Fleet Brook above Fleet sewage treatment works
EA name: FLEET BROOK ABOVE FLEET STW
Environment Agency sampling point TH-PLDR0016 · 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
- 10 Jul 2026, 14:423 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 32 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 Environmental monitoring statutory (EU directives)
- Where
- National Grid 480500, 156500As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Fleet Brook
- River, by the map
- Fleet BrookPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Bramshill On the River Hart · 7.6 km along the river
- Nearest gauge upstream
- Kings Road Bridge On the Fleet Brook · 3.5 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (32 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
47.4%
Sampled 10 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 14:42 | 47.4 | 47.4% |
| 25 Jun 2026, 09:21 | 33.3 | 33.3% |
| 21 May 2026, 10:46 | 69.6 | 69.6% |
| 10 Apr 2026, 10:54 | 89 | 89% |
| 17 Mar 2026, 10:31 | 90.6 | 90.6% |
| 12 Feb 2026, 09:23 | 85.5 | 85.5% |
| 29 Jan 2026, 13:07 | 86.7 | 86.7% |
| 10 Dec 2025, 11:13 | 80.9 | 80.9% |
| 13 Nov 2025, 10:28 | 69.3 | 69.3% |
| 8 Oct 2025, 09:18 | 68.3 | 68.3% |
| 11 Sep 2025, 12:33 | 77.4 | 77.4% |
| 1 Aug 2025, 09:14 | 75.7 | 75.7% |
| 17 Jul 2025, 09:38 | 53.8 | 53.8% |
| 25 Jun 2025, 09:47 | 60.3 | 60.3% |
| 13 May 2025, 10:27 | 70.9 | 70.9% |
| 23 Apr 2025, 11:23 | 78.9 | 78.9% |
| 5 Mar 2025, 12:43 | 91.5 | 91.5% |
| 19 Feb 2025, 13:54 | 94.6 | 94.6% |
| 20 Jan 2025, 10:37 | 92.2 | 92.2% |
| 13 Dec 2024, 12:12 | 86.4 | 86.4% |
| 21 Nov 2024, 11:09 | 82.2 | 82.2% |
| 17 Oct 2024, 10:48 | 78 | 78% |
| 19 Sep 2024, 10:58 | 72.9 | 72.9% |
| 19 Aug 2024, 10:03 | 60.8 | 60.8% |
| 29 Jul 2024, 14:35 | 62.6 | 62.6% |
| 17 Jun 2024, 13:20 | 42.8 | 42.8% |
| 6 Mar 2024, 09:27 | 91.5 | 91.5% |
| 2 Feb 2024, 10:34 | 92.3 | 92.3% |
| 10 Jan 2024, 12:55 | 90.5 | 90.5% |
| 7 Dec 2023, 10:39 | 84.4 | 84.4% |
| 1 Nov 2023, 13:21 | 76.5 | 76.5% |
| 2 Oct 2023, 10:17 | 65.3 | 65.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
4.27 mg/l
Sampled 10 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 14:42 | 4.27 | 4.27 mg/l |
| 25 Jun 2026, 09:21 | 3.01 | 3.01 mg/l |
| 21 May 2026, 10:46 | 7.12 | 7.12 mg/l |
| 10 Apr 2026, 10:54 | 9.82 | 9.82 mg/l |
| 17 Mar 2026, 10:31 | 10.3 | 10.3 mg/l |
| 12 Feb 2026, 09:23 | 10 | 10 mg/l |
| 29 Jan 2026, 13:07 | 10.8 | 10.8 mg/l |
| 10 Dec 2025, 11:13 | 9.11 | 9.11 mg/l |
| 13 Nov 2025, 10:28 | 7.38 | 7.38 mg/l |
| 8 Oct 2025, 09:18 | 7.34 | 7.34 mg/l |
| 11 Sep 2025, 12:33 | 7.73 | 7.73 mg/l |
| 1 Aug 2025, 09:14 | 7.27 | 7.27 mg/l |
