Brent / G.U.C. at Lock 100, Brentford
EA name: BRENT / G.U.C. AT LOCK 100, BRENTFORD
Environment Agency sampling point TH-PBRR0018 · 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
- 11 Aug 2026, 15:0351 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 Environmental monitoring statutory (EU directives)
- Where
- National Grid 517297, 177321As published, to the nearest 1 m. Open in a map
- River, by its own name
- Brent G U C
- River, by the map
- River BrentPlaced on a river whose name partly matches its own, 18 m from the line.
- Next gauge downstream
- Westminster On the Thames Tideway · 20 km along the river (the path rests on a repair to the map)Beside Brentford: too close to say above or below.
- Nearest gauge upstream
- Hanwell On the River Brent · 4.9 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (33 samples)
Monitoring (UK govt policy - not GQA or RE) (2 samples)
Monitoring (national agency policy) (1 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
91.2%
Sampled 11 Aug 2026, 51 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 15:03 | 91.2 | 91.2% |
| 22 Jul 2026, 11:11 | 87.5 | 87.5% |
| 17 Jun 2026, 12:30 | 62.6 | 62.6% |
| 21 May 2026, 12:19 | 83.7 | 83.7% |
| 14 Apr 2026, 11:47 | 88.7 | 88.7% |
| 6 Mar 2026, 11:38 | 76.2 | 76.2% |
| 12 Feb 2026, 12:18 | 94.5 | 94.5% |
| 12 Jan 2026, 10:32 | 93.3 | 93.3% |
| 10 Dec 2025, 13:43 | 84.5 | 84.5% |
| 13 Nov 2025, 11:40 | 73.2 | 73.2% |
| 17 Oct 2025, 12:03 | 77.7 | 77.7% |
| 26 Sep 2025, 11:08 | 79.1 | 79.1% |
| 21 Aug 2025, 12:30 | 67.6 | 67.6% |
| 21 Jul 2025, 14:40 | 62.8 | 62.8% |
| 19 Jun 2025, 12:46 | 89.2 | 89.2% |
| 21 May 2025, 12:25 | 131.6 | 131.6% |
| 24 Apr 2025, 11:32 | 86.8 | 86.8% |
| 6 Mar 2025, 10:29 | 84.2 | 84.2% |
| 18 Feb 2025, 10:53 | 83.2 | 83.2% |
| 30 Jan 2025, 12:17 | 90.4 | 90.4% |
| 11 Dec 2024, 11:50 | 86.2 | 86.2% |
| 28 Nov 2024, 11:20 | 90.6 | 90.6% |
| 22 Oct 2024, 11:21 | 74.4 | 74.4% |
| 25 Sep 2024, 10:34 | 77 | 77% |
| 19 Aug 2024, 12:47 | 63 | 63% |
| 15 Jul 2024, 11:39 | 46.2 | 46.2% |
| 17 Jun 2024, 10:18 | 67.6 | 67.6% |
| 29 May 2024, 10:46 | 65.1 | 65.1% |
| 17 Apr 2024, 10:45 | 72.4 | 72.4% |
| 21 Mar 2024, 13:24 | 75.9 | 75.9% |
| 20 Feb 2024, 12:42 | 85.2 | 85.2% |
| 18 Jan 2024, 11:09 | 79.8 | 79.8% |
| 11 Dec 2023, 13:03 | 87.2 | 87.2% |
| 21 Nov 2023, 10:18 | 75.4 | 75.4% |
| 16 Oct 2023, 12:35 | 77.8 | 77.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.94 mg/l
Sampled 11 Aug 2026, 51 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 15:03 | 7.94 | 7.94 mg/l |
| 22 Jul 2026, 11:11 | 7.78 | 7.78 mg/l |
