Whilton Branch of Nene Weedon A45 Road Bridge
EA name: WHILTON BRANCH OF NENE WEEDON A45 RD.BR.
Environment Agency sampling point AN-WHIL100W · 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
- 7 Sep 2026, 11:4724 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 since 4 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 463333, 259921As published, to the nearest 1 m. Open in a map
- River, by its own name
- Whilton
- River, by the map
- Whilton BrookPlaced on a river whose name partly matches its own, 2 m from the line.
- Next gauge downstream
- Kislingbury On the River Nene · 9.6 km along the river (the path rests on a repair to the map)
- Nearest gauge upstream
- DODFORD GS 1.2 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (28 samples)
Monitoring (national agency policy) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
84.4%
Sampled 7 Sep 2026, 24 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:47 | 84.4 | 84.4% |
| 3 Aug 2026, 13:11 | 98 | 98% |
| 3 Jul 2026, 11:08 | 98.2 | 98.2% |
| 19 Jun 2026, 10:25 | 94.6 | 94.6% |
| 15 May 2026, 10:40 | 98.5 | 98.5% |
| 24 Apr 2026, 14:58 | 133.4 | 133.4% |
| 2 Mar 2026, 10:34 | 95.4 | 95.4% |
| 6 Feb 2026, 11:06 | 94.6 | 94.6% |
| 2 Jan 2026, 13:03 | 95.2 | 95.2% |
| 12 Dec 2025, 11:23 | 94.6 | 94.6% |
| 4 Nov 2025, 11:00 | 88.2 | 88.2% |
| 10 Oct 2025, 12:11 | 86.2 | 86.2% |
| 8 Sep 2025, 11:32 | 83.3 | 83.3% |
| 4 Aug 2025, 12:49 | 97 | 97% |
| 7 Jul 2025, 14:29 | 86 | 86% |
| 4 Jun 2025, 15:17 | 114.9 | 114.9% |
| 7 May 2025, 11:30 | 108.6 | 108.6% |
| 7 Apr 2025, 13:09 | 127.7 | 127.7% |
| 31 Mar 2025, 10:59 | 105.6 | 105.6% |
| 14 Mar 2025, 11:59 | 107.8 | 107.8% |
| 27 Feb 2025, 13:56 | 92.7 | 92.7% |
| 12 Feb 2025, 11:53 | 98.3 | 98.3% |
| 2 Dec 2024, 10:12 | 92.8 | 92.8% |
| 15 Oct 2024, 13:03 | 96.1 | 96.1% |
| 19 Aug 2024, 12:27 | 96.2 | 96.2% |
| 15 Jul 2024, 10:52 | 103.8 | 103.8% |
| 27 Jun 2024, 11:17 | 102.5 | 102.5% |
| 1 Mar 2024, 13:30 | 93.2 | 93.2% |
| 1 Feb 2024, 10:07 | 95.5 | 95.5% |
| 15 Jan 2024, 12:16 | 97.3 | 97.3% |
| 4 Dec 2023, 14:07 | 88 | 88% |
| 13 Nov 2023, 11:12 | 89.9 | 89.9% |
| 4 Oct 2023, 11:01 | 86.7 | 86.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.17 mg/l
Sampled 7 Sep 2026, 24 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:47 | 8.17 | 8.17 mg/l |
| 3 Aug 2026, 13:11 | 9.16 | 9.16 mg/l |
| 3 Jul 2026, 11:08 | 9.55 | 9.55 mg/l |
| 19 Jun 2026, 10:25 | 8.97 | 8.97 mg/l |
| 15 May 2026, 10:40 | 11 | 11 mg/l |
| 24 Apr 2026, 14:58 | 14 | 14 mg/l |
| 2 Mar 2026, 10:34 | 11 | 11 mg/l |
| 6 Feb 2026, 11:06 | 11.7 | 11.7 mg/l |
| 2 Jan 2026, 13:03 | 12.4 | 12.4 mg/l |
| 12 Dec 2025, 11:23 | 10.8 | 10.8 mg/l |
| 4 Nov 2025, 11:00 | 9.4 | 9.4 mg/l |
| 10 Oct 2025, 12:11 | 8.94 | 8.94 mg/l |
| 8 Sep 2025, 11:32 | 8.18 | 8.18 mg/l |
| 4 Aug 2025, 12:49 | 9.27 | 9.27 mg/l |
| 7 Jul 2025, 14:29 | 8.36 | 8.36 mg/l |
| 4 Jun 2025, 15:17 | 11.6 | 11.6 mg/l |
| 7 May 2025, 11:30 | 11.8 | 11.8 mg/l |
