 6 Oct 2025, 14:25 | 93.5 | 93.5% |
| 18 Sep 2025, 13:40 | 87.4 | 87.4% |
| 28 Aug 2025, 11:28 | 89.2 | 89.2% |
| 9 Jul 2025, 14:36 | 81.5 | 81.5% |
| 16 Jun 2025, 11:01 | 97.5 | 97.5% |
| 13 May 2025, 12:18 | 77 | 77% |
| 9 Apr 2025, 12:27 | 95.9 | 95.9% |
| 19 Mar 2025, 12:48 | 96.9 | 96.9% |
| 5 Feb 2025, 07:46 | 98.4 | 98.4% |
| 10 Jan 2025, 12:36 | 98.7 | 98.7% |
| 2 Dec 2024, 09:55 | 97.7 | 97.7% |
| 6 Nov 2024, 09:16 | 93.3 | 93.3% |
| 4 Oct 2024, 10:32 | 73.8 | 73.8% |
| 20 Sep 2024, 11:56 | 64 | 64% |
| 1 Aug 2024, 11:03 | 86.2 | 86.2% |
| 1 Jul 2024, 10:39 | 90.6 | 90.6% |
| 11 Jun 2024, 09:54 | 97.2 | 97.2% |
| 1 May 2024, 13:47 | 103.1 | 103.1% |
| 3 Apr 2024, 13:12 | 101 | 101% |
| 12 Mar 2024, 10:17 | 101.6 | 101.6% |
| 1 Feb 2024, 10:39 | 98 | 98% |
| 2 Jan 2024, 09:12 | 95.4 | 95.4% |
| 5 Dec 2023, 09:13 | 96.4 | 96.4% |
| 2 Nov 2023, 08:28 | 96.3 | 96.3% |
| 2 Oct 2023, 09:10 | 9.5 | 9.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.5 mg/l
Sampled 22 Apr 2026, 5 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Apr 2026, 10:10 | 11.5 | 11.5 mg/l |
| 6 Mar 2026, 07:38 | 11.3 | 11.3 mg/l |
| 5 Feb 2026, 12:40 | 11.6 | 11.6 mg/l |
| 5 Jan 2026, 13:11 | 10.9 | 10.9 mg/l |
| 11 Dec 2025, 13:05 | 11.2 | 11.2 mg/l |
| 11 Nov 2025, 09:44 | 11 | 11 mg/l |
| 6 Oct 2025, 14:25 | 9.74 | 9.74 mg/l |
| 18 Sep 2025, 13:40 | 8.64 | 8.64 mg/l |
| 28 Aug 2025, 11:28 | 8.76 | 8.76 mg/l |
| 9 Jul 2025, 14:36 | 7.57 | 7.57 mg/l |
| 16 Jun 2025, 11:01 | 9.24 | 9.24 mg/l |
| 13 May 2025, 12:18 | 7.97 | 7.97 mg/l |
| 9 Apr 2025, 12:27 | 10.7 | 10.7 mg/l |
| 19 Mar 2025, 12:48 | 11.7 | 11.7 mg/l |
| 5 Feb 2025, 07:46 | 12.7 | 12.7 mg/l |
| 10 Jan 2025, 12:36 | 13.6 | 13.6 mg/l |
| 2 Dec 2024, 09:55 | 11.6 | 11.6 mg/l |
| 6 Nov 2024, 09:16 | 10.3 | 10.3 mg/l |
| 4 Oct 2024, 10:32 | 8.2 | 8.2 mg/l |
| 20 Sep 2024, 11:56 | 6.59 | 6.59 mg/l |
| 1 Aug 2024, 11:03 | 8.36 | 8.36 mg/l |
| 1 Jul 2024, 10:39 | 9.33 | 9.33 mg/l |
| 11 Jun 2024, 09:54 | 10.2 | 10.2 mg/l |
| 1 May 2024, 13:47 | 10.5 | 10.5 mg/l |
| 3 Apr 2024, 13:12 | 11.7 | 11.7 mg/l |
| 12 Mar 2024, 10:17 | 12.3 | 12.3 mg/l |
| 1 Feb 2024, 10:39 | 12.4 | 12.4 mg/l |
| 2 Jan 2024, 09:12 | 11.9 | 11.9 mg/l |
| 5 Dec 2023, 09:13 | 12.6 | 12.6 mg/l |
| 2 Nov 2023, 08:28 | 11.2 | 11.2 mg/l |
| 2 Oct 2023, 09:10 | 1.02 | 1.02 mg/l |
Water temperature
code 0076 · °C
8.7 °C
Sampled 22 Apr 2026, 5 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Apr 2026, 10:10 | 8.7 | 8.7 °C |
| 6 Mar 2026, 07:38 | 8.5 | 8.5 °C |
| 5 Feb 2026, 12:40 | 5.5 | 5.5 °C |