| 17 Jun 2026, 12:30 | 5.62 | 5.62 mg/l |
| 21 May 2026, 12:19 | 8.22 | 8.22 mg/l |
| 14 Apr 2026, 11:47 | 9.45 | 9.45 mg/l |
| 6 Mar 2026, 11:38 | 8.52 | 8.52 mg/l |
| 12 Feb 2026, 12:18 | 10.8 | 10.8 mg/l |
| 12 Jan 2026, 10:32 | 11.5 | 11.5 mg/l |
| 10 Dec 2025, 13:43 | 9.52 | 9.52 mg/l |
| 13 Nov 2025, 11:40 | 7.68 | 7.68 mg/l |
| 17 Oct 2025, 12:03 | 8.01 | 8.01 mg/l |
| 26 Sep 2025, 11:08 | 8.13 | 8.13 mg/l |
| 21 Aug 2025, 12:30 | 6.29 | 6.29 mg/l |
| 21 Jul 2025, 14:40 | 5.59 | 5.59 mg/l |
| 19 Jun 2025, 12:46 | 7.63 | 7.63 mg/l |
| 21 May 2025, 12:25 | 12.5 | 12.5 mg/l |
| 24 Apr 2025, 11:32 | 9.08 | 9.08 mg/l |
| 6 Mar 2025, 10:29 | 10 | 10 mg/l |
| 18 Feb 2025, 10:53 | 10.4 | 10.4 mg/l |
| 30 Jan 2025, 12:17 | 11 | 11 mg/l |
| 11 Dec 2024, 11:50 | 10.2 | 10.2 mg/l |
| 28 Nov 2024, 11:20 | 10.7 | 10.7 mg/l |
| 22 Oct 2024, 11:21 | 7.75 | 7.75 mg/l |
| 25 Sep 2024, 10:34 | 7.56 | 7.56 mg/l |
| 19 Aug 2024, 12:47 | 5.75 | 5.75 mg/l |
| 15 Jul 2024, 11:39 | 4.39 | 4.39 mg/l |
| 17 Jun 2024, 10:18 | 6.56 | 6.56 mg/l |
| 29 May 2024, 10:46 | 6.37 | 6.37 mg/l |
| 17 Apr 2024, 10:45 | 7.73 | 7.73 mg/l |
| 21 Mar 2024, 13:24 | 8.09 | 8.09 mg/l |
| 20 Feb 2024, 12:42 | 9.6 | 9.6 mg/l |
| 18 Jan 2024, 11:09 | 10.8 | 10.8 mg/l |
| 11 Dec 2023, 13:03 | 10.2 | 10.2 mg/l |
| 21 Nov 2023, 10:18 | 8.43 | 8.43 mg/l |
| 16 Oct 2023, 12:35 | 8.23 | 8.23 mg/l |
Water temperature
code 0076 · °C
22.1 °C
Sampled 11 Aug 2026, 51 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 15:03 | 22.1 | 22.1 °C |
| 22 Jul 2026, 11:11 | 21 | 21 °C |
| 17 Jun 2026, 12:30 | 20.5 | 20.5 °C |
| 21 May 2026, 12:19 | 16.1 | 16.1 °C |
| 14 Apr 2026, 11:47 | 12.4 | 12.4 °C |
| 6 Mar 2026, 11:38 | 10.3 | 10.3 °C |
| 12 Feb 2026, 12:18 | 9.5 | 9.5 °C |
| 12 Jan 2026, 10:32 | 6.3 | 6.3 °C |
| 10 Dec 2025, 13:43 | 10 | 10 °C |
| 13 Nov 2025, 11:40 | 13.1 | 13.1 °C |
| 17 Oct 2025, 12:03 | 13.9 | 13.9 °C |
| 26 Sep 2025, 11:08 | 14 | 14 °C |
| 21 Aug 2025, 12:30 | 18.7 | 18.7 °C |
| 21 Jul 2025, 14:40 | 21 | 21 °C |
| 19 Jun 2025, 12:46 | 23 | 23 °C |
| 21 May 2025, 12:25 | 17.7 | 17.7 °C |
| 24 Apr 2025, 11:32 | 13.2 | 13.2 °C |
| 6 Mar 2025, 10:29 | 7.8 | 7.8 °C |
| 18 Feb 2025, 10:53 | 5.6 | 5.6 °C |
| 30 Jan 2025, 12:17 | 6.9 | 6.9 °C |
| 11 Dec 2024, 11:50 | 7.8 | 7.8 °C |
| 28 Nov 2024, 11:20 | 8.2 | 8.2 °C |
| 22 Oct 2024, 11:21 | 13.4 | 13.4 °C |
| 25 Sep 2024, 10:34 | 16.1 | 16.1 °C |
| 19 Aug 2024, 12:47 | 19.7 | 19.7 °C |
| 15 Jul 2024, 11:39 | 17.7 | 17.7 °C |
| 17 Jun 2024, 10:18 | 16.7 | 16.7 °C |
| 29 May 2024, 10:46 | 16.3 | 16.3 °C |
