Mean Brook above the confluence with Waterside Brook
EA name: SSN1334 MEAN BK PTC WATERSIDE BK (also listed as “SSN1334 MEAN BROOK PTC WATERSIDE BROOK”)
Environment Agency sampling point NW-88015559 · 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
- 16 Mar 2026, 09:477 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
- 31 since 30 Jan 2024 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 371330, 423523As 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
- Not placedTwo watercourses within reach (0 m and 11 m) and no name to choose by. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (31 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98.9%
Sampled 16 Mar 2026, 7 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Mar 2026, 09:47 | 98.9 | 98.9% |
| 12 Feb 2026, 14:06 | 98.4 | 98.4% |
| 29 Jan 2026, 12:51 | 97.7 | 97.7% |
| 3 Dec 2025, 09:54 | 102.1 | 102.1% |
| 5 Nov 2025, 09:43 | 101.1 | 101.1% |
| 3 Oct 2025, 10:27 | 94.1 | 94.1% |
| 11 Sep 2025, 10:13 | 93 | 93% |
| 6 Aug 2025, 08:55 | 94.3 | 94.3% |
| 10 Jul 2025, 12:40 | 97.7 | 97.7% |
| 26 Jun 2025, 10:50 | 98.2 | 98.2% |
| 1 May 2025, 13:19 | 103.8 | 103.8% |
| 3 Apr 2025, 14:52 | 108.3 | 108.3% |
| 13 Mar 2025, 10:51 | 111.3 | 111.3% |
| 10 Feb 2025, 10:33 | 100.6 | 100.6% |
| 14 Jan 2025, 10:41 | 101.7 | 101.7% |
| 5 Dec 2024, 11:03 | 101.3 | 101.3% |
| 6 Nov 2024, 09:48 | 98.6 | 98.6% |
| 2 Oct 2024, 12:45 | 100.2 | 100.2% |
| 4 Sep 2024, 13:50 | 97.3 | 97.3% |
| 1 Aug 2024, 11:38 | 98.5 | 98.5% |
| 2 Jul 2024, 11:13 | 98.2 | 98.2% |
| 11 Jun 2024, 09:40 | 96.9 | 96.9% |
| 7 May 2024, 09:22 | 99.4 | 99.4% |
| 9 Apr 2024, 11:51 | 101.4 | 101.4% |
| 5 Mar 2024, 14:58 | 99.9 | 99.9% |
| 2 Feb 2024, 09:57 | 100.6 | 100.6% |
| 30 Jan 2024, 11:06 | 101.8 | 101.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12 mg/l
Sampled 16 Mar 2026, 7 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Mar 2026, 09:47 | 12 | 12 mg/l |
| 12 Feb 2026, 14:06 | 12.2 | 12.2 mg/l |
| 29 Jan 2026, 12:51 | 12.2 | 12.2 mg/l |
| 3 Dec 2025, 09:54 | 12.7 | 12.7 mg/l |
| 5 Nov 2025, 09:43 | 11 | 11 mg/l |
| 3 Oct 2025, 10:27 | 9.98 | 9.98 mg/l |
| 11 Sep 2025, 10:13 | 10.1 | 10.1 mg/l |
| 6 Aug 2025, 08:55 | 10.1 | 10.1 mg/l |
| 10 Jul 2025, 12:40 | 10 | 10 mg/l |
| 26 Jun 2025, 10:50 | 9.5 | 9.5 mg/l |
| 1 May 2025, 13:19 | 10.6 | 10.6 mg/l |
| 3 Apr 2025, 14:52 | 11.7 | 11.7 mg/l |
| 13 Mar 2025, 10:51 | 13.6 | 13.6 mg/l |
| 10 Feb 2025, 10:33 | 12.5 | 12.5 mg/l |
| 14 Jan 2025, 10:41 | 13.3 | 13.3 mg/l |
| 5 Dec 2024, 11:03 | 12.3 | 12.3 mg/l |
| 6 Nov 2024, 09:48 | 11 | 11 mg/l |
| 2 Oct 2024, 12:45 | 10.9 | 10.9 mg/l |
| 4 Sep 2024, 13:50 | 10.3 | 10.3 mg/l |
| 1 Aug 2024, 11:38 | 9.57 | 9.57 mg/l |
| 2 Jul 2024, 11:13 | 10.5 | 10.5 mg/l |
| 11 Jun 2024, 09:40 | 10.5 | 10.5 mg/l |
| 7 May 2024, 09:22 | 10.6 | 10.6 mg/l |
| 9 Apr 2024, 11:51 | 11.8 | 11.8 mg/l |
| 5 Mar 2024, 14:58 | 12.1 | 12.1 mg/l |
| 2 Feb 2024, 09:57 | 12.4 | 12.4 mg/l |
| 30 Jan 2024, 11:06 | 12.5 | 12.5 mg/l |
Water temperature
code 0076 · °C
7.1 °C
Sampled 16 Mar 2026, 7 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Mar 2026, 09:47 | 7.1 | 7.1 °C |
