River Mersey at Woolston Weir at Sluices
EA name: RIVER MERSEY AT WOOLSTON WEIR AT SLUICES
Environment Agency sampling point NW-88002631 · 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
- 12 Aug 2026, 08:0350 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 36 since 16 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 365403, 388696As published, to the nearest 1 m. Open in a map
- River, by its own name
- Mersey
- River, by the map
- River MerseyPlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Westy On the River Mersey · 3.7 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
75.3%
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 08:03 | 75.3 | 75.3% |
| 22 Jul 2026, 09:25 | 63 | 63% |
| 30 Jun 2026, 09:52 | 51.2 | 51.2% |
| 26 May 2026, 12:17 | 80 | 80% |
| 27 Apr 2026, 08:58 | 74.1 | 74.1% |
| 26 Mar 2026, 11:40 | 78.8 | 78.8% |
| 6 Feb 2026, 12:34 | 84.8 | 84.8% |
| 22 Jan 2026, 11:41 | 87.1 | 87.1% |
| 16 Dec 2025, 11:29 | 92.6 | 92.6% |
| 6 Nov 2025, 11:45 | 84.4 | 84.4% |
| 29 Oct 2025, 11:09 | 87.4 | 87.4% |
| 22 Oct 2025, 10:54 | 65.5 | 65.5% |
| 14 Aug 2025, 08:43 | 87.9 | 87.9% |
| 24 Jul 2025, 08:40 | 43.1 | 43.1% |
| 30 Jun 2025, 09:41 | 50.5 | 50.5% |
| 30 May 2025, 10:55 | 43.5 | 43.5% |
| 3 Apr 2025, 08:39 | 67.1 | 67.1% |
| 4 Mar 2025, 13:31 | 78.1 | 78.1% |
| 11 Feb 2025, 13:45 | 81.1 | 81.1% |
| 23 Jan 2025, 13:20 | 87.1 | 87.1% |
| 3 Dec 2024, 12:36 | 84.1 | 84.1% |
| 18 Nov 2024, 11:23 | 68.4 | 68.4% |
| 14 Oct 2024, 12:34 | 62.5 | 62.5% |
| 23 Sep 2024, 10:32 | 59.6 | 59.6% |
| 23 Aug 2024, 10:13 | 48.5 | 48.5% |
| 17 Jul 2024, 10:59 | 53.4 | 53.4% |
| 25 Jun 2024, 14:21 | 73.5 | 73.5% |
| 15 May 2024, 11:08 | 30.6 | 30.6% |
| 18 Apr 2024, 08:53 | 80.5 | 80.5% |
| 21 Mar 2024, 11:38 | 77.1 | 77.1% |
| 19 Feb 2024, 15:40 | 86.7 | 86.7% |
| 26 Jan 2024, 13:14 | 85 | 85% |
| 4 Dec 2023, 15:04 | 83.5 | 83.5% |
| 22 Nov 2023, 14:34 | 86.3 | 86.3% |
| 16 Oct 2023, 09:08 | 78.6 | 78.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.91 mg/l
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 08:03 | 6.91 | 6.91 mg/l |
| 22 Jul 2026, 09:25 | 5.63 | 5.63 mg/l |
| 30 Jun 2026, 09:52 | 4.55 | 4.55 mg/l |
| 26 May 2026, 12:17 | 7.52 | 7.52 mg/l |
| 27 Apr 2026, 08:58 | 7.75 | 7.75 mg/l |
| 26 Mar 2026, 11:40 | 9.11 | 9.11 mg/l |
| 6 Feb 2026, 12:34 | 10.4 | 10.4 mg/l |
| 22 Jan 2026, 11:41 | 10.4 | 10.4 mg/l |
| 16 Dec 2025, 11:29 | 10.7 | 10.7 mg/l |
| 6 Nov 2025, 11:45 | 8.93 | 8.93 mg/l |
| 29 Oct 2025, 11:09 | 9.66 | 9.66 mg/l |
| 22 Oct 2025, 10:54 | 6.85 | 6.85 mg/l |
| 14 Aug 2025, 08:43 | 7.91 | 7.91 mg/l |
| 24 Jul 2025, 08:40 | 3.97 | 3.97 mg/l |
| 30 Jun 2025, 09:41 | 4.6 | 4.6 mg/l |
| 30 May 2025, 10:55 | 4.26 | 4.26 mg/l |
| 3 Apr 2025, 08:39 | 7.38 | 7.38 mg/l |