| 17 Apr 2024, 10:45 | 12.3 | 12.3 °C |
| 21 Mar 2024, 13:24 | 12.4 | 12.4 °C |
| 20 Feb 2024, 12:42 | 10 | 10 °C |
| 18 Jan 2024, 11:09 | 2.6 | 2.6 °C |
| 11 Dec 2023, 13:03 | 8.5 | 8.5 °C |
| 21 Nov 2023, 10:18 | 10.3 | 10.3 °C |
| 16 Oct 2023, 12:35 | 12.7 | 12.7 °C |
pH
code 0061
7.83
Sampled 11 Aug 2026, 51 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 15:03 | 7.83 | 7.83 |
| 22 Jul 2026, 11:11 | 7.8 | 7.8 |
| 17 Jun 2026, 12:30 | 7.68 | 7.68 |
| 21 May 2026, 12:19 | 7.88 | 7.88 |
| 14 Apr 2026, 11:47 | 7.77 | 7.77 |
| 6 Mar 2026, 11:38 | 8.03 | 8.03 |
| 12 Feb 2026, 12:18 | 8.15 | 8.15 |
| 12 Jan 2026, 10:32 | 8.1 | 8.1 |
| 10 Dec 2025, 13:43 | 7.79 | 7.79 |
| 13 Nov 2025, 11:40 | 7.67 | 7.67 |
| 17 Oct 2025, 12:03 | 7.63 | 7.63 |
| 26 Sep 2025, 11:08 | 7.67 | 7.67 |
| 21 Aug 2025, 12:30 | 7.74 | 7.74 |
| 21 Jul 2025, 14:40 | 7.52 | 7.52 |
| 19 Jun 2025, 12:46 | 7.82 | 7.82 |
| 21 May 2025, 12:25 | 8.28 | 8.28 |
| 24 Apr 2025, 11:32 | 7.87 | 7.87 |
| 6 Mar 2025, 10:29 | 7.83 | 7.83 |
| 18 Feb 2025, 10:53 | 7.86 | 7.86 |
| 30 Jan 2025, 12:17 | 7.89 | 7.89 |
| 11 Dec 2024, 11:50 | 7.83 | 7.83 |
| 28 Nov 2024, 11:20 | 7.71 | 7.71 |
| 22 Oct 2024, 11:21 | 7.65 | 7.65 |
| 25 Sep 2024, 10:34 | 7.64 | 7.64 |
| 19 Aug 2024, 12:47 | 7.66 | 7.66 |
| 15 Jul 2024, 11:39 | 7.57 | 7.57 |
| 17 Jun 2024, 10:18 | 7.65 | 7.65 |
| 29 May 2024, 10:46 | 7.73 | 7.73 |
| 17 Apr 2024, 10:45 | 7.75 | 7.75 |
| 21 Mar 2024, 13:24 | 7.76 | 7.76 |
| 20 Feb 2024, 12:42 | 7.9 | 7.9 |
| 18 Jan 2024, 11:09 | 7.88 | 7.88 |
| 11 Dec 2023, 13:03 | 7.87 | 7.87 |
| 21 Nov 2023, 10:18 | 7.66 | 7.66 |
| 16 Oct 2023, 12:35 | 7.72 | 7.72 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.064 mg/l
Sampled 11 Aug 2026, 51 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 15:03 | 0.064 | 0.064 mg/l |
| 22 Jul 2026, 11:11 | 0.087 | 0.087 mg/l |
| 17 Jun 2026, 12:30 | 0.31 | 0.31 mg/l |
| 21 May 2026, 12:19 | 0.52 | 0.52 mg/l |
| 14 Apr 2026, 11:47 | 0.35 | 0.35 mg/l |
| 6 Mar 2026, 11:38 | 0.43 | 0.43 mg/l |
| 12 Feb 2026, 12:18 | 0.23 | 0.23 mg/l |
| 12 Jan 2026, 10:32 | 0.39 | 0.39 mg/l |
| 10 Dec 2025, 13:43 | 0.28 | 0.28 mg/l |
| 13 Nov 2025, 11:40 | 0.18 | 0.18 mg/l |
| 17 Oct 2025, 12:03 | 0.12 | 0.12 mg/l |
| 26 Sep 2025, 11:08 | 0.084 | 0.084 mg/l |
| 21 Aug 2025, 12:30 | 0.15 | 0.15 mg/l |
| 21 Jul 2025, 14:40 | 0.57 | 0.57 mg/l |
| 19 Jun 2025, 12:46 | 0.25 | 0.25 mg/l |
| 21 May 2025, 12:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Apr 2025, 11:32 | 0.27 | 0.27 mg/l |
| 6 Mar 2025, 10:29 | 0.34 | 0.34 mg/l |
| 18 Feb 2025, 10:53 | 0.46 | 0.46 mg/l |