| 12 Feb 2026, 14:06 | 6.1 | 6.1 °C |
| 29 Jan 2026, 12:51 | 5.7 | 5.7 °C |
| 3 Dec 2025, 09:54 | 6.1 | 6.1 °C |
| 5 Nov 2025, 09:43 | 11.3 | 11.3 °C |
| 3 Oct 2025, 10:27 | 12.6 | 12.6 °C |
| 11 Sep 2025, 10:13 | 11.6 | 11.6 °C |
| 6 Aug 2025, 08:55 | 12.2 | 12.2 °C |
| 10 Jul 2025, 12:40 | 14 | 14 °C |
| 26 Jun 2025, 10:50 | 16.8 | 16.8 °C |
| 1 May 2025, 13:19 | 14.2 | 14.2 °C |
| 3 Apr 2025, 14:52 | 11.7 | 11.7 °C |
| 13 Mar 2025, 10:51 | 6.8 | 6.8 °C |
| 10 Feb 2025, 10:33 | 6 | 6 °C |
| 14 Jan 2025, 10:41 | 4.1 | 4.1 °C |
| 5 Dec 2024, 11:03 | 7 | 7 °C |
| 6 Nov 2024, 09:48 | 10.5 | 10.5 °C |
| 2 Oct 2024, 12:45 | 11.6 | 11.6 °C |
| 4 Sep 2024, 13:50 | 12.6 | 12.6 °C |
| 1 Aug 2024, 11:38 | 16.6 | 16.6 °C |
| 2 Jul 2024, 11:13 | 12.3 | 12.3 °C |
| 11 Jun 2024, 09:40 | 11.8 | 11.8 °C |
| 7 May 2024, 09:22 | 12.4 | 12.4 °C |
| 9 Apr 2024, 11:51 | 8.7 | 8.7 °C |
| 5 Mar 2024, 14:58 | 6.9 | 6.9 °C |
| 2 Feb 2024, 09:57 | 6.2 | 6.2 °C |
| 30 Jan 2024, 11:06 | 6.5 | 6.5 °C |
pH
code 0061
8.09
Sampled 16 Mar 2026, 7 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Mar 2026, 09:47 | 8.09 | 8.09 |
| 12 Feb 2026, 14:06 | 7.84 | 7.84 |
| 29 Jan 2026, 12:51 | 7.98 | 7.98 |
| 3 Dec 2025, 09:54 | 7.8 | 7.8 |
| 5 Nov 2025, 09:43 | 7.85 | 7.85 |
| 3 Oct 2025, 10:27 | 8.25 | 8.25 |
| 11 Sep 2025, 10:13 | 8.2 | 8.2 |
| 6 Aug 2025, 08:55 | 8.1 | 8.1 |
| 10 Jul 2025, 12:40 | 8.07 | 8.07 |
| 26 Jun 2025, 10:50 | 7.6 | 7.6 |
| 1 May 2025, 13:19 | 8.18 | 8.18 |
| 3 Apr 2025, 14:52 | 8.32 | 8.32 |
| 13 Mar 2025, 10:51 | 8.24 | 8.24 |
| 10 Feb 2025, 10:33 | 8.07 | 8.07 |
| 14 Jan 2025, 10:41 | 7.41 | 7.41 |
| 5 Dec 2024, 11:03 | 7.57 | 7.57 |
| 6 Nov 2024, 09:48 | 7.82 | 7.82 |
| 2 Oct 2024, 12:45 | 7.93 | 7.93 |
| 4 Sep 2024, 13:50 | 7.82 | 7.82 |
| 1 Aug 2024, 11:38 | 7.94 | 7.94 |
| 2 Jul 2024, 11:13 | 7.94 | 7.94 |
| 11 Jun 2024, 09:40 | 8.16 | 8.16 |
| 7 May 2024, 09:22 | 7.9 | 7.9 |
| 9 Apr 2024, 11:51 | 8.04 | 8.04 |
| 5 Mar 2024, 14:58 | 7.71 | 7.71 |
| 2 Feb 2024, 09:57 | 7.62 | 7.62 |
| 30 Jan 2024, 11:06 | 8.12 | 8.12 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 16 Mar 2026, 7 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Mar 2026, 09:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Feb 2026, 14:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Jan 2026, 12:51 | 0.099 | 0.099 mg/l |
| 3 Dec 2025, 09:54 | 0.038 | 0.038 mg/l |
| 5 Nov 2025, 09:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Oct 2025, 10:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Sep 2025, 10:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Aug 2025, 08:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jul 2025, 12:40 | 0.038 | 0.038 mg/l |
| 26 Jun 2025, 10:50 | 0.041 | 0.041 mg/l |