| 4 Mar 2025, 13:31 | 9.25 | 9.25 mg/l |
| 11 Feb 2025, 13:45 | 9.95 | 9.95 mg/l |
| 23 Jan 2025, 13:20 | 10.6 | 10.6 mg/l |
| 3 Dec 2024, 12:36 | 9.68 | 9.68 mg/l |
| 18 Nov 2024, 11:23 | 7.67 | 7.67 mg/l |
| 14 Oct 2024, 12:34 | 6.78 | 6.78 mg/l |
| 23 Sep 2024, 10:32 | 5.98 | 5.98 mg/l |
| 23 Aug 2024, 10:13 | 4.69 | 4.69 mg/l |
| 17 Jul 2024, 10:59 | 5.2 | 5.2 mg/l |
| 25 Jun 2024, 14:21 | 6.7 | 6.7 mg/l |
| 15 May 2024, 11:08 | 2.97 | 2.97 mg/l |
| 18 Apr 2024, 08:53 | 9.09 | 9.09 mg/l |
| 21 Mar 2024, 11:38 | 8.54 | 8.54 mg/l |
| 19 Feb 2024, 15:40 | 9.88 | 9.88 mg/l |
| 26 Jan 2024, 13:14 | 10.1 | 10.1 mg/l |
| 4 Dec 2023, 15:04 | 10.3 | 10.3 mg/l |
| 22 Nov 2023, 14:34 | 9.7 | 9.7 mg/l |
| 16 Oct 2023, 09:08 | 8.55 | 8.55 mg/l |
Water temperature
code 0076 · °C
19.4 °C
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 08:03 | 19.4 | 19.4 °C |
| 22 Jul 2026, 09:25 | 20.7 | 20.7 °C |
| 30 Jun 2026, 09:52 | 21 | 21 °C |
| 26 May 2026, 12:17 | 18.2 | 18.2 °C |
| 27 Apr 2026, 08:58 | 13.2 | 13.2 °C |
| 26 Mar 2026, 11:40 | 8.9 | 8.9 °C |
| 6 Feb 2026, 12:34 | 6.4 | 6.4 °C |
| 22 Jan 2026, 11:41 | 7.7 | 7.7 °C |
| 16 Dec 2025, 11:29 | 8.9 | 8.9 °C |
| 6 Nov 2025, 11:45 | 12.7 | 12.7 °C |
| 29 Oct 2025, 11:09 | 10.8 | 10.8 °C |
| 22 Oct 2025, 10:54 | 13.2 | 13.2 °C |
| 14 Aug 2025, 08:43 | 20.4 | 20.4 °C |
| 24 Jul 2025, 08:40 | 19.2 | 19.2 °C |
| 30 Jun 2025, 09:41 | 19.8 | 19.8 °C |
| 30 May 2025, 10:55 | 16.2 | 16.2 °C |
| 3 Apr 2025, 08:39 | 11 | 11 °C |
| 4 Mar 2025, 13:31 | 7.9 | 7.9 °C |
| 11 Feb 2025, 13:45 | 6.5 | 6.5 °C |
| 23 Jan 2025, 13:20 | 6.8 | 6.8 °C |
| 3 Dec 2024, 12:36 | 9.1 | 9.1 °C |
| 18 Nov 2024, 11:23 | 10.2 | 10.2 °C |
| 14 Oct 2024, 12:34 | 11.6 | 11.6 °C |
| 23 Sep 2024, 10:32 | 15.1 | 15.1 °C |
| 23 Aug 2024, 10:13 | 16.8 | 16.8 °C |
| 17 Jul 2024, 10:59 | 16.5 | 16.5 °C |
| 25 Jun 2024, 14:21 | 19.7 | 19.7 °C |
| 15 May 2024, 11:08 | 16.7 | 16.7 °C |
| 18 Apr 2024, 08:53 | 9.9 | 9.9 °C |
| 21 Mar 2024, 11:38 | 10.7 | 10.7 °C |
| 19 Feb 2024, 15:40 | 9.5 | 9.5 °C |
| 26 Jan 2024, 13:14 | 7.6 | 7.6 °C |
| 4 Dec 2023, 15:04 | 6.1 | 6.1 °C |
| 22 Nov 2023, 14:34 | 10.1 | 10.1 °C |
| 16 Oct 2023, 09:08 | 11.5 | 11.5 °C |
pH
code 0061
7.26
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 08:03 | 7.26 | 7.26 |
| 22 Jul 2026, 09:25 | 7.26 | 7.26 |
| 30 Jun 2026, 09:52 | 7.15 | 7.15 |
| 26 May 2026, 12:17 | 7.27 | 7.27 |
| 27 Apr 2026, 08:58 | 7.34 | 7.34 |
| 26 Mar 2026, 11:40 | 7.39 | 7.39 |
| 6 Feb 2026, 12:34 | 7.6 | 7.6 |
| 22 Jan 2026, 11:41 | 7.48 | 7.48 |
| 16 Dec 2025, 11:29 | 7.62 | 7.62 |
| 6 Nov 2025, 11:45 | 7.3 | 7.3 |
| 29 Oct 2025, 11:09 | 7.51 | 7.51 |
| 22 Oct 2025, 10:54 | 7.28 | 7.28 |
| 14 Aug 2025, 08:43 | 7.8 | 7.8 |
| 24 Jul 2025, 08:40 | 7.44 | 7.44 |