| 7 Apr 2025, 13:09 | 14.3 | 14.3 mg/l |
| 31 Mar 2025, 10:59 | 12.1 | 12.1 mg/l |
| 14 Mar 2025, 11:59 | 13.2 | 13.2 mg/l |
| 27 Feb 2025, 13:56 | 11.2 | 11.2 mg/l |
| 12 Feb 2025, 11:53 | 12.4 | 12.4 mg/l |
| 2 Dec 2024, 10:12 | 10.8 | 10.8 mg/l |
| 15 Oct 2024, 13:03 | 10.5 | 10.5 mg/l |
| 19 Aug 2024, 12:27 | 9.59 | 9.59 mg/l |
| 15 Jul 2024, 10:52 | 10.6 | 10.6 mg/l |
| 27 Jun 2024, 11:17 | 9.66 | 9.66 mg/l |
| 1 Mar 2024, 13:30 | 11.3 | 11.3 mg/l |
| 1 Feb 2024, 10:07 | 11.9 | 11.9 mg/l |
| 15 Jan 2024, 12:16 | 12.7 | 12.7 mg/l |
| 4 Dec 2023, 14:07 | 10.8 | 10.8 mg/l |
| 13 Nov 2023, 11:12 | 10.2 | 10.2 mg/l |
| 4 Oct 2023, 11:01 | 8.99 | 8.99 mg/l |
Water temperature
code 0076 · °C
16.8 °C
Sampled 7 Sep 2026, 24 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:47 | 16.8 | 16.8 °C |
| 3 Aug 2026, 13:11 | 18.5 | 18.5 °C |
| 3 Jul 2026, 11:08 | 16.6 | 16.6 °C |
| 19 Jun 2026, 10:25 | 17.8 | 17.8 °C |
| 15 May 2026, 10:40 | 10.5 | 10.5 °C |
| 24 Apr 2026, 14:58 | 13.1 | 13.1 °C |
| 2 Mar 2026, 10:34 | 9 | 9 °C |
| 6 Feb 2026, 11:06 | 6.3 | 6.3 °C |
| 2 Jan 2026, 13:03 | 4.3 | 4.3 °C |
| 12 Dec 2025, 11:23 | 9.4 | 9.4 °C |
| 4 Nov 2025, 11:00 | 12.4 | 12.4 °C |
| 10 Oct 2025, 12:11 | 13.6 | 13.6 °C |
| 8 Sep 2025, 11:32 | 16.1 | 16.1 °C |
| 4 Aug 2025, 12:49 | 17.4 | 17.4 °C |
| 7 Jul 2025, 14:29 | 16.6 | 16.6 °C |
| 4 Jun 2025, 15:17 | 15 | 15 °C |
| 7 May 2025, 11:30 | 11.4 | 11.4 °C |
| 7 Apr 2025, 13:09 | 10.3 | 10.3 °C |
| 31 Mar 2025, 10:59 | 9.4 | 9.4 °C |
| 14 Mar 2025, 11:59 | 6.7 | 6.7 °C |
| 27 Feb 2025, 13:56 | 7.2 | 7.2 °C |
| 12 Feb 2025, 11:53 | 5.4 | 5.4 °C |
| 2 Dec 2024, 10:12 | 8.6 | 8.6 °C |
| 15 Oct 2024, 13:03 | 11.5 | 11.5 °C |
| 19 Aug 2024, 12:27 | 15.4 | 15.4 °C |
| 15 Jul 2024, 10:52 | 14.5 | 14.5 °C |
| 27 Jun 2024, 11:17 | 18.1 | 18.1 °C |
| 1 Mar 2024, 13:30 | 6.9 | 6.9 °C |
| 1 Feb 2024, 10:07 | 6 | 6 °C |
| 15 Jan 2024, 12:16 | 4 | 4 °C |
| 4 Dec 2023, 14:07 | 6.4 | 6.4 °C |
| 13 Nov 2023, 11:12 | 9.6 | 9.6 °C |
| 4 Oct 2023, 11:01 | 13.6 | 13.6 °C |
pH
code 0061
7.98
Sampled 7 Sep 2026, 24 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:47 | 7.98 | 7.98 |
| 3 Aug 2026, 13:11 | 8.01 | 8.01 |
| 3 Jul 2026, 11:08 | 8.03 | 8.03 |
| 19 Jun 2026, 10:25 | 8.01 | 8.01 |
| 15 May 2026, 10:40 | 8.1 | 8.1 |
| 24 Apr 2026, 14:58 | 8.62 | 8.62 |
| 2 Mar 2026, 10:34 | 7.97 | 7.97 |
| 6 Feb 2026, 11:06 | 8.19 | 8.19 |
| 2 Jan 2026, 13:03 | 8.09 | 8.09 |
| 12 Dec 2025, 11:23 | 8.09 | 8.09 |
| 4 Nov 2025, 11:00 | 7.84 | 7.84 |
| 10 Oct 2025, 12:11 | 8.21 | 8.21 |
| 8 Sep 2025, 11:32 | 7.99 | 7.99 |
| 4 Aug 2025, 12:49 | 8.01 | 8.01 |
| 7 Jul 2025, 14:29 | 7.85 | 7.85 |
| 4 Jun 2025, 15:17 | 8.31 | 8.31 |
| 7 May 2025, 11:30 | 8.15 | 8.15 |
| 7 Apr 2025, 13:09 | 8.47 | 8.47 |
| 31 Mar 2025, 10:59 | 8.02 | 8.02 |
| 14 Mar 2025, 11:59 | 8.25 | 8.25 |
| 27 Feb 2025, 13:56 | 8.13 | 8.13 |
| 12 Feb 2025, 11:53 | 8.11 | 8.11 |
| 2 Dec 2024, 10:12 | 7.79 | 7.79 |