| 17 Jul 2025, 09:38 | 5.2 | 5.2 mg/l |
| 25 Jun 2025, 09:47 | 5.96 | 5.96 mg/l |
| 13 May 2025, 10:27 | 7.26 | 7.26 mg/l |
| 23 Apr 2025, 11:23 | 8.54 | 8.54 mg/l |
| 5 Mar 2025, 12:43 | 11.3 | 11.3 mg/l |
| 19 Feb 2025, 13:54 | 12.1 | 12.1 mg/l |
| 20 Jan 2025, 10:37 | 12 | 12 mg/l |
| 13 Dec 2024, 12:12 | 10.6 | 10.6 mg/l |
| 21 Nov 2024, 11:09 | 10.6 | 10.6 mg/l |
| 17 Oct 2024, 10:48 | 8.04 | 8.04 mg/l |
| 19 Sep 2024, 10:58 | 7.22 | 7.22 mg/l |
| 19 Aug 2024, 10:03 | 6.26 | 6.26 mg/l |
| 29 Jul 2024, 14:35 | 6.01 | 6.01 mg/l |
| 17 Jun 2024, 13:20 | 4.42 | 4.42 mg/l |
| 6 Mar 2024, 09:27 | 11.3 | 11.3 mg/l |
| 2 Feb 2024, 10:34 | 11.1 | 11.1 mg/l |
| 10 Jan 2024, 12:55 | 12.2 | 12.2 mg/l |
| 7 Dec 2023, 10:39 | 10.5 | 10.5 mg/l |
| 1 Nov 2023, 13:21 | 8.26 | 8.26 mg/l |
| 2 Oct 2023, 10:17 | 6.48 | 6.48 mg/l |
Water temperature
code 0076 · °C
20.3 °C
Sampled 10 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 14:42 | 20.3 | 20.3 °C |
| 25 Jun 2026, 09:21 | 20.1 | 20.1 °C |
| 21 May 2026, 10:46 | 14.2 | 14.2 °C |
| 10 Apr 2026, 10:54 | 10.9 | 10.9 °C |
| 17 Mar 2026, 10:31 | 9.5 | 9.5 °C |
| 12 Feb 2026, 09:23 | 8.4 | 8.4 °C |
| 29 Jan 2026, 13:07 | 5.8 | 5.8 °C |
| 10 Dec 2025, 11:13 | 10 | 10 °C |
| 13 Nov 2025, 10:28 | 12.4 | 12.4 °C |
| 8 Oct 2025, 09:18 | 12 | 12 °C |
| 11 Sep 2025, 12:33 | 15.3 | 15.3 °C |
| 1 Aug 2025, 09:14 | 17.2 | 17.2 °C |
| 17 Jul 2025, 09:38 | 16.9 | 16.9 °C |
| 25 Jun 2025, 09:47 | 15.8 | 15.8 °C |
| 13 May 2025, 10:27 | 14.2 | 14.2 °C |
| 23 Apr 2025, 11:23 | 11.7 | 11.7 °C |
| 5 Mar 2025, 12:43 | 6.1 | 6.1 °C |
| 19 Feb 2025, 13:54 | 4.8 | 4.8 °C |
| 20 Jan 2025, 10:37 | 4.3 | 4.3 °C |
| 13 Dec 2024, 12:12 | 6.5 | 6.5 °C |
| 21 Nov 2024, 11:09 | 4.4 | 4.4 °C |
| 17 Oct 2024, 10:48 | 13.9 | 13.9 °C |
| 19 Sep 2024, 10:58 | 15.7 | 15.7 °C |
| 19 Aug 2024, 10:03 | 13.9 | 13.9 °C |
| 29 Jul 2024, 14:35 | 17.2 | 17.2 °C |
| 17 Jun 2024, 13:20 | 13.8 | 13.8 °C |
| 6 Mar 2024, 09:27 | 6.2 | 6.2 °C |
| 2 Feb 2024, 10:34 | 7.3 | 7.3 °C |
| 10 Jan 2024, 12:55 | 3 | 3 °C |
| 7 Dec 2023, 10:39 | 6 | 6 °C |
| 1 Nov 2023, 13:21 | 11.8 | 11.8 °C |
| 2 Oct 2023, 10:17 | 15.6 | 15.6 °C |
pH
code 0061
6.93
Sampled 10 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 14:42 | 6.93 | 6.93 |
| 25 Jun 2026, 09:21 | 6.76 | 6.76 |
| 21 May 2026, 10:46 | 7.07 | 7.07 |
| 10 Apr 2026, 10:54 | 7.47 | 7.47 |
| 17 Mar 2026, 10:31 | 7.44 | 7.44 |
| 12 Feb 2026, 09:23 | 7.1 | 7.1 |
| 29 Jan 2026, 13:07 | 7.12 | 7.12 |
| 10 Dec 2025, 11:13 | 7.19 | 7.19 |
| 13 Nov 2025, 10:28 | 6.97 | 6.97 |
| 8 Oct 2025, 09:18 | 6.8 | 6.8 |
| 11 Sep 2025, 12:33 | 7.23 | 7.23 |
| 1 Aug 2025, 09:14 | 7.63 | 7.63 |
| 17 Jul 2025, 09:38 | 6.76 | 6.76 |