| 30 Jan 2025, 12:17 | 0.24 | 0.24 mg/l |
| 11 Dec 2024, 11:50 | 0.22 | 0.22 mg/l |
| 28 Nov 2024, 11:20 | 0.26 | 0.26 mg/l |
| 22 Oct 2024, 11:21 | 0.2 | 0.2 mg/l |
| 25 Sep 2024, 10:34 | 0.27 | 0.27 mg/l |
| 19 Aug 2024, 12:47 | 0.37 | 0.37 mg/l |
| 15 Jul 2024, 11:39 | 0.55 | 0.55 mg/l |
| 17 Jun 2024, 10:18 | 0.46 | 0.46 mg/l |
| 29 May 2024, 10:46 | 0.46 | 0.46 mg/l |
| 17 Apr 2024, 10:45 | 0.49 | 0.49 mg/l |
| 21 Mar 2024, 13:24 | 0.45 | 0.45 mg/l |
| 20 Feb 2024, 12:42 | 0.3 | 0.3 mg/l |
| 18 Jan 2024, 11:09 | 0.8 | 0.8 mg/l |
| 11 Dec 2023, 13:03 | 0.46 | 0.46 mg/l |
| 21 Nov 2023, 10:18 | 0.25 | 0.25 mg/l |
| 16 Oct 2023, 12:35 | 0.22 | 0.22 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.06 mg/l
Sampled 11 Aug 2026, 51 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 15:03 | 3.06 | 3.06 mg/l |
| 22 Jul 2026, 11:11 | 2.06 | 2.06 mg/l |
| 17 Jun 2026, 12:30 | 2.54 | 2.54 mg/l |
| 21 May 2026, 12:19 | 2.52 | 2.52 mg/l |
| 14 Apr 2026, 11:47 | 2.88 | 2.88 mg/l |
| 6 Mar 2026, 11:38 | 3.41 | 3.41 mg/l |
| 12 Feb 2026, 12:18 | 2.55 | 2.55 mg/l |
| 12 Jan 2026, 10:32 | 4.23 | 4.23 mg/l |
| 10 Dec 2025, 13:43 | 3.02 | 3.02 mg/l |
| 13 Nov 2025, 11:40 | 2.51 | 2.51 mg/l |
| 17 Oct 2025, 12:03 | 5.62 | 5.62 mg/l |
| 26 Sep 2025, 11:08 | 3.95 | 3.95 mg/l |
| 21 Aug 2025, 12:30 | 3.96 | 3.96 mg/l |
| 21 Jul 2025, 14:40 | 2.14 | 2.14 mg/l |
| 19 Jun 2025, 12:46 | 2.71 | 2.71 mg/l |
| 21 May 2025, 12:25 | 2.56 | 2.56 mg/l |
| 24 Apr 2025, 11:32 | 2.01 | 2.01 mg/l |
| 6 Mar 2025, 10:29 | 3.72 | 3.72 mg/l |
| 18 Feb 2025, 10:53 | 3.63 | 3.63 mg/l |
| 30 Jan 2025, 12:17 | 3.64 | 3.64 mg/l |
| 11 Dec 2024, 11:50 | 2.84 | 2.84 mg/l |
| 28 Nov 2024, 11:20 | 2.94 | 2.94 mg/l |
| 22 Oct 2024, 11:21 | 2.52 | 2.52 mg/l |
| 25 Sep 2024, 10:34 | 3.01 | 3.01 mg/l |
| 19 Aug 2024, 12:47 | 2.26 | 2.26 mg/l |
| 15 Jul 2024, 11:39 | 2.36 | 2.36 mg/l |
| 17 Jun 2024, 10:18 | 2.38 | 2.38 mg/l |
| 29 May 2024, 10:46 | 2.47 | 2.47 mg/l |
| 17 Apr 2024, 10:45 | 3.39 | 3.39 mg/l |
| 21 Mar 2024, 13:24 | 3.5 | 3.5 mg/l |
| 20 Feb 2024, 12:42 | 3.13 | 3.13 mg/l |
| 18 Jan 2024, 11:09 | 4.51 | 4.51 mg/l |
| 11 Dec 2023, 13:03 | 1.94 | 1.94 mg/l |
| 21 Nov 2023, 10:18 | 2.52 | 2.52 mg/l |
| 16 Oct 2023, 12:35 | 2.49 | 2.49 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.57 mg/l
Sampled 11 Aug 2026, 51 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 15:03 | 0.57 | 0.57 mg/l |
| 22 Jul 2026, 11:11 | 0.57 | 0.57 mg/l |
| 17 Jun 2026, 12:30 | 0.54 | 0.54 mg/l |
| 21 May 2026, 12:19 | 0.45 | 0.45 mg/l |
| 14 Apr 2026, 11:47 | 0.29 | 0.29 mg/l |