| 5 Jan 2026, 13:11 | 2.1 | 2.1 °C |
| 11 Dec 2025, 13:05 | 8.3 | 8.3 °C |
| 11 Nov 2025, 09:44 | 9.9 | 9.9 °C |
| 6 Oct 2025, 14:25 | 13.4 | 13.4 °C |
| 18 Sep 2025, 13:40 | 15.8 | 15.8 °C |
| 28 Aug 2025, 11:28 | 16.1 | 16.1 °C |
| 9 Jul 2025, 14:36 | 18.8 | 18.8 °C |
| 16 Jun 2025, 11:01 | 17.8 | 17.8 °C |
| 13 May 2025, 12:18 | 13.7 | 13.7 °C |
| 9 Apr 2025, 12:27 | 10.4 | 10.4 °C |
| 19 Mar 2025, 12:48 | 7 | 7 °C |
| 5 Feb 2025, 07:46 | 4.5 | 4.5 °C |
| 10 Jan 2025, 12:36 | 2.2 | 2.2 °C |
| 2 Dec 2024, 09:55 | 7.8 | 7.8 °C |
| 6 Nov 2024, 09:16 | 10.8 | 10.8 °C |
| 4 Oct 2024, 10:32 | 10.6 | 10.6 °C |
| 20 Sep 2024, 11:56 | 13.9 | 13.9 °C |
| 1 Aug 2024, 11:03 | 16.7 | 16.7 °C |
| 1 Jul 2024, 10:39 | 13.9 | 13.9 °C |
| 11 Jun 2024, 09:54 | 13.1 | 13.1 °C |
| 1 May 2024, 13:47 | 14.5 | 14.5 °C |
| 3 Apr 2024, 13:12 | 9 | 9 °C |
| 12 Mar 2024, 10:17 | 6.9 | 6.9 °C |
| 1 Feb 2024, 10:39 | 5.4 | 5.4 °C |
| 2 Jan 2024, 09:12 | 5.7 | 5.7 °C |
| 5 Dec 2023, 09:13 | 4 | 4 °C |
| 2 Nov 2023, 08:28 | 8.8 | 8.8 °C |
| 2 Oct 2023, 09:10 | 11.9 | 11.9 °C |
pH
code 0061
8.02
Sampled 22 Apr 2026, 5 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Apr 2026, 10:10 | 8.02 | 8.02 |
| 6 Mar 2026, 07:38 | 7.66 | 7.66 |
| 5 Feb 2026, 12:40 | 7.47 | 7.47 |
| 5 Jan 2026, 13:11 | 7.66 | 7.66 |
| 11 Dec 2025, 13:05 | 7.68 | 7.68 |
| 11 Nov 2025, 09:44 | 7.88 | 7.88 |
| 6 Oct 2025, 14:25 | 7.65 | 7.65 |
| 18 Sep 2025, 13:40 | 7.83 | 7.83 |
| 28 Aug 2025, 11:28 | 7.66 | 7.66 |
| 9 Jul 2025, 14:36 | 7.69 | 7.69 |
| 16 Jun 2025, 11:01 | 7.91 | 7.91 |
| 13 May 2025, 12:18 | 7.39 | 7.39 |
| 9 Apr 2025, 12:27 | 8.03 | 8.03 |
| 19 Mar 2025, 12:48 | 7.77 | 7.77 |
| 5 Feb 2025, 07:46 | 7.79 | 7.79 |
| 10 Jan 2025, 12:36 | 7.83 | 7.83 |
| 2 Dec 2024, 09:55 | 7.6 | 7.6 |
| 6 Nov 2024, 09:16 | 7.79 | 7.79 |
| 4 Oct 2024, 10:32 | 7.64 | 7.64 |
| 20 Sep 2024, 11:56 | 7.56 | 7.56 |
| 1 Aug 2024, 11:03 | 7.83 | 7.83 |
| 1 Jul 2024, 10:39 | 7.95 | 7.95 |
| 11 Jun 2024, 09:54 | 7.91 | 7.91 |
| 1 May 2024, 13:47 | 7.88 | 7.88 |
| 3 Apr 2024, 13:12 | 7.62 | 7.62 |
| 12 Mar 2024, 10:17 | 7.83 | 7.83 |
| 1 Feb 2024, 10:39 | 7.54 | 7.54 |
| 2 Jan 2024, 09:12 | 7.5 | 7.5 |
| 5 Dec 2023, 09:13 | 7.49 | 7.49 |
| 2 Nov 2023, 08:28 | 7.62 | 7.62 |
| 2 Oct 2023, 09:10 | 7.55 | 7.55 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.31 mg/l
Sampled 22 Apr 2026, 5 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Apr 2026, 10:10 | 0.31 | 0.31 mg/l |
| 6 Mar 2026, 07:38 | 0.049 | 0.049 mg/l |