| 30 Jun 2025, 09:41 | 7.35 | 7.35 |
| 30 May 2025, 10:55 | 7.19 | 7.19 |
| 3 Apr 2025, 08:39 | 7.35 | 7.35 |
| 4 Mar 2025, 13:31 | 7.34 | 7.34 |
| 11 Feb 2025, 13:45 | 7.41 | 7.41 |
| 23 Jan 2025, 13:20 | 7.32 | 7.32 |
| 3 Dec 2024, 12:36 | 7.34 | 7.34 |
| 18 Nov 2024, 11:23 | 7.34 | 7.34 |
| 14 Oct 2024, 12:34 | 7.25 | 7.25 |
| 23 Sep 2024, 10:32 | 7.33 | 7.33 |
| 23 Aug 2024, 10:13 | 7.4 | 7.4 |
| 17 Jul 2024, 10:59 | 7.23 | 7.23 |
| 25 Jun 2024, 14:21 | 7.38 | 7.38 |
| 15 May 2024, 11:08 | 7.24 | 7.24 |
| 18 Apr 2024, 08:53 | 7.31 | 7.31 |
| 21 Mar 2024, 11:38 | 7.15 | 7.15 |
| 19 Feb 2024, 15:40 | 7.31 | 7.31 |
| 26 Jan 2024, 13:14 | 7.45 | 7.45 |
| 4 Dec 2023, 15:04 | 7.44 | 7.44 |
| 22 Nov 2023, 14:34 | 7.38 | 7.38 |
| 16 Oct 2023, 09:08 | 7.29 | 7.29 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.33 mg/l
Sampled 12 Aug 2026, 50 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 08:03 | 0.33 | 0.33 mg/l |
| 22 Jul 2026, 09:25 | 0.36 | 0.36 mg/l |
| 30 Jun 2026, 09:52 | 0.57 | 0.57 mg/l |
| 26 May 2026, 12:17 | 0.63 | 0.63 mg/l |
| 27 Apr 2026, 08:58 | 0.55 | 0.55 mg/l |
| 26 Mar 2026, 11:40 | 0.71 | 0.71 mg/l |
| 6 Feb 2026, 12:34 | 0.43 | 0.43 mg/l |
| 22 Jan 2026, 11:41 | 0.56 | 0.56 mg/l |
| 16 Dec 2025, 11:29 | 0.31 | 0.31 mg/l |
| 6 Nov 2025, 11:45 | 0.24 | 0.24 mg/l |
| 29 Oct 2025, 11:09 | 0.33 | 0.33 mg/l |
| 22 Oct 2025, 10:54 | 0.63 | 0.63 mg/l |
| 14 Aug 2025, 08:43 | 0.37 | 0.37 mg/l |
| 24 Jul 2025, 08:40 | 0.71 | 0.71 mg/l |
| 30 Jun 2025, 09:41 | 0.75 | 0.75 mg/l |
| 30 May 2025, 10:55 | 0.92 | 0.92 mg/l |
| 4 Mar 2025, 13:31 | 0.77 | 0.77 mg/l |
| 11 Feb 2025, 13:45 | 0.83 | 0.83 mg/l |
| 23 Jan 2025, 13:20 | 0.83 | 0.83 mg/l |
| 3 Dec 2024, 12:36 | 0.53 | 0.53 mg/l |
| 18 Nov 2024, 11:23 | 0.6 | 0.6 mg/l |
| 14 Oct 2024, 12:34 | 0.48 | 0.48 mg/l |
| 23 Sep 2024, 10:32 | 0.5 | 0.5 mg/l |
| 23 Aug 2024, 10:13 | 0.64 | 0.64 mg/l |
| 17 Jul 2024, 10:59 | 0.95 | 0.95 mg/l |
| 25 Jun 2024, 14:21 | 0.63 | 0.63 mg/l |
| 15 May 2024, 11:08 | 1 | 1 mg/l |
| 18 Apr 2024, 08:53 | 0.45 | 0.45 mg/l |
| 21 Mar 2024, 11:38 | 0.63 | 0.63 mg/l |
| 19 Feb 2024, 15:40 | 0.34 | 0.34 mg/l |
| 4 Dec 2023, 15:04 | 0.6 | 0.6 mg/l |
| 22 Nov 2023, 14:34 | 0.24 | 0.24 mg/l |
| 16 Oct 2023, 09:08 | 0.3 | 0.3 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7.75 mg/l
Sampled 12 Aug 2026, 50 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 08:03 | 7.75 | 7.75 mg/l |
| 22 Jul 2026, 09:25 | 8.21 | 8.21 mg/l |
| 30 Jun 2026, 09:52 | 8.13 | 8.13 mg/l |
| 26 May 2026, 12:17 | 6.16 | 6.16 mg/l |
| 27 Apr 2026, 08:58 | 7.49 | 7.49 mg/l |
| 26 Mar 2026, 11:40 | 4.12 | 4.12 mg/l |
| 6 Feb 2026, 12:34 | 5.93 | 5.93 mg/l |
| 22 Jan 2026, 11:41 | 5.13 | 5.13 mg/l |
| 16 Dec 2025, 11:29 | 1.77 | 1.77 mg/l |