| 6 Mar 2026, 11:38 | 0.27 | 0.27 mg/l |
| 12 Feb 2026, 12:18 | 0.19 | 0.19 mg/l |
| 12 Jan 2026, 10:32 | 0.27 | 0.27 mg/l |
| 10 Dec 2025, 13:43 | 0.22 | 0.22 mg/l |
| 13 Nov 2025, 11:40 | 0.35 | 0.35 mg/l |
| 17 Oct 2025, 12:03 | 0.47 | 0.47 mg/l |
| 26 Sep 2025, 11:08 | 0.5 | 0.5 mg/l |
| 21 Aug 2025, 12:30 | 0.47 | 0.47 mg/l |
| 21 Jul 2025, 14:40 | 0.46 | 0.46 mg/l |
| 19 Jun 2025, 12:46 | 0.47 | 0.47 mg/l |
| 21 May 2025, 12:25 | 0.27 | 0.27 mg/l |
| 24 Apr 2025, 11:32 | 0.2 | 0.2 mg/l |
| 6 Mar 2025, 10:29 | 0.21 | 0.21 mg/l |
| 18 Feb 2025, 10:53 | 0.25 | 0.25 mg/l |
| 30 Jan 2025, 12:17 | 0.21 | 0.21 mg/l |
| 11 Dec 2024, 11:50 | 0.22 | 0.22 mg/l |
| 28 Nov 2024, 11:20 | 0.21 | 0.21 mg/l |
| 22 Oct 2024, 11:21 | 0.31 | 0.31 mg/l |
| 25 Sep 2024, 10:34 | 0.23 | 0.23 mg/l |
| 19 Aug 2024, 12:47 | 0.4 | 0.4 mg/l |
| 15 Jul 2024, 11:39 | 0.33 | 0.33 mg/l |
| 17 Jun 2024, 10:18 | 0.32 | 0.32 mg/l |
| 29 May 2024, 10:46 | 0.35 | 0.35 mg/l |
| 17 Apr 2024, 10:45 | 0.19 | 0.19 mg/l |
| 21 Mar 2024, 13:24 | 0.17 | 0.17 mg/l |
| 20 Feb 2024, 12:42 | 0.11 | 0.11 mg/l |
| 18 Jan 2024, 11:09 | 0.23 | 0.23 mg/l |
| 11 Dec 2023, 13:03 | 0.13 | 0.13 mg/l |
| 21 Nov 2023, 10:18 | 0.23 | 0.23 mg/l |
| 16 Oct 2023, 12:35 | 0.23 | 0.23 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
907 µS/cm
Sampled 11 Aug 2026, 51 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 15:03 | 907 | 907 µS/cm |
| 22 Jul 2026, 11:11 | 861 | 861 µS/cm |
| 17 Jun 2026, 12:30 | 793 | 793 µS/cm |
| 21 May 2026, 12:19 | 843 | 843 µS/cm |
| 14 Apr 2026, 11:47 | 839 | 839 µS/cm |
| 6 Mar 2026, 11:38 | 826 | 826 µS/cm |
| 12 Feb 2026, 12:18 | 573 | 573 µS/cm |
| 12 Jan 2026, 10:32 | 881 | 881 µS/cm |
| 10 Dec 2025, 13:43 | 698 | 698 µS/cm |
| 13 Nov 2025, 11:40 | 682 | 682 µS/cm |
| 17 Oct 2025, 12:03 | 860 | 860 µS/cm |
| 26 Sep 2025, 11:08 | 811 | 811 µS/cm |
| 21 Aug 2025, 12:30 | 840 | 840 µS/cm |
| 21 Jul 2025, 14:40 | 590 | 590 µS/cm |
| 19 Jun 2025, 12:46 | 799 | 799 µS/cm |
| 21 May 2025, 12:25 | 864 | 864 µS/cm |
| 24 Apr 2025, 11:32 | 773 | 773 µS/cm |
| 6 Mar 2025, 10:29 | 853 | 853 µS/cm |
| 18 Feb 2025, 10:53 | 822 | 822 µS/cm |
| 30 Jan 2025, 12:17 | 732 | 732 µS/cm |
| 11 Dec 2024, 11:50 | 663 | 663 µS/cm |
| 28 Nov 2024, 11:20 | 606 | 606 µS/cm |
| 22 Oct 2024, 11:21 | 647 | 647 µS/cm |
| 25 Sep 2024, 10:34 | 644 | 644 µS/cm |
| 19 Aug 2024, 12:47 | 863 | 863 µS/cm |
| 15 Jul 2024, 11:39 | 698 | 698 µS/cm |
| 17 Jun 2024, 10:18 | 718 | 718 µS/cm |
| 29 May 2024, 10:46 | 715 | 715 µS/cm |
| 17 Apr 2024, 10:45 | 876 | 876 µS/cm |