| 5 Feb 2026, 12:40 | 0.59 | 0.59 mg/l |
| 5 Jan 2026, 13:11 | 20 | 20 mg/l |
| 11 Dec 2025, 13:05 | 0.18 | 0.18 mg/l |
| 11 Nov 2025, 09:44 | 0.074 | 0.074 mg/l |
| 6 Oct 2025, 14:25 | 0.044 | 0.044 mg/l |
| 18 Sep 2025, 13:40 | 0.21 | 0.21 mg/l |
| 28 Aug 2025, 11:28 | 3.5 | 3.5 mg/l |
| 9 Jul 2025, 14:36 | 0.12 | 0.12 mg/l |
| 16 Jun 2025, 11:01 | 0.22 | 0.22 mg/l |
| 13 May 2025, 12:18 | 0.87 | 0.87 mg/l |
| 9 Apr 2025, 12:27 | 2.7 | 2.7 mg/l |
| 19 Mar 2025, 12:48 | 0.067 | 0.067 mg/l |
| 5 Feb 2025, 07:46 | 0.038 | 0.038 mg/l |
| 10 Jan 2025, 12:36 | 0.25 | 0.25 mg/l |
| 2 Dec 2024, 09:55 | 0.04 | 0.04 mg/l |
| 6 Nov 2024, 09:16 | 0.062 | 0.062 mg/l |
| 4 Oct 2024, 10:32 | 1.3 | 1.3 mg/l |
| 20 Sep 2024, 11:56 | 0.39 | 0.39 mg/l |
| 1 Aug 2024, 11:03 | 0.054 | 0.054 mg/l |
| 1 Jul 2024, 10:39 | 0.19 | 0.19 mg/l |
| 11 Jun 2024, 09:54 | 0.077 | 0.077 mg/l |
| 1 May 2024, 13:47 | 0.099 | 0.099 mg/l |
| 3 Apr 2024, 13:12 | 0.16 | 0.16 mg/l |
| 12 Mar 2024, 10:17 | 0.077 | 0.077 mg/l |
| 1 Feb 2024, 10:39 | 0.052 | 0.052 mg/l |
| 2 Jan 2024, 09:12 | 0.041 | 0.041 mg/l |
| 5 Dec 2023, 09:13 | 0.063 | 0.063 mg/l |
| 2 Nov 2023, 08:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2023, 09:10 | 0.17 | 0.17 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.57 mg/l
Sampled 22 Apr 2026, 5 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Apr 2026, 10:10 | 2.57 | 2.57 mg/l |
| 6 Mar 2026, 07:38 | 2.88 | 2.88 mg/l |
| 5 Feb 2026, 12:40 | 10.9 | 10.9 mg/l |
| 5 Jan 2026, 13:11 | 8.13 | 8.13 mg/l |
| 11 Dec 2025, 13:05 | 7.97 | 7.97 mg/l |
| 11 Nov 2025, 09:44 | 3.48 | 3.48 mg/l |
| 6 Oct 2025, 14:25 | 3.67 | 3.67 mg/l |
| 18 Sep 2025, 13:40 | 6.78 | 6.78 mg/l |
| 28 Aug 2025, 11:28 | 0.5 | 0.5 mg/l |
| 9 Jul 2025, 14:36 | 0.919 | 0.919 mg/l |
| 16 Jun 2025, 11:01 | 1.44 | 1.44 mg/l |
| 13 May 2025, 12:18 | 13.7 | 13.7 mg/l |
| 9 Apr 2025, 12:27 | 3.23 | 3.23 mg/l |
| 19 Mar 2025, 12:48 | 14 | 14 mg/l |
| 5 Feb 2025, 07:46 | 3.09 | 3.09 mg/l |
| 10 Jan 2025, 12:36 | 3.38 | 3.38 mg/l |
| 2 Dec 2024, 09:55 | 2.09 | 2.09 mg/l |
| 6 Nov 2024, 09:16 | 1.87 | 1.87 mg/l |
| 4 Oct 2024, 10:32 | 1.82 | 1.82 mg/l |
| 20 Sep 2024, 11:56 | 1.31 | 1.31 mg/l |
| 1 Aug 2024, 11:03 | 1.64 | 1.64 mg/l |
| 1 Jul 2024, 10:39 | 2.79 | 2.79 mg/l |
| 11 Jun 2024, 09:54 | 3.37 | 3.37 mg/l |
| 1 May 2024, 13:47 | 1.39 | 1.39 mg/l |
| 3 Apr 2024, 13:12 | 1.49 | 1.49 mg/l |
| 12 Mar 2024, 10:17 | 3.78 | 3.78 mg/l |
| 1 Feb 2024, 10:39 | 3.49 | 3.49 mg/l |
| 2 Jan 2024, 09:12 | 2.29 | 2.29 mg/l |
| 5 Dec 2023, 09:13 | 2.29 | 2.29 mg/l |