| 15 Oct 2024, 13:03 | 7.96 | 7.96 |
| 19 Aug 2024, 12:27 | 8 | 8 |
| 15 Jul 2024, 10:52 | 8.11 | 8.11 |
| 27 Jun 2024, 11:17 | 8.05 | 8.05 |
| 1 Mar 2024, 13:30 | 7.91 | 7.91 |
| 1 Feb 2024, 10:07 | 8.09 | 8.09 |
| 15 Jan 2024, 12:16 | 8.15 | 8.15 |
| 4 Dec 2023, 14:07 | 7.68 | 7.68 |
| 13 Nov 2023, 11:12 | 7.83 | 7.83 |
| 4 Oct 2023, 11:01 | 7.93 | 7.93 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 7 Sep 2026, 24 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Aug 2026, 13:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2026, 11:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jun 2026, 10:25 | 0.037 | 0.037 mg/l |
| 15 May 2026, 10:40 | 0.064 | 0.064 mg/l |
| 24 Apr 2026, 14:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Mar 2026, 10:34 | 0.041 | 0.041 mg/l |
| 6 Feb 2026, 11:06 | 0.13 | 0.13 mg/l |
| 2 Jan 2026, 13:03 | 0.23 | 0.23 mg/l |
| 12 Dec 2025, 11:23 | 0.041 | 0.041 mg/l |
| 4 Nov 2025, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Oct 2025, 12:11 | 0.092 | 0.092 mg/l |
| 8 Sep 2025, 11:32 | 0.24 | 0.24 mg/l |
| 4 Aug 2025, 12:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jul 2025, 14:29 | 0.18 | 0.18 mg/l |
| 4 Jun 2025, 15:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 May 2025, 11:30 | 0.073 | 0.073 mg/l |
| 31 Mar 2025, 10:59 | 0.076 | 0.076 mg/l |
| 14 Mar 2025, 11:59 | 0.076 | 0.076 mg/l |
| 27 Feb 2025, 13:56 | 0.055 | 0.055 mg/l |
| 12 Feb 2025, 11:53 | 0.098 | 0.098 mg/l |
| 2 Dec 2024, 10:12 | 0.087 | 0.087 mg/l |
| 15 Oct 2024, 13:03 | 0.055 | 0.055 mg/l |
| 19 Aug 2024, 12:27 | 0.031 | 0.031 mg/l |
| 15 Jul 2024, 10:52 | 0.035 | 0.035 mg/l |
| 27 Jun 2024, 11:17 | 0.039 | 0.039 mg/l |
| 1 Mar 2024, 13:30 | 0.51 | 0.51 mg/l |
| 1 Feb 2024, 10:07 | 0.1 | 0.1 mg/l |
| 15 Jan 2024, 12:16 | 0.15 | 0.15 mg/l |
| 4 Dec 2023, 14:07 | 0.25 | 0.25 mg/l |
| 13 Nov 2023, 11:12 | 0.057 | 0.057 mg/l |
| 4 Oct 2023, 11:01 | 0.03 | 0.03 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
14 mg/l
Sampled 7 Sep 2026, 24 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:47 | 14 | 14 mg/l |
| 3 Aug 2026, 13:11 | 13 | 13 mg/l |
| 3 Jul 2026, 11:08 | 11 | 11 mg/l |
| 19 Jun 2026, 10:25 | 11 | 11 mg/l |
| 15 May 2026, 10:40 | 8.65 | 8.65 mg/l |
| 24 Apr 2026, 14:58 | 11.9 | 11.9 mg/l |
| 2 Mar 2026, 10:34 | 7.58 | 7.58 mg/l |
| 6 Feb 2026, 11:06 | 4.88 | 4.88 mg/l |
| 2 Jan 2026, 13:03 | 11.9 | 11.9 mg/l |
| 12 Dec 2025, 11:23 | 11 | 11 mg/l |
| 4 Nov 2025, 11:00 | 13 | 13 mg/l |
| 10 Oct 2025, 12:11 | 15 | 15 mg/l |
| 8 Sep 2025, 11:32 | 11.7 | 11.7 mg/l |
| 4 Aug 2025, 12:49 | 11 | 11 mg/l |
| 7 Jul 2025, 14:29 | 10.9 | 10.9 mg/l |
| 4 Jun 2025, 15:17 | 11.9 | 11.9 mg/l |
| 7 May 2025, 11:30 | 14.9 | 14.9 mg/l |
| 31 Mar 2025, 10:59 | 9.94 | 9.94 mg/l |
| 14 Mar 2025, 11:59 | 8.96 | 8.96 mg/l |
| 27 Feb 2025, 13:56 | 6.68 | 6.68 mg/l |
| 12 Feb 2025, 11:53 | 7.86 | 7.86 mg/l |
| 15 Oct 2024, 13:03 | 7.14 | 7.14 mg/l |