| 6 Nov 2025, 11:45 | 3.33 | 3.33 mg/l |
| 29 Oct 2025, 11:09 | 4.11 | 4.11 mg/l |
| 22 Oct 2025, 10:54 | 6.16 | 6.16 mg/l |
| 14 Aug 2025, 08:43 | 8.83 | 8.83 mg/l |
| 24 Jul 2025, 08:40 | 6.47 | 6.47 mg/l |
| 30 Jun 2025, 09:41 | 7.97 | 7.97 mg/l |
| 30 May 2025, 10:55 | 6.75 | 6.75 mg/l |
| 4 Mar 2025, 13:31 | 6.52 | 6.52 mg/l |
| 11 Feb 2025, 13:45 | 6.6 | 6.6 mg/l |
| 23 Jan 2025, 13:20 | 5.19 | 5.19 mg/l |
| 18 Nov 2024, 11:23 | 8.88 | 8.88 mg/l |
| 14 Oct 2024, 12:34 | 6.02 | 6.02 mg/l |
| 23 Sep 2024, 10:32 | 7.18 | 7.18 mg/l |
| 23 Aug 2024, 10:13 | 8.93 | 8.93 mg/l |
| 17 Jul 2024, 10:59 | 4.47 | 4.47 mg/l |
| 25 Jun 2024, 14:21 | 7.77 | 7.77 mg/l |
| 15 May 2024, 11:08 | 6 | 6 mg/l |
| 18 Apr 2024, 08:53 | 3.73 | 3.73 mg/l |
| 21 Mar 2024, 11:38 | 4.52 | 4.52 mg/l |
| 19 Feb 2024, 15:40 | 2.26 | 2.26 mg/l |
| 26 Jan 2024, 13:14 | 3.54 | 3.54 mg/l |
| 4 Dec 2023, 15:04 | 5.12 | 5.12 mg/l |
| 22 Nov 2023, 14:34 | 2.66 | 2.66 mg/l |
| 16 Oct 2023, 09:08 | 3.53 | 3.53 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.4 mg/l
Sampled 22 Jul 2026, 2 months ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 09:25 | 0.4 | 0.4 mg/l |
| 30 Jun 2026, 09:52 | 0.5 | 0.5 mg/l |
| 26 May 2026, 12:17 | 0.66 | 0.66 mg/l |
| 27 Apr 2026, 08:58 | 0.23 | 0.23 mg/l |
| 26 Mar 2026, 11:40 | 0.17 | 0.17 mg/l |
| 6 Feb 2026, 12:34 | 0.25 | 0.25 mg/l |
| 22 Jan 2026, 11:41 | 0.3 | 0.3 mg/l |
| 16 Dec 2025, 11:29 | 0.15 | 0.15 mg/l |
| 6 Nov 2025, 11:45 | 0.21 | 0.21 mg/l |
| 29 Oct 2025, 11:09 | 0.28 | 0.28 mg/l |
| 22 Oct 2025, 10:54 | 0.48 | 0.48 mg/l |
| 14 Aug 2025, 08:43 | 0.78 | 0.78 mg/l |
| 24 Jul 2025, 08:40 | 0.54 | 0.54 mg/l |
| 30 Jun 2025, 09:41 | 0.54 | 0.54 mg/l |
| 30 May 2025, 10:55 | 0.41 | 0.41 mg/l |
| 4 Mar 2025, 13:31 | 0.31 | 0.31 mg/l |
| 11 Feb 2025, 13:45 | 0.28 | 0.28 mg/l |
| 23 Jan 2025, 13:20 | 0.26 | 0.26 mg/l |
| 3 Dec 2024, 12:36 | 0.29 | 0.29 mg/l |
| 18 Nov 2024, 11:23 | 0.42 | 0.42 mg/l |
| 14 Oct 2024, 12:34 | 0.46 | 0.46 mg/l |
| 23 Sep 2024, 10:32 | 0.53 | 0.53 mg/l |
| 23 Aug 2024, 10:13 | 0.56 | 0.56 mg/l |
| 17 Jul 2024, 10:59 | 0.44 | 0.44 mg/l |
| 25 Jun 2024, 14:21 | 0.85 | 0.85 mg/l |
| 15 May 2024, 11:08 | 0.26 | 0.26 mg/l |
| 18 Apr 2024, 08:53 | 0.19 | 0.19 mg/l |
| 21 Mar 2024, 11:38 | 0.24 | 0.24 mg/l |
| 19 Feb 2024, 15:40 | 0.12 | 0.12 mg/l |
| 26 Jan 2024, 13:14 | 0.13 | 0.13 mg/l |
| 4 Dec 2023, 15:04 | 0.29 | 0.29 mg/l |
| 22 Nov 2023, 14:34 | 0.13 | 0.13 mg/l |
| 16 Oct 2023, 09:08 | 0.19 | 0.19 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
565 µS/cm
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 08:03 | 565 | 565 µS/cm |
| 22 Jul 2026, 09:25 | 572 | 572 µS/cm |
| 30 Jun 2026, 09:52 | 552 | 552 µS/cm |