| 2 Nov 2023, 08:28 | 4.09 | 4.09 mg/l |
| 2 Oct 2023, 09:10 | 3.03 | 3.03 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.04 mg/l
Sampled 22 Apr 2026, 5 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Apr 2026, 10:10 | 0.04 | 0.04 mg/l |
| 6 Mar 2026, 07:38 | 0.018 | 0.018 mg/l |
| 5 Feb 2026, 12:40 | 0.089 | 0.089 mg/l |
| 5 Jan 2026, 13:11 | 1.7 | 1.7 mg/l |
| 11 Dec 2025, 13:05 | 0.07 | 0.07 mg/l |
| 11 Nov 2025, 09:44 | 0.024 | 0.024 mg/l |
| 6 Oct 2025, 14:25 | 0.026 | 0.026 mg/l |
| 18 Sep 2025, 13:40 | 0.042 | 0.042 mg/l |
| 28 Aug 2025, 11:28 | 0.18 | 0.18 mg/l |
| 9 Jul 2025, 14:36 | 0.067 | 0.067 mg/l |
| 16 Jun 2025, 11:01 | 0.037 | 0.037 mg/l |
| 13 May 2025, 12:18 | 0.23 | 0.23 mg/l |
| 9 Apr 2025, 12:27 | 0.28 | 0.28 mg/l |
| 19 Mar 2025, 12:48 | 0.056 | 0.056 mg/l |
| 5 Feb 2025, 07:46 | 0.011 | 0.011 mg/l |
| 10 Jan 2025, 12:36 | 0.03 | 0.03 mg/l |
| 2 Dec 2024, 09:55 | 0.024 | 0.024 mg/l |
| 6 Nov 2024, 09:16 | 0.012 | 0.012 mg/l |
| 4 Oct 2024, 10:32 | 0.034 | 0.034 mg/l |
| 20 Sep 2024, 11:56 | 0.025 | 0.025 mg/l |
| 1 Aug 2024, 11:03 | 0.034 | 0.034 mg/l |
| 1 Jul 2024, 10:39 | 0.041 | 0.041 mg/l |
| 11 Jun 2024, 09:54 | 0.02 | 0.02 mg/l |
| 1 May 2024, 13:47 | 0.012 | 0.012 mg/l |
| 3 Apr 2024, 13:12 | 0.014 | 0.014 mg/l |
| 12 Mar 2024, 10:17 | 0.016 | 0.016 mg/l |
| 1 Feb 2024, 10:39 | 0.022 | 0.022 mg/l |
| 2 Jan 2024, 09:12 | 0.024 | 0.024 mg/l |
| 5 Dec 2023, 09:13 | 0.012 | 0.012 mg/l |
| 2 Nov 2023, 08:28 | 0.018 | 0.018 mg/l |
| 2 Oct 2023, 09:10 | 0.03 | 0.03 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
499 µS/cm
Sampled 22 Apr 2026, 5 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Apr 2026, 10:10 | 499 | 499 µS/cm |
| 6 Mar 2026, 07:38 | 257 | 257 µS/cm |
| 5 Feb 2026, 12:40 | 335 | 335 µS/cm |
| 5 Jan 2026, 13:11 | 675 | 675 µS/cm |
| 11 Dec 2025, 13:05 | 288 | 288 µS/cm |
| 11 Nov 2025, 09:44 | 454 | 454 µS/cm |
| 6 Oct 2025, 14:25 | 484 | 484 µS/cm |
| 18 Sep 2025, 13:40 | 415 | 415 µS/cm |
| 28 Aug 2025, 11:28 | 528 | 528 µS/cm |
| 9 Jul 2025, 14:36 | 587 | 587 µS/cm |
| 16 Jun 2025, 11:01 | 457 | 457 µS/cm |
| 13 May 2025, 12:18 | 396 | 396 µS/cm |
| 9 Apr 2025, 12:27 | 526 | 526 µS/cm |
| 19 Mar 2025, 12:48 | 357 | 357 µS/cm |
| 5 Feb 2025, 07:46 | 422 | 422 µS/cm |
| 10 Jan 2025, 12:36 | 531 | 531 µS/cm |
| 2 Dec 2024, 09:55 | 371 | 371 µS/cm |
| 6 Nov 2024, 09:16 | 510 | 510 µS/cm |
| 4 Oct 2024, 10:32 | 475 | 475 µS/cm |
| 20 Sep 2024, 11:56 | 512 | 512 µS/cm |
| 1 Aug 2024, 11:03 | 536 | 536 µS/cm |