| 25 Jun 2025, 09:47 | 6.65 | 6.65 |
| 13 May 2025, 10:27 | 7.22 | 7.22 |
| 23 Apr 2025, 11:23 | 7.25 | 7.25 |
| 5 Mar 2025, 12:43 | 7.52 | 7.52 |
| 19 Feb 2025, 13:54 | 7.47 | 7.47 |
| 20 Jan 2025, 10:37 | 7.51 | 7.51 |
| 13 Dec 2024, 12:12 | 7.39 | 7.39 |
| 21 Nov 2024, 11:09 | 7.26 | 7.26 |
| 17 Oct 2024, 10:48 | 7.2 | 7.2 |
| 19 Sep 2024, 10:58 | 6.81 | 6.81 |
| 19 Aug 2024, 10:03 | 6.93 | 6.93 |
| 29 Jul 2024, 14:35 | 6.82 | 6.82 |
| 17 Jun 2024, 13:20 | 6.36 | 6.36 |
| 6 Mar 2024, 09:27 | 7.59 | 7.59 |
| 2 Feb 2024, 10:34 | 7.73 | 7.73 |
| 10 Jan 2024, 12:55 | 7.41 | 7.41 |
| 7 Dec 2023, 10:39 | 7.28 | 7.28 |
| 1 Nov 2023, 13:21 | 7.17 | 7.17 |
| 2 Oct 2023, 10:17 | 7.07 | 7.07 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 10 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 14:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2026, 09:21 | 0.12 | 0.12 mg/l |
| 21 May 2026, 10:46 | 0.084 | 0.084 mg/l |
| 10 Apr 2026, 10:54 | 0.034 | 0.034 mg/l |
| 17 Mar 2026, 10:31 | 0.041 | 0.041 mg/l |
| 12 Feb 2026, 09:23 | 0.037 | 0.037 mg/l |
| 29 Jan 2026, 13:07 | 0.035 | 0.035 mg/l |
| 10 Dec 2025, 11:13 | 0.063 | 0.063 mg/l |
| 13 Nov 2025, 10:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2025, 09:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Sep 2025, 12:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2025, 09:14 | 0.037 | 0.037 mg/l |
| 17 Jul 2025, 09:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2025, 09:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2025, 10:27 | 0.069 | 0.069 mg/l |
| 5 Mar 2025, 12:43 | 0.14 | 0.14 mg/l |
| 19 Feb 2025, 13:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jan 2025, 10:37 | 0.057 | 0.057 mg/l |
| 13 Dec 2024, 12:12 | 0.056 | 0.056 mg/l |
| 21 Nov 2024, 11:09 | 0.074 | 0.074 mg/l |
| 17 Oct 2024, 10:48 | 0.036 | 0.036 mg/l |
| 19 Sep 2024, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Aug 2024, 10:03 | 0.062 | 0.062 mg/l |
| 29 Jul 2024, 14:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 13:20 | 0.16 | 0.16 mg/l |
| 6 Mar 2024, 09:27 | 0.032 | 0.032 mg/l |
| 2 Feb 2024, 10:34 | 0.042 | 0.042 mg/l |
| 10 Jan 2024, 12:55 | 0.11 | 0.11 mg/l |
| 7 Dec 2023, 10:39 | 0.084 | 0.084 mg/l |
| 1 Nov 2023, 13:21 | 0.052 | 0.052 mg/l |
| 2 Oct 2023, 10:17 | 0.055 | 0.055 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.256 mg/l
Sampled 10 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 14:42 | 0.256 | 0.256 mg/l |
| 25 Jun 2026, 09:21 | 0.27 | 0.27 mg/l |
| 21 May 2026, 10:46 | 0.244 | 0.244 mg/l |
| 10 Apr 2026, 10:54 | <0.196 | below 0.196 mg/l (not detected above this) |
| 17 Mar 2026, 10:31 | 0.506 | 0.506 mg/l |