| 1 May 2025, 13:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Apr 2025, 14:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Mar 2025, 10:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Feb 2025, 10:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jan 2025, 10:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Dec 2024, 11:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Nov 2024, 09:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2024, 12:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Sep 2024, 13:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2024, 11:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2024, 11:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Jun 2024, 09:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 May 2024, 09:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Apr 2024, 11:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2024, 14:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Feb 2024, 09:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Jan 2024, 11:06 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.546 mg/l
Sampled 16 Mar 2026, 7 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Mar 2026, 09:47 | 0.546 | 0.546 mg/l |
| 12 Feb 2026, 14:06 | 0.916 | 0.916 mg/l |
| 29 Jan 2026, 12:51 | 1.1 | 1.1 mg/l |
| 3 Dec 2025, 09:54 | 0.856 | 0.856 mg/l |
| 5 Nov 2025, 09:43 | 0.676 | 0.676 mg/l |
| 3 Oct 2025, 10:27 | 0.566 | 0.566 mg/l |
| 11 Sep 2025, 10:13 | 0.216 | 0.216 mg/l |
| 6 Aug 2025, 08:55 | 0.206 | 0.206 mg/l |
| 10 Jul 2025, 12:40 | 0.286 | 0.286 mg/l |
| 26 Jun 2025, 10:50 | 0.484 | 0.484 mg/l |
| 1 May 2025, 13:19 | 0.216 | 0.216 mg/l |
| 3 Apr 2025, 14:52 | <0.196 | below 0.196 mg/l (not detected above this) |
| 13 Mar 2025, 10:51 | <0.196 | below 0.196 mg/l (not detected above this) |
| 10 Feb 2025, 10:33 | 0.456 | 0.456 mg/l |
| 14 Jan 2025, 10:41 | 0.856 | 0.856 mg/l |
| 5 Dec 2024, 11:03 | 0.776 | 0.776 mg/l |
| 6 Nov 2024, 09:48 | 0.376 | 0.376 mg/l |
| 2 Oct 2024, 12:45 | 0.496 | 0.496 mg/l |
| 4 Sep 2024, 13:50 | <0.196 | below 0.196 mg/l (not detected above this) |
| 1 Aug 2024, 11:38 | <0.196 | below 0.196 mg/l (not detected above this) |
| 2 Jul 2024, 11:13 | 0.316 | 0.316 mg/l |
| 11 Jun 2024, 09:40 | 0.336 | 0.336 mg/l |
| 7 May 2024, 09:22 | 0.366 | 0.366 mg/l |
| 9 Apr 2024, 11:51 | 0.486 | 0.486 mg/l |
| 5 Mar 2024, 14:58 | 0.676 | 0.676 mg/l |
| 2 Feb 2024, 09:57 | 0.826 | 0.826 mg/l |
| 30 Jan 2024, 11:06 | 0.876 | 0.876 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.013 mg/l
Sampled 16 Mar 2026, 7 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Mar 2026, 09:47 | 0.013 | 0.013 mg/l |
| 12 Feb 2026, 14:06 | 0.015 | 0.015 mg/l |
| 29 Jan 2026, 12:51 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Dec 2025, 09:54 | 0.013 | 0.013 mg/l |
| 5 Nov 2025, 09:43 | 0.017 | 0.017 mg/l |
| 3 Oct 2025, 10:27 | 0.024 | 0.024 mg/l |
| 11 Sep 2025, 10:13 | 0.013 | 0.013 mg/l |
| 6 Aug 2025, 08:55 | 0.026 | 0.026 mg/l |
| 10 Jul 2025, 12:40 | 0.025 | 0.025 mg/l |
| 26 Jun 2025, 10:50 | 0.023 | 0.023 mg/l |
| 1 May 2025, 13:19 | 0.017 | 0.017 mg/l |
| 3 Apr 2025, 14:52 | 0.013 | 0.013 mg/l |
| 13 Mar 2025, 10:51 | 0.014 | 0.014 mg/l |
| 10 Feb 2025, 10:33 | 0.014 | 0.014 mg/l |
| 14 Jan 2025, 10:41 | 0.016 | 0.016 mg/l |
| 5 Dec 2024, 11:03 | 0.016 | 0.016 mg/l |
| 6 Nov 2024, 09:48 | 0.014 | 0.014 mg/l |
| 2 Oct 2024, 12:45 | 0.029 | 0.029 mg/l |
| 4 Sep 2024, 13:50 | <0.01 | below 0.01 mg/l (not detected above this) |
| 1 Aug 2024, 11:38 | 0.014 | 0.014 mg/l |
| 2 Jul 2024, 11:13 | 0.018 | 0.018 mg/l |
| 11 Jun 2024, 09:40 | 0.01 | 0.01 mg/l |