| 1 Jul 2024, 10:39 | 537 | 537 µS/cm |
| 11 Jun 2024, 09:54 | 450 | 450 µS/cm |
| 1 May 2024, 13:47 | 555 | 555 µS/cm |
| 3 Apr 2024, 13:12 | 370 | 370 µS/cm |
| 12 Mar 2024, 10:17 | 412 | 412 µS/cm |
| 1 Feb 2024, 10:39 | 290 | 290 µS/cm |
| 2 Jan 2024, 09:12 | 264 | 264 µS/cm |
| 5 Dec 2023, 09:13 | 411 | 411 µS/cm |
| 2 Nov 2023, 08:28 | 337 | 337 µS/cm |
| 2 Oct 2023, 09:10 | 462 | 462 µS/cm |
Everything measured here
110 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 110 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 31 | Oct 2023 – Apr 2026 | 98.6% 22 Apr 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 31 | Oct 2023 – Apr 2026 | 11.5 mg/l 22 Apr 2026 |
| Temperature of Water 0076 | River water | 31 | Oct 2023 – Apr 2026 | 8.7 °C 22 Apr 2026 |
| pH 0061 | River water | 31 | Oct 2023 – Apr 2026 | 8.02 22 Apr 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 31 | Oct 2023 – Apr 2026 | 0.31 mg/l 22 Apr 2026 |
| Nitrate as N 0117 | River water | 31 | Oct 2023 – Apr 2026 | 2.57 mg/l 22 Apr 2026 |
| Orthophosphate, reactive as P 0180 | River water | 31 | Oct 2023 – Apr 2026 | 0.04 mg/l 22 Apr 2026 |
| Conductivity at 25 C 0077 | River water | 31 | Oct 2023 – Apr 2026 | 499 µS/cm 22 Apr 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Jan 2026 – Jan 2026 | below 0.002 µg/l 5 Jan 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Jun 2025 – Jan 2026 | below 0.004 µg/l 5 Jan 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 5 Jan 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Jun 2025 – Jan 2026 | 0.091 µg/l 5 Jan 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 5 Jan 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 5 Jan 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 5 Jan 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 5 Jan 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 5 Jan 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 31 | Oct 2023 – Apr 2026 | 150 mg/l 22 Apr 2026 |
| Aluminium, Dissolved 6037 | River water | 4 | Apr 2025 – Jan 2026 | 41 µg/l 5 Jan 2026 |
| Aminomethylphosphonic acid 7125 | River water | 12 | Apr 2025 – Mar 2026 | below 0.1 µg/l 6 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 31 | Oct 2023 – Apr 2026 | 0.00514 mg/l 22 Apr 2026 |
| Barium, Dissolved 9446 | River water | 4 | Apr 2025 – Jan 2026 | 83 µg/l 5 Jan 2026 |
| Boron, Dissolved 9447 | River water | 4 | Apr 2025 – Jan 2026 | below 100 µg/l 5 Jan 2026 |
| Cadmium, Dissolved 0106 | River water | 4 | Apr 2025 – Jan 2026 | 0.023 µg/l 5 Jan 2026 |