| 12 Feb 2026, 09:23 | 0.736 | 0.736 mg/l |
| 29 Jan 2026, 13:07 | 0.836 | 0.836 mg/l |
| 10 Dec 2025, 11:13 | 0.523 | 0.523 mg/l |
| 13 Nov 2025, 10:28 | 0.276 | 0.276 mg/l |
| 8 Oct 2025, 09:18 | <0.196 | below 0.196 mg/l (not detected above this) |
| 11 Sep 2025, 12:33 | <0.196 | below 0.196 mg/l (not detected above this) |
| 1 Aug 2025, 09:14 | <0.196 | below 0.196 mg/l (not detected above this) |
| 17 Jul 2025, 09:38 | <0.196 | below 0.196 mg/l (not detected above this) |
| 25 Jun 2025, 09:47 | 0.216 | 0.216 mg/l |
| 13 May 2025, 10:27 | 0.264 | 0.264 mg/l |
| 5 Mar 2025, 12:43 | 1.2 | 1.2 mg/l |
| 19 Feb 2025, 13:54 | 1.2 | 1.2 mg/l |
| 20 Jan 2025, 10:37 | 2.09 | 2.09 mg/l |
| 13 Dec 2024, 12:12 | 1.29 | 1.29 mg/l |
| 21 Nov 2024, 11:09 | 0.595 | 0.595 mg/l |
| 17 Oct 2024, 10:48 | 0.62 | 0.62 mg/l |
| 19 Sep 2024, 10:58 | 0.206 | 0.206 mg/l |
| 19 Aug 2024, 10:03 | <0.196 | below 0.196 mg/l (not detected above this) |
| 29 Jul 2024, 14:35 | <0.196 | below 0.196 mg/l (not detected above this) |
| 17 Jun 2024, 13:20 | <0.196 | below 0.196 mg/l (not detected above this) |
| 6 Mar 2024, 09:27 | 1.9 | 1.9 mg/l |
| 2 Feb 2024, 10:34 | 2.89 | 2.89 mg/l |
| 10 Jan 2024, 12:55 | 1.49 | 1.49 mg/l |
| 7 Dec 2023, 10:39 | 1.08 | 1.08 mg/l |
| 1 Nov 2023, 13:21 | 0.319 | 0.319 mg/l |
| 2 Oct 2023, 10:17 | 0.213 | 0.213 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.11 mg/l
Sampled 10 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 14:42 | 0.11 | 0.11 mg/l |
| 25 Jun 2026, 09:21 | 0.12 | 0.12 mg/l |
| 21 May 2026, 10:46 | 0.052 | 0.052 mg/l |
| 10 Apr 2026, 10:54 | 0.029 | 0.029 mg/l |
| 17 Mar 2026, 10:31 | 0.019 | 0.019 mg/l |
| 12 Feb 2026, 09:23 | 0.049 | 0.049 mg/l |
| 29 Jan 2026, 13:07 | 0.024 | 0.024 mg/l |
| 10 Dec 2025, 11:13 | 0.035 | 0.035 mg/l |
| 13 Nov 2025, 10:28 | 0.036 | 0.036 mg/l |
| 8 Oct 2025, 09:18 | 0.037 | 0.037 mg/l |
| 11 Sep 2025, 12:33 | 0.052 | 0.052 mg/l |
| 1 Aug 2025, 09:14 | 0.11 | 0.11 mg/l |
| 17 Jul 2025, 09:38 | 0.078 | 0.078 mg/l |
| 25 Jun 2025, 09:47 | 0.067 | 0.067 mg/l |
| 13 May 2025, 10:27 | 0.049 | 0.049 mg/l |
| 5 Mar 2025, 12:43 | 0.016 | 0.016 mg/l |
| 19 Feb 2025, 13:54 | 0.02 | 0.02 mg/l |
| 20 Jan 2025, 10:37 | 0.032 | 0.032 mg/l |
| 13 Dec 2024, 12:12 | 0.031 | 0.031 mg/l |
| 21 Nov 2024, 11:09 | 0.038 | 0.038 mg/l |
| 17 Oct 2024, 10:48 | 0.061 | 0.061 mg/l |
| 19 Sep 2024, 10:58 | 0.037 | 0.037 mg/l |
| 19 Aug 2024, 10:03 | 0.045 | 0.045 mg/l |
| 29 Jul 2024, 14:35 | 0.088 | 0.088 mg/l |
| 17 Jun 2024, 13:20 | <0.01 | below 0.01 mg/l (not detected above this) |
| 6 Mar 2024, 09:27 | 0.022 | 0.022 mg/l |
| 2 Feb 2024, 10:34 | 0.016 | 0.016 mg/l |
| 10 Jan 2024, 12:55 | 0.035 | 0.035 mg/l |