| 21 Mar 2024, 13:24 | 825 | 825 µS/cm |
| 20 Feb 2024, 12:42 | 697 | 697 µS/cm |
| 18 Jan 2024, 11:09 | 949 | 949 µS/cm |
| 11 Dec 2023, 13:03 | 627 | 627 µS/cm |
| 21 Nov 2023, 10:18 | 650 | 650 µS/cm |
| 16 Oct 2023, 12:35 | 640 | 640 µS/cm |
Everything measured here
96 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 96 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 35 | Oct 2023 – Aug 2026 | 91.2% 11 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 35 | Oct 2023 – Aug 2026 | 7.94 mg/l 11 Aug 2026 |
| Temperature of Water 0076 | River water | 35 | Oct 2023 – Aug 2026 | 22.1 °C 11 Aug 2026 |
| pH 0061 | River water | 35 | Oct 2023 – Aug 2026 | 7.83 11 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 35 | Oct 2023 – Aug 2026 | 0.064 mg/l 11 Aug 2026 |
| Nitrate as N 0117 | River water | 35 | Oct 2023 – Aug 2026 | 3.06 mg/l 11 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 35 | Oct 2023 – Aug 2026 | 0.57 mg/l 11 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 35 | Oct 2023 – Aug 2026 | 907 µS/cm 11 Aug 2026 |
| (Perfluorohexanesulfonyl)[3-(trimethylazaniumyl)propyl]azanide 2890 | River water | 1 | Apr 2026 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Apr 2026 – Apr 2026 | below 0.002 µg/l 14 Apr 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Apr 2026 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 15 | Oct 2023 – Apr 2026 | below 0.004 µg/l 14 Apr 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Apr 2026 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Apr 2026 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Apr 2026 – Apr 2026 | below 0.004 µg/l 14 Apr 2026 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Apr 2026 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Apr 2026 – Apr 2026 | 0.0073 µg/l 14 Apr 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 15 | Oct 2023 – Apr 2026 | 0.0014 µg/l 14 Apr 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Apr 2026 – Apr 2026 | below 0.01 µg/l 14 Apr 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Apr 2026 – Apr 2026 | below 0.004 µg/l 14 Apr 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Apr 2026 – Apr 2026 | below 0.01 µg/l 14 Apr 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Apr 2026 – Apr 2026 | below 0.004 µg/l 14 Apr 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Apr 2026 – Apr 2026 | below 0.01 µg/l 14 Apr 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 35 | Oct 2023 – Aug 2026 | 230 mg/l 11 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 35 | Oct 2023 – Aug 2026 | 0.00192 mg/l 11 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 26 | Feb 2024 – May 2026 | 3.9 mg/l 21 May 2026 |