| Calcium, Dissolved 0239 | River water | 4 | Apr 2025 – Jan 2026 | 45 mg/l 5 Jan 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 21 | Jul 2024 – Apr 2026 | 11 mg/l 22 Apr 2026 |
| Chloride 0172 | River water | 31 | Oct 2023 – Apr 2026 | 22 mg/l 22 Apr 2026 |
| Chromium, Dissolved 3409 | River water | 4 | Apr 2025 – Jan 2026 | 0.55 µg/l 5 Jan 2026 |
| Copper : BLM Bioavailable 4821 | River water | 3 | Apr 2025 – Jan 2026 | 0.14 µg/l 5 Jan 2026 |
| Copper, Dissolved 6450 | River water | 4 | Apr 2025 – Jan 2026 | 7 µg/l 5 Jan 2026 |
| eDNA Report 3047 | River water | 4 | May 2024 – Jan 2025 | 1 text result 10 Jan 2025 |
| Environmental DNA Filtration 3064 | River water | 3 | May 2024 – Oct 2024 | DNA Stored 4 Oct 2024 |
| Flow Type 2896 | River water | 28 | Oct 2023 – Apr 2026 | Moderate Flow 22 Apr 2026 |
| Glyphosate 3007 | River water | 12 | Apr 2025 – Mar 2026 | below 0.1 µg/l 6 Mar 2026 |
| Hardness, Calcium 0163 | River water | 4 | Apr 2025 – Jan 2026 | 112 mg/l 5 Jan 2026 |
| Hardness, Total as CaCO3 0158 | River water | 4 | Apr 2025 – Jan 2026 | 178 mg/l 5 Jan 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Iron, Dissolved 6460 | River water | 4 | Apr 2025 – Jan 2026 | 200 µg/l 5 Jan 2026 |
| Lead : BLM Bioavailable 3377 | River water | 3 | Apr 2025 – Jan 2026 | 0.01 µg/l 5 Jan 2026 |
| Lead, Dissolved 0052 | River water | 4 | Apr 2025 – Jan 2026 | 0.2 µg/l 5 Jan 2026 |
| Lithium, Dissolved 4201 | River water | 4 | Apr 2025 – Jan 2026 | below 100 µg/l 5 Jan 2026 |
| Magnesium, Dissolved 0235 | River water | 4 | Apr 2025 – Jan 2026 | 16 mg/l 5 Jan 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 3 | Apr 2025 – Jan 2026 | 100 µg/l 5 Jan 2026 |
| Manganese, Dissolved 6458 | River water | 4 | Apr 2025 – Jan 2026 | 200 µg/l 5 Jan 2026 |
| Mitochondrial marker : Fish 12S 2857 | River water | 4 | May 2024 – Jan 2025 | Present 10 Jan 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Jun 2025 – Jan 2026 | below 0.002 µg/l 5 Jan 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Jun 2025 – Jan 2026 | below 0.002 µg/l 5 Jan 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 3 | Apr 2025 – Jan 2026 | 0.4 µg/l 5 Jan 2026 |
| Nickel, Dissolved 3410 | River water | 4 | Apr 2025 – Jan 2026 | 2.7 µg/l 5 Jan 2026 |
| Nitrite as N 0118 | River water | 31 | Oct 2023 – Apr 2026 | 0.035 mg/l 22 Apr 2026 |