| 7 May 2024, 09:22 | <0.01 | below 0.01 mg/l (not detected above this) |
| 9 Apr 2024, 11:51 | 0.023 | 0.023 mg/l |
| 5 Mar 2024, 14:58 | 0.016 | 0.016 mg/l |
| 2 Feb 2024, 09:57 | 0.016 | 0.016 mg/l |
| 30 Jan 2024, 11:06 | 0.02 | 0.02 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
324 µS/cm
Sampled 16 Mar 2026, 7 months ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Mar 2026, 09:47 | 324 | 324 µS/cm |
| 12 Feb 2026, 14:06 | 142 | 142 µS/cm |
| 29 Jan 2026, 12:51 | 219 | 219 µS/cm |
| 3 Dec 2025, 09:54 | 133 | 133 µS/cm |
| 5 Nov 2025, 09:43 | 122 | 122 µS/cm |
| 3 Oct 2025, 10:27 | 416 | 416 µS/cm |
| 11 Sep 2025, 10:13 | 531 | 531 µS/cm |
| 6 Aug 2025, 08:55 | 506 | 506 µS/cm |
| 10 Jul 2025, 12:40 | 512 | 512 µS/cm |
| 26 Jun 2025, 10:50 | 131 | 131 µS/cm |
| 1 May 2025, 13:19 | 512 | 512 µS/cm |
| 3 Apr 2025, 14:52 | 479 | 479 µS/cm |
| 13 Mar 2025, 10:51 | 434 | 434 µS/cm |
| 10 Feb 2025, 10:33 | 385 | 385 µS/cm |
| 14 Jan 2025, 10:41 | 193 | 193 µS/cm |
| 5 Dec 2024, 11:03 | 126 | 126 µS/cm |
| 6 Nov 2024, 09:48 | 277 | 277 µS/cm |
| 2 Oct 2024, 12:45 | 128 | 128 µS/cm |
| 4 Sep 2024, 13:50 | 286 | 286 µS/cm |
| 1 Aug 2024, 11:38 | 269 | 269 µS/cm |
| 2 Jul 2024, 11:13 | 252 | 252 µS/cm |
| 11 Jun 2024, 09:40 | 162 | 162 µS/cm |
| 7 May 2024, 09:22 | 219 | 219 µS/cm |
| 9 Apr 2024, 11:51 | 111 | 111 µS/cm |
| 5 Mar 2024, 14:58 | 171 | 171 µS/cm |
| 2 Feb 2024, 09:57 | 143 | 143 µS/cm |
| 30 Jan 2024, 11:06 | 175 | 175 µS/cm |
Everything measured here
114 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 114 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 27 | Jan 2024 – Mar 2026 | 98.9% 16 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jan 2024 – Mar 2026 | 12 mg/l 16 Mar 2026 |
| Temperature of Water 0076 | River water | 27 | Jan 2024 – Mar 2026 | 7.1 °C 16 Mar 2026 |
| pH 0061 | River water | 27 | Jan 2024 – Mar 2026 | 8.09 16 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jan 2024 – Mar 2026 | below 0.03 mg/l 16 Mar 2026 |
| Nitrate as N 0117 | River water | 27 | Jan 2024 – Mar 2026 | 0.546 mg/l 16 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Jan 2024 – Mar 2026 | 0.013 mg/l 16 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jan 2024 – Mar 2026 | 324 µS/cm 16 Mar 2026 |
| (Perfluorohexanesulfonyl)[3-(trimethylazaniumyl)propyl]azanide 2890 | River water | 1 | Mar 2026 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Mar 2026 – Mar 2026 | below 0.002 µg/l 16 Mar 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Sep 2025 – Sep 2025 | below 0.001 µg/l 11 Sep 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Mar 2026 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Sep 2025 – Mar 2026 | below 0.004 µg/l 16 Mar 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Mar 2026 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Mar 2026 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Mar 2026 – Mar 2026 | below 0.004 µg/l 16 Mar 2026 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Mar 2026 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Mar 2026 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Sep 2025 – Mar 2026 | 0.0018 µg/l 