| 19 Aug 2024, 12:27 | 13.9 | 13.9 mg/l |
| 15 Jul 2024, 10:52 | 13.9 | 13.9 mg/l |
| 27 Jun 2024, 11:17 | 12.9 | 12.9 mg/l |
| 1 Mar 2024, 13:30 | 6.97 | 6.97 mg/l |
| 1 Feb 2024, 10:07 | 11.9 | 11.9 mg/l |
| 15 Jan 2024, 12:16 | 9.85 | 9.85 mg/l |
| 4 Dec 2023, 14:07 | 7.06 | 7.06 mg/l |
| 13 Nov 2023, 11:12 | 9.74 | 9.74 mg/l |
| 4 Oct 2023, 11:01 | 11 | 11 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.83 mg/l
Sampled 7 Sep 2026, 24 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:47 | 0.83 | 0.83 mg/l |
| 3 Aug 2026, 13:11 | 0.76 | 0.76 mg/l |
| 3 Jul 2026, 11:08 | 0.81 | 0.81 mg/l |
| 19 Jun 2026, 10:25 | 0.48 | 0.48 mg/l |
| 15 May 2026, 10:40 | 0.4 | 0.4 mg/l |
| 24 Apr 2026, 14:58 | 0.34 | 0.34 mg/l |
| 2 Mar 2026, 10:34 | 0.098 | 0.098 mg/l |
| 6 Feb 2026, 11:06 | 0.13 | 0.13 mg/l |
| 2 Jan 2026, 13:03 | 0.29 | 0.29 mg/l |
| 12 Dec 2025, 11:23 | 0.18 | 0.18 mg/l |
| 4 Nov 2025, 11:00 | 0.57 | 0.57 mg/l |
| 10 Oct 2025, 12:11 | 0.79 | 0.79 mg/l |
| 8 Sep 2025, 11:32 | 0.52 | 0.52 mg/l |
| 4 Aug 2025, 12:49 | 0.74 | 0.74 mg/l |
| 7 Jul 2025, 14:29 | 0.75 | 0.75 mg/l |
| 4 Jun 2025, 15:17 | 0.46 | 0.46 mg/l |
| 7 May 2025, 11:30 | 0.37 | 0.37 mg/l |
| 31 Mar 2025, 10:59 | 0.23 | 0.23 mg/l |
| 14 Mar 2025, 11:59 | 0.17 | 0.17 mg/l |
| 27 Feb 2025, 13:56 | 0.11 | 0.11 mg/l |
| 12 Feb 2025, 11:53 | 0.15 | 0.15 mg/l |
| 2 Dec 2024, 10:12 | 0.13 | 0.13 mg/l |
| 15 Oct 2024, 13:03 | 0.17 | 0.17 mg/l |
| 19 Aug 2024, 12:27 | 0.61 | 0.61 mg/l |
| 15 Jul 2024, 10:52 | 0.42 | 0.42 mg/l |
| 27 Jun 2024, 11:17 | 0.45 | 0.45 mg/l |
| 1 Mar 2024, 13:30 | 0.15 | 0.15 mg/l |
| 1 Feb 2024, 10:07 | 0.24 | 0.24 mg/l |
| 15 Jan 2024, 12:16 | 0.17 | 0.17 mg/l |
| 4 Dec 2023, 14:07 | 0.17 | 0.17 mg/l |
| 13 Nov 2023, 11:12 | 0.34 | 0.34 mg/l |
| 4 Oct 2023, 11:01 | 0.65 | 0.65 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
822 µS/cm
Sampled 7 Sep 2026, 24 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:47 | 822 | 822 µS/cm |
| 3 Aug 2026, 13:11 | 863 | 863 µS/cm |
| 3 Jul 2026, 11:08 | 839 | 839 µS/cm |
| 19 Jun 2026, 10:25 | 810 | 810 µS/cm |
| 15 May 2026, 10:40 | 787 | 787 µS/cm |
| 24 Apr 2026, 14:58 | 812 | 812 µS/cm |
| 2 Mar 2026, 10:34 | 639 | 639 µS/cm |
| 6 Feb 2026, 11:06 | 426 | 426 µS/cm |
| 2 Jan 2026, 13:03 | 777 | 777 µS/cm |
| 12 Dec 2025, 11:23 | 699 | 699 µS/cm |
| 4 Nov 2025, 11:00 | 801 | 801 µS/cm |
| 10 Oct 2025, 12:11 | 892 | 892 µS/cm |
| 8 Sep 2025, 11:32 | 888 | 888 µS/cm |
| 4 Aug 2025, 12:49 | 795 | 795 µS/cm |
| 7 Jul 2025, 14:29 | 668 | 668 µS/cm |
| 4 Jun 2025, 15:17 | 816 | 816 µS/cm |
| 7 May 2025, 11:30 | 848 | 848 µS/cm |
| 7 Apr 2025, 13:09 | 770 | 770 µS/cm |
| 31 Mar 2025, 10:59 | 770 | 770 µS/cm |
| 14 Mar 2025, 11:59 | 783 | 783 µS/cm |
| 27 Feb 2025, 13:56 | 652 | 652 µS/cm |
| 12 Feb 2025, 11:53 | 699 | 699 µS/cm |
| 2 Dec 2024, 10:12 | 680 | 680 µS/cm |
| 15 Oct 2024, 13:03 | 671 | 671 µS/cm |
| 19 Aug 2024, 12:27 | 843 | 843 µS/cm |
| 15 Jul 2024, 10:52 | 842 | 842 µS/cm |