| Nitrogen, Total as N 9686 | River water | 31 | Oct 2023 – Apr 2026 | 7.8 mg/l 22 Apr 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 31 | Oct 2023 – Apr 2026 | 2.6 mg/l 22 Apr 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluorobutanoic acid 2995 | River water | 2 | Jun 2025 – Jan 2026 | 0.0012 µg/l 5 Jan 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluorodecanoic acid 8892 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Jun 2025 – Jan 2026 | below 0.005 µg/l 5 Jan 2026 |
| Perfluorododecanoic acid 8894 | River water | 2 | Jun 2025 – Jan 2026 | below 0.002 µg/l 5 Jan 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluorohexanoic acid 8888 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluorononanoic acid 8891 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Jun 2025 – Jan 2026 | below 0.002 µg/l 5 Jan 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | Jun 2025 – Jan 2026 | 0.00052 µg/l 5 Jan 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluorooctanoic acid 8890 | River water | 2 | Jun 2025 – Jan 2026 | 0.00072 µg/l 5 Jan 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | Jun 2025 – Jan 2026 | below 0.0005 µg/l 5 Jan 2026 |
| Perfluoropentanoic acid 8887 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Jun 2025 – Jan 2026 | below 0.006 µg/l 5 Jan 2026 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Jun 2025 – Jan 2026 | below 0.002 µg/l 5 Jan 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Jun 2025 – Jan 2026 | below 0.004 µg/l 5 Jan 2026 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Jun 2025 – Jan 2026 | below 0.001 µg/l 5 Jan 2026 |
| Phosphorus, Total as P 0348 | River water | 31 | Oct 2023 – Apr 2026 | 0.55 mg/l 22 Apr 2026 |
| Potassium, Dissolved 0209 | River water | 4 | Apr 2025 – Jan 2026 | 31 mg/l 5 Jan 2026 |
| Preparation: DNA 5923 | River water | 3 | May 2024 – Oct 2024 | Done 4 Oct 2024 |
| Silica, reactive as SiO2 0182 | River water | 31 | Oct 2023 – Apr 2026 | 4.9 mg/l 22 Apr 2026 |
| Sodium, Dissolved 0205 | River water | 4 | Apr 2025 – Jan 2026 | 20 mg/l 5 Jan 2026 |
| Solids, Suspended at 105 C 0135 | River water | 31 | Oct 2023 – Apr 2026 | 220 mg/l 22 Apr 2026 |
| Strontium, Filtered 6693 | River water | 4 | Apr 2025 – Jan 2026 | 160 µg/l 5 Jan 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 4 | Apr 2025 – Jan 2026 | 24 mg/l 5 Jan 2026 |
| Trifluoroacetic acid 2872 | River water | 1 | Jan 2026 – Jan 2026 | 1.9 µg/l 5 Jan 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 3 | Apr 2025 – Jan 2026 | 2.1 µg/l 5 Jan 2026 |
| Zinc, Dissolved 3408 | River water | 4 | Apr 2025 – Jan 2026 | 16 µg/l 5 Jan 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.