16 Mar 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Mar 2026 – Mar 2026 | below 0.01 µg/l 16 Mar 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Mar 2026 – Mar 2026 | below 0.004 µg/l 16 Mar 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Mar 2026 – Mar 2026 | below 0.01 µg/l 16 Mar 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Mar 2026 – Mar 2026 | below 0.004 µg/l 16 Mar 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Mar 2026 – Mar 2026 | below 0.01 µg/l 16 Mar 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jan 2024 – Mar 2026 | 97 mg/l 16 Mar 2026 |
| Aluminium, Dissolved 6037 | River water | 4 | Apr 2025 – Jan 2026 | 50 µg/l 29 Jan 2026 |
| Aminomethylphosphonic acid 7125 | River water | 12 | Apr 2025 – Mar 2026 | below 0.1 µg/l 16 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Jan 2024 – Mar 2026 | below 0.00044 mg/l 16 Mar 2026 |
| Barium, Dissolved 9446 | River water | 4 | Apr 2025 – Jan 2026 | 52 µg/l 29 Jan 2026 |
| Boron, Dissolved 9447 | River water | 4 | Apr 2025 – Jan 2026 | below 100 µg/l 29 Jan 2026 |
| Cadmium, Dissolved 0106 | River water | 4 | Apr 2025 – Jan 2026 | 0.024 µg/l 29 Jan 2026 |
| Calcium, Dissolved 0239 | River water | 4 | Apr 2025 – Jan 2026 | 17 mg/l 29 Jan 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 21 | Jul 2024 – Mar 2026 | 2.2 mg/l 16 Mar 2026 |
| Chloride 0172 | River water | 27 | Jan 2024 – Mar 2026 | 12 mg/l 16 Mar 2026 |
| Chromium, Dissolved 3409 | River water | 4 | Apr 2025 – Jan 2026 | below 0.5 µg/l 29 Jan 2026 |
| Copper : BLM Bioavailable 4821 | River water | 4 | Apr 2025 – Jan 2026 | 0.37 µg/l 29 Jan 2026 |
| Copper, Dissolved 6450 | River water | 4 | Apr 2025 – Jan 2026 | 4.9 µg/l 29 Jan 2026 |
| eDNA Report 3047 | River water | 4 | May 2024 – Jan 2025 | 1 text result 14 Jan 2025 |
| Environmental DNA Filtration 3064 | River water | 3 | May 2024 – Oct 2024 | DNA Stored 2 Oct 2024 |
| Flow Type 2896 | River water | 26 | Jan 2024 – Mar 2026 | Moderate Flow 16 Mar 2026 |
| Glyphosate 3007 | River water | 12 | Apr 2025 – Mar 2026 | below 0.1 µg/l 16 Mar 2026 |
| Hardness, Calcium 0163 | River water | 4 | Apr 2025 – Jan 2026 | 42.4 mg/l 29 Jan 2026 |
| Hardness, Total as CaCO3 0158 | River water | 4 | Apr 2025 – Jan 2026 | 66.3 mg/l 29 Jan 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Mar 2026 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Iron, Dissolved 6460 | River water | 4 | Apr 2025 – Jan 2026 | 130 µg/l 29 Jan 2026 |
| LCMS Screen : Semi Quantitative 7299 | River water | 1 | Jan 2026 – Jan 2026 | 1 text result 29 Jan 2026 |
| Lead : BLM Bioavailable 3377 | River water | 4 | Apr 2025 – Jan 2026 | 0.11 µg/l 29 Jan 2026 |
| Lead, Dissolved 0052 | River water | 4 | Apr 2025 – Jan 2026 | 0.45 µg/l 29 Jan 2026 |
| Lithium, Dissolved 4201 | River water | 4 | Apr 2025 – Jan 2026 | below 100 µg/l 29 Jan 2026 |
| Magnesium, Dissolved 0235 | River water | 4 | Apr 2025 – Jan 2026 | 5.8 mg/l 29 Jan 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 4 | Apr 2025 – Jan 2026 | 49 µg/l 29 Jan 2026 |
| Manganese, Dissolved 6458 | River water | 4 | Apr 2025 – Jan 2026 | 49 µg/l 29 Jan 2026 |