| 7 Dec 2023, 10:39 | 0.044 | 0.044 mg/l |
| 1 Nov 2023, 13:21 | 0.036 | 0.036 mg/l |
| 2 Oct 2023, 10:17 | 0.079 | 0.079 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
319 µS/cm
Sampled 10 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 14:42 | 319 | 319 µS/cm |
| 25 Jun 2026, 09:21 | 326 | 326 µS/cm |
| 21 May 2026, 10:46 | 378 | 378 µS/cm |
| 10 Apr 2026, 10:54 | 377 | 377 µS/cm |
| 17 Mar 2026, 10:31 | 364 | 364 µS/cm |
| 12 Feb 2026, 09:23 | 298 | 298 µS/cm |
| 29 Jan 2026, 13:07 | 315 | 315 µS/cm |
| 10 Dec 2025, 11:13 | 427 | 427 µS/cm |
| 13 Nov 2025, 10:28 | 416 | 416 µS/cm |
| 8 Oct 2025, 09:18 | 382 | 382 µS/cm |
| 11 Sep 2025, 12:33 | 418 | 418 µS/cm |
| 1 Aug 2025, 09:14 | 416 | 416 µS/cm |
| 17 Jul 2025, 09:38 | 304 | 304 µS/cm |
| 25 Jun 2025, 09:47 | 319 | 319 µS/cm |
| 13 May 2025, 10:27 | 370 | 370 µS/cm |
| 23 Apr 2025, 11:23 | 382 | 382 µS/cm |
| 5 Mar 2025, 12:43 | 396 | 396 µS/cm |
| 19 Feb 2025, 13:54 | 398 | 398 µS/cm |
| 20 Jan 2025, 10:37 | 410 | 410 µS/cm |
| 13 Dec 2024, 12:12 | 371 | 371 µS/cm |
| 21 Nov 2024, 11:09 | 358 | 358 µS/cm |
| 17 Oct 2024, 10:48 | 326 | 326 µS/cm |
| 19 Sep 2024, 10:58 | 333 | 333 µS/cm |
| 19 Aug 2024, 10:03 | 317 | 317 µS/cm |
| 29 Jul 2024, 14:35 | 320 | 320 µS/cm |
| 17 Jun 2024, 13:20 | 440 | 440 µS/cm |
| 6 Mar 2024, 09:27 | 369 | 369 µS/cm |
| 2 Feb 2024, 10:34 | 478 | 478 µS/cm |
| 10 Jan 2024, 12:55 | 357 | 357 µS/cm |
| 7 Dec 2023, 10:39 | 408 | 408 µS/cm |
| 1 Nov 2023, 13:21 | 331 | 331 µS/cm |
| 2 Oct 2023, 10:17 | 345 | 345 µS/cm |
Everything measured here
61 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 61 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 32 | Oct 2023 – Jul 2026 | 47.4% 10 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 32 | Oct 2023 – Jul 2026 | 4.27 mg/l 10 Jul 2026 |
| Temperature of Water 0076 | River water | 32 | Oct 2023 – Jul 2026 | 20.3 °C 10 Jul 2026 |
| pH 0061 | River water | 32 | Oct 2023 – Jul 2026 | 6.93 10 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 31 | Oct 2023 – Jul 2026 | below 0.03 mg/l 10 Jul 2026 |
| Nitrate as N 0117 | River water | 31 | Oct 2023 – Jul 2026 | 0.256 mg/l 10 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 31 | Oct 2023 – Jul 2026 | 0.11 mg/l 10 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 32 | Oct 2023 – Jul 2026 | 319 µS/cm 10 Jul 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 20 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Feb 2024 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | Oct 2023 – Jan 2025 | below 0.004 µg/l 20 Jan 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Jan 2025 – Jan 2025 | below 0.005 µg/l 20 Jan 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | Oct 2023 – Jan 2025 | 0.0042 µg/l 20 Jan 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 31 | Oct 2023 – Jul 2026 | 68 mg/l 10 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 31 | Oct 2023 – Jul 2026 | below 0.0001 mg/l 10 Jul 2026 |