| Cadmium 0108 | River water | 35 | Oct 2023 – Aug 2026 | 0.019 µg/l 11 Aug 2026 |
| Copper 6452 | River water | 35 | Oct 2023 – Aug 2026 | 1.8 µg/l 11 Aug 2026 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 24 | Oct 2023 – Aug 2026 | 1 text result 11 Aug 2026 |
| HCH -gamma :- {Lindane} 0499 | River water | 32 | Oct 2023 – Aug 2026 | below 0.003 µg/l 11 Aug 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Apr 2026 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| LCMS Screen : Semi Quantitative 7299 | River water | 2 | May 2026 – Jul 2026 | 1 text result 22 Jul 2026 |
| Lead 0050 | River water | 35 | Oct 2023 – Aug 2026 | 1 µg/l 11 Aug 2026 |
| Mercury 0105 | River water | 35 | Oct 2023 – Aug 2026 | below 0.01 µg/l 11 Aug 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 15 | Oct 2023 – Apr 2026 | below 0.002 µg/l 14 Apr 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 15 | Oct 2023 – Apr 2026 | below 0.002 µg/l 14 Apr 2026 |
| Nickel 6462 | River water | 31 | Feb 2024 – Aug 2026 | 3.5 µg/l 11 Aug 2026 |
| Nitrite as N 0118 | River water | 35 | Oct 2023 – Aug 2026 | 0.045 mg/l 11 Aug 2026 |
| Nitrogen, Total as N 9686 | River water | 28 | Oct 2023 – Aug 2026 | 4 mg/l 11 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 35 | Oct 2023 – Aug 2026 | 3.1 mg/l 11 Aug 2026 |
| PCB - 028 9768 | River water | 33 | Oct 2023 – Aug 2026 | below 0.001 µg/l 11 Aug 2026 |
| PCB - 052 9769 | River water | 33 | Oct 2023 – Aug 2026 | below 0.001 µg/l 11 Aug 2026 |
| PCB - 101 9770 | River water | 33 | Oct 2023 – Aug 2026 | below 0.001 µg/l 11 Aug 2026 |
| PCB - 118 9771 | River water | 33 | Oct 2023 – Aug 2026 | below 0.001 µg/l 11 Aug 2026 |
| PCB - 138 9772 | River water | 33 | Oct 2023 – Aug 2026 | below 0.001 µg/l 11 Aug 2026 |
| PCB - 153 9773 | River water | 33 | Oct 2023 – Aug 2026 | below 0.001 µg/l 11 Aug 2026 |
| PCB - 180 9774 | River water | 34 | Oct 2023 – Aug 2026 | below 0.002 µg/l 11 Aug 2026 |
| PCB : Total 0753 | River water | 32 | Oct 2023 – Aug 2026 | below 0.008 µg/l 11 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 13 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 15 | Oct 2023 – Apr 2026 | 0.0005 µg/l 14 Apr 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 13 | Oct 2023 – Apr 2026 | 0.0077 µg/l 14 Apr 2026 |