| 26 May 2026, 12:17 | 444 | 444 µS/cm |
| 27 Apr 2026, 08:58 | 520 | 520 µS/cm |
| 26 Mar 2026, 11:40 | 383 | 383 µS/cm |
| 6 Feb 2026, 12:34 | 460 | 460 µS/cm |
| 22 Jan 2026, 11:41 | 456 | 456 µS/cm |
| 16 Dec 2025, 11:29 | 229 | 229 µS/cm |
| 6 Nov 2025, 11:45 | 323 | 323 µS/cm |
| 29 Oct 2025, 11:09 | 359 | 359 µS/cm |
| 22 Oct 2025, 10:54 | 472 | 472 µS/cm |
| 14 Aug 2025, 08:43 | 576 | 576 µS/cm |
| 24 Jul 2025, 08:40 | 480 | 480 µS/cm |
| 30 Jun 2025, 09:41 | 614 | 614 µS/cm |
| 30 May 2025, 10:55 | 503 | 503 µS/cm |
| 3 Apr 2025, 08:39 | 602 | 602 µS/cm |
| 4 Mar 2025, 13:31 | 502 | 502 µS/cm |
| 11 Feb 2025, 13:45 | 532 | 532 µS/cm |
| 23 Jan 2025, 13:20 | 538 | 538 µS/cm |
| 3 Dec 2024, 12:36 | 422 | 422 µS/cm |
| 18 Nov 2024, 11:23 | 511 | 511 µS/cm |
| 14 Oct 2024, 12:34 | 413 | 413 µS/cm |
| 23 Sep 2024, 10:32 | 468 | 468 µS/cm |
| 23 Aug 2024, 10:13 | 547 | 547 µS/cm |
| 17 Jul 2024, 10:59 | 361 | 361 µS/cm |
| 25 Jun 2024, 14:21 | 517 | 517 µS/cm |
| 15 May 2024, 11:08 | 492 | 492 µS/cm |
| 18 Apr 2024, 08:53 | 342 | 342 µS/cm |
| 21 Mar 2024, 11:38 | 380 | 380 µS/cm |
| 19 Feb 2024, 15:40 | 257 | 257 µS/cm |
| 26 Jan 2024, 13:14 | 364 | 364 µS/cm |
| 4 Dec 2023, 15:04 | 514 | 514 µS/cm |
| 22 Nov 2023, 14:34 | 301 | 301 µS/cm |
| 16 Oct 2023, 09:08 | 326 | 326 µS/cm |
Everything measured here
63 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 63 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 35 | Oct 2023 – Aug 2026 | 75.3% 12 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 35 | Oct 2023 – Aug 2026 | 6.91 mg/l 12 Aug 2026 |
| Temperature of Water 0076 | River water | 35 | Oct 2023 – Aug 2026 | 19.4 °C 12 Aug 2026 |
| pH 0061 | River water | 35 | Oct 2023 – Aug 2026 | 7.26 12 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 33 | Oct 2023 – Aug 2026 | 0.33 mg/l 12 Aug 2026 |
| Nitrate as N 0117 | River water | 33 | Oct 2023 – Aug 2026 | 7.75 mg/l 12 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 33 | Oct 2023 – Jul 2026 | 0.4 mg/l 22 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 35 | Oct 2023 – Aug 2026 | 565 µS/cm 12 Aug 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 15 May 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 15 May 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 15 May 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 15 May 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | May 2024 – May 2024 | 0.0015 µg/l 15 May 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | May 2024 – May 2024 | below 0.004 µg/l 15 May 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 15 May 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | May 2024 – May 2024 | 0.016 µg/l 15 May 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 15 May 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 34 | Oct 2023 – Aug 2026 | 98 mg/l 12 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 33 | Oct 2023 – Aug 2026 | 0.00223 mg/l 12 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 32 | Oct 2023 – Aug 2026 | below 4 mg/l 12 Aug 2026 |