| 27 Jun 2024, 11:17 | 840 | 840 µS/cm |
| 1 Mar 2024, 13:30 | 638 | 638 µS/cm |
| 1 Feb 2024, 10:07 | 801 | 801 µS/cm |
| 15 Jan 2024, 12:16 | 752 | 752 µS/cm |
| 4 Dec 2023, 14:07 | 552 | 552 µS/cm |
| 13 Nov 2023, 11:12 | 762 | 762 µS/cm |
| 4 Oct 2023, 11:01 | 861 | 861 µS/cm |
Everything measured here
84 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 84 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 33 | Oct 2023 – Sep 2026 | 84.4% 7 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Sep 2026 | 8.17 mg/l 7 Sep 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Sep 2026 | 16.8 °C 7 Sep 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Sep 2026 | 7.98 7 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 32 | Oct 2023 – Sep 2026 | below 0.03 mg/l 7 Sep 2026 |
| Nitrate as N 0117 | River water | 31 | Oct 2023 – Sep 2026 | 14 mg/l 7 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 32 | Oct 2023 – Sep 2026 | 0.83 mg/l 7 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Sep 2026 | 822 µS/cm 7 Sep 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Feb 2026 – Feb 2026 | below 0.002 µg/l 6 Feb 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Aug 2025 – Aug 2025 | below 0.001 µg/l 4 Aug 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Feb 2026 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Aug 2025 – Feb 2026 | below 0.004 µg/l 6 Feb 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Feb 2026 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Feb 2026 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Feb 2026 – Feb 2026 | below 0.004 µg/l 6 Feb 2026 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Feb 2026 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Feb 2026 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 6 Feb 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Feb 2026 – Feb 2026 | below 0.004 µg/l 6 Feb 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 6 Feb 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Feb 2026 – Feb 2026 | below 0.004 µg/l 6 Feb 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Feb 2026 – Feb 2026 | below 0.01 µg/l 6 Feb 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 32 | Oct 2023 – Sep 2026 | 160 mg/l 7 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 32 | Oct 2023 – Sep 2026 | below 0.00086 mg/l 7 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 31 | Oct 2023 – Sep 2026 | below 3 mg/l 7 Sep 2026 |
| Cadmium, Dissolved 0106 | River water | 6 | Oct 2023 – Mar 2024 | below 0.01 µg/l 1 Mar 2024 |
| Calcium, Dissolved 0239 | River water | 6 | Oct 2023 – Mar 2024 | 97 mg/l 1 Mar 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 6 | Oct 2023 – Mar 2024 | 4.8 mg/l 1 Mar 2024 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Feb 2026 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| Lead : BLM Bioavailable 3377 | River water | 6 | Oct 2023 – Mar 2024 | 0.01 µg/l 1 Mar 2024 |