| BOD : 5 Day ATU 0085 | River water | 31 | Oct 2023 – Jul 2026 | below 3 mg/l 10 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 20 Jan 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 20 Jan 2025 |
| Nitrite as N 0118 | River water | 31 | Oct 2023 – Jul 2026 | below 0.004 mg/l 10 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 31 | Oct 2023 – Jul 2026 | 0.26 mg/l 10 Jul 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | Oct 2023 – Jan 2025 | 0.0014 µg/l 20 Jan 2025 |
| Perfluorobutanoic acid 2995 | River water | 3 | Oct 2023 – Jan 2025 | 0.0021 µg/l 20 Jan 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 20 Jan 2025 |
| Perfluorodecanoic acid 8892 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 20 Jan 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | Oct 2023 – Jan 2025 | below 0.005 µg/l 20 Jan 2025 |
| Perfluorododecanoic acid 8894 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 20 Jan 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluoroheptanoic acid 8889 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | Oct 2023 – Jan 2025 | 0.00069 µg/l 20 Jan 2025 |
| Perfluorohexanoic acid 8888 | River water | 3 | Oct 2023 – Jan 2025 | 0.001 µg/l 20 Jan 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluorononanoic acid 8891 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 20 Jan 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | Oct 2023 – Jan 2025 | 0.00069 µg/l 20 Jan 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | Oct 2023 – Jan 2025 | 0.00067 µg/l 20 Jan 2025 |
| Perfluorooctanoic acid 8890 | River water | 3 | Oct 2023 – Jan 2025 | 0.0013 µg/l 20 Jan 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 20 Jan 2025 |
| Perfluoropentanoic acid 8887 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 20 Jan 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Feb 2024 – Jan 2025 | below 0.006 µg/l 20 Jan 2025 |
| Perfluorotridecanoic acid 2955 | River water | 3 | Oct 2023 – Jan 2025 | below 0.005 µg/l 20 Jan 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | Oct 2023 – Jan 2025 | below 0.004 µg/l 20 Jan 2025 |
| Perfluoroundecanoic acid 8893 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 20 Jan 2025 |
| Phosphorus, Total as P 0348 | River water | 12 | Aug 2025 – Jul 2026 | 0.13 mg/l 10 Jul 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.