| Mitochondrial marker : Fish 12S 2857 | River water | 4 | May 2024 – Jan 2025 | Present 14 Jan 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Sep 2025 – Mar 2026 | below 0.002 µg/l 16 Mar 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Sep 2025 – Mar 2026 | below 0.002 µg/l 16 Mar 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 4 | Apr 2025 – Jan 2026 | 1.2 µg/l 29 Jan 2026 |
| Nickel, Dissolved 3410 | River water | 4 | Apr 2025 – Jan 2026 | 2.3 µg/l 29 Jan 2026 |
| Nitrite as N 0118 | River water | 27 | Jan 2024 – Mar 2026 | below 0.004 mg/l 16 Mar 2026 |
| Nitrogen, Total as N 9686 | River water | 26 | Jan 2024 – Mar 2026 | 0.78 mg/l 16 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Jan 2024 – Mar 2026 | 0.55 mg/l 16 Mar 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorobutanoic acid 2995 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorodecanoic acid 8892 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Sep 2025 – Mar 2026 | below 0.005 µg/l 16 Mar 2026 |
| Perfluorododecanoic acid 8894 | River water | 2 | Sep 2025 – Mar 2026 | below 0.002 µg/l 16 Mar 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorohexane sulfonamido amine 2874 | River water | 1 | Mar 2026 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorohexanoic acid 8888 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorononanoic acid 8891 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Sep 2025 – Mar 2026 | below 0.002 µg/l 16 Mar 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Mar 2026 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorooctanoic acid 8890 | River water | 2 | Sep 2025 – Mar 2026 | 0.0016 µg/l 16 Mar 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | Sep 2025 – Mar 2026 | below 0.0005 µg/l 16 Mar 2026 |
| Perfluoropentanoic acid 8887 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Sep 2025 – Mar 2026 | below 0.006 µg/l 16 Mar 2026 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Sep 2025 – Mar 2026 | below 0.002 µg/l 16 Mar 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Sep 2025 – Mar 2026 | below 0.004 µg/l 16 Mar 2026 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Sep 2025 – Mar 2026 | below 0.001 µg/l 16 Mar 2026 |
| Phosphorus, Total as P 0348 | River water | 26 | Jan 2024 – Mar 2026 | 0.023 mg/l 16 Mar 2026 |
| Potassium, Dissolved 0209 | River water | 4 | Apr 2025 – Jan 2026 | 3.2 mg/l 29 Jan 2026 |
| Preparation: DNA 5923 | River water | 3 | May 2024 – Oct 2024 | Done 2 Oct 2024 |
| Silica, reactive as SiO2 0182 | River water | 27 | Jan 2024 – Mar 2026 | 10 mg/l 16 Mar 2026 |
| Sodium, Dissolved 0205 | River water | 4 | Apr 2025 – Jan 2026 | 18 mg/l 29 Jan 2026 |
| Solids, Suspended at 105 C 0135 | River water | 27 | Jan 2024 – Mar 2026 | 4 mg/l 16 Mar 2026 |
| Strontium, Filtered 6693 | River water | 4 | Apr 2025 – Jan 2026 | 93 µg/l 29 Jan 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 4 | Apr 2025 – Jan 2026 | 24 mg/l 29 Jan 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 4 | Apr 2025 – Jan 2026 | 8.5 µg/l 29 Jan 2026 |
| Zinc, Dissolved 3408 | River water | 4 | Apr 2025 – Jan 2026 | 19 µg/l 29 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.