| Perfluorobutanoic acid 2995 | River water | 13 | Oct 2023 – Apr 2026 | 0.0064 µg/l 14 Apr 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 15 | Oct 2023 – Apr 2026 | 0.0012 µg/l 14 Apr 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| Perfluorodecanoic acid 8892 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 15 | Oct 2023 – Apr 2026 | below 0.005 µg/l 14 Apr 2026 |
| Perfluorododecanoic acid 8894 | River water | 15 | Oct 2023 – Apr 2026 | below 0.002 µg/l 14 Apr 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| Perfluoroheptanoic acid 8889 | River water | 14 | Oct 2023 – Apr 2026 | 0.0033 µg/l 14 Apr 2026 |
| Perfluorohexane sulfonamido amine 2874 | River water | 1 | Apr 2026 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 15 | Oct 2023 – Apr 2026 | below 0.0005 µg/l 14 Apr 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 15 | Oct 2023 – Apr 2026 | 0.0011 µg/l 14 Apr 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 15 | Oct 2023 – Apr 2026 | 0.0046 µg/l 14 Apr 2026 |
| Perfluorohexanoic acid 8888 | River water | 14 | Oct 2023 – Apr 2026 | 0.0076 µg/l 14 Apr 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| Perfluorononanoic acid 8891 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 15 | Oct 2023 – Apr 2026 | below 0.002 µg/l 14 Apr 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 14 | Oct 2023 – Feb 2025 | below 0.001 µg/l 18 Feb 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 13 | Oct 2023 – Apr 2026 | 0.0039 µg/l 14 Apr 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 13 | Oct 2023 – Apr 2026 | 0.0052 µg/l 14 Apr 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Apr 2026 – Apr 2026 | 0.0091 µg/l 14 Apr 2026 |
| Perfluorooctanoic acid 8890 | River water | 14 | Oct 2023 – Apr 2026 | 0.006 µg/l 14 Apr 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 14 | Oct 2023 – Apr 2026 | 0.0006 µg/l 14 Apr 2026 |
| Perfluoropentanoic acid 8887 | River water | 14 | Oct 2023 – Apr 2026 | 0.0088 µg/l 14 Apr 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 15 | Oct 2023 – Apr 2026 | below 0.006 µg/l 14 Apr 2026 |
| Perfluorotridecanoic acid 2955 | River water | 15 | Oct 2023 – Apr 2026 | below 0.002 µg/l 14 Apr 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 15 | Oct 2023 – Apr 2026 | below 0.004 µg/l 14 Apr 2026 |
| Perfluoroundecanoic acid 8893 | River water | 15 | Oct 2023 – Apr 2026 | below 0.001 µg/l 14 Apr 2026 |
| Phosphorus, Total as P 0348 | River water | 27 | Oct 2023 – Aug 2026 | 0.61 mg/l 11 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 30 | Oct 2023 – Aug 2026 | below 3 mg/l 11 Aug 2026 |
| Zinc 6455 | River water | 35 | Oct 2023 – Aug 2026 | 6.9 µg/l 11 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.