| Chloride 0172 | River water | 32 | Oct 2023 – Aug 2026 | 56 mg/l 12 Aug 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 30 | Oct 2023 – Aug 2026 | 36 µg/l 12 Aug 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 15 May 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 15 May 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 15 May 2024 |
| Nitrite as N 0118 | River water | 34 | Oct 2023 – Aug 2026 | 0.15 mg/l 12 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 33 | Oct 2023 – Aug 2026 | 7.9 mg/l 12 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | May 2024 – May 2024 | 0.0074 µg/l 15 May 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | May 2024 – May 2024 | 0.006 µg/l 15 May 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | May 2024 – May 2024 | 0.00066 µg/l 15 May 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 15 May 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 15 May 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 15 May 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 15 May 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | May 2024 – May 2024 | 0.0031 µg/l 15 May 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | May 2024 – May 2024 | 0.0012 µg/l 15 May 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | May 2024 – May 2024 | 0.0088 µg/l 15 May 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 15 May 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 15 May 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 15 May 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | May 2024 – May 2024 | 0.0022 µg/l 15 May 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | May 2024 – May 2024 | 0.0041 µg/l 15 May 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | May 2024 – May 2024 | 0.015 µg/l 15 May 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 15 May 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | May 2024 – May 2024 | 0.0063 µg/l 15 May 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | May 2024 – May 2024 | below 0.006 µg/l 15 May 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 15 May 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | May 2024 – May 2024 | below 0.004 µg/l 15 May 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 15 May 2024 |
| Solids, Suspended at 105 C 0135 | River water | 32 | Oct 2023 – Aug 2026 | 7.5 mg/l 12 Aug 2026 |
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.