| Lead, Dissolved 0052 | River water | 6 | Oct 2023 – Mar 2024 | below 0.1 µg/l 1 Mar 2024 |
| Magnesium, Dissolved 0235 | River water | 6 | Oct 2023 – Mar 2024 | 6.7 mg/l 1 Mar 2024 |
| Mercury, Dissolved 0103 | River water | 5 | Oct 2023 – Mar 2024 | below 0.01 µg/l 1 Mar 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Aug 2025 – Feb 2026 | below 0.002 µg/l 6 Feb 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Aug 2025 – Feb 2026 | below 0.002 µg/l 6 Feb 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 6 | Oct 2023 – Mar 2024 | 0.8 µg/l 1 Mar 2024 |
| Nickel, Dissolved 3410 | River water | 6 | Oct 2023 – Mar 2024 | 2.1 µg/l 1 Mar 2024 |
| Nitrite as N 0118 | River water | 32 | Oct 2023 – Sep 2026 | 0.024 mg/l 7 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 31 | Oct 2023 – Sep 2026 | 14 mg/l 7 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | Aug 2025 – Feb 2026 | 0.0028 µg/l 6 Feb 2026 |
| Perfluorobutanoic acid 2995 | River water | 2 | Aug 2025 – Feb 2026 | 0.0023 µg/l 6 Feb 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| Perfluorodecanoic acid 8892 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Aug 2025 – Feb 2026 | below 0.005 µg/l 6 Feb 2026 |
| Perfluorododecanoic acid 8894 | River water | 2 | Aug 2025 – Feb 2026 | below 0.002 µg/l 6 Feb 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Aug 2025 – Feb 2026 | 0.0022 µg/l 6 Feb 2026 |
| Perfluorohexane sulfonamido amine 2874 | River water | 1 | Feb 2026 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Aug 2025 – Feb 2026 | 0.0006 µg/l 6 Feb 2026 |
| Perfluorohexanoic acid 8888 | River water | 2 | Aug 2025 – Feb 2026 | 0.0036 µg/l 6 Feb 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluorononanoic acid 8891 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Aug 2025 – Feb 2026 | below 0.002 µg/l 6 Feb 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 2026 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | Aug 2025 – Feb 2026 | 0.0011 µg/l 6 Feb 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | Aug 2025 – Feb 2026 | 0.0018 µg/l 6 Feb 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Feb 2026 – Feb 2026 | 0.0028 µg/l 6 Feb 2026 |
| Perfluorooctanoic acid 8890 | River water | 2 | Aug 2025 – Feb 2026 | 0.0024 µg/l 6 Feb 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | Aug 2025 – Feb 2026 | below 0.0005 µg/l 6 Feb 2026 |
| Perfluoropentanoic acid 8887 | River water | 2 | Aug 2025 – Feb 2026 | 0.0028 µg/l 6 Feb 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Aug 2025 – Feb 2026 | below 0.006 µg/l 6 Feb 2026 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Aug 2025 – Feb 2026 | below 0.002 µg/l 6 Feb 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Aug 2025 – Feb 2026 | below 0.004 µg/l 6 Feb 2026 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Aug 2025 – Feb 2026 | below 0.001 µg/l 6 Feb 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.