Ash above Thames
EA name: ASH ABOVE THAMES
Environment Agency sampling point TH-PTHR0005 · 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
- 21 Sep 2026, 10:4110 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 36 since 23 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) · results completed 23 Sep 2026
- Where
- National Grid 509640, 167510As published, to the nearest 10 m. Open in a map
- River, by its own name
- Ash
- River, by the map
- River AshPlaced on the river its name gives, 13 m from the line.
- Next gauge downstream
- Molesey Lock On the River Thames · 6.4 km along the river (the path rests on a repair to the map)
- Nearest gauge upstream
- Knowle Green On the River Ash · 8.7 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (31 samples)
Monitoring (national agency policy) (5 samples)
Results here were completed a median of 4 days after the sample was taken (2 to 15 days, 13 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
81.7%
Sampled 21 Sep 2026, 10 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 10:41 | 81.7 | 81.7% |
| 7 Aug 2026, 09:57 | 79.6 | 79.6% |
| 20 Jul 2026, 11:12 | 87.3 | 87.3% |
| 18 Jun 2026, 12:30 | 81.3 | 81.3% |
| 1 May 2026, 10:58 | 89.8 | 89.8% |
| 15 Apr 2026, 10:57 | 98.6 | 98.6% |
| 2 Mar 2026, 11:15 | 88.9 | 88.9% |
| 2 Feb 2026, 09:51 | 86.8 | 86.8% |
| 6 Jan 2026, 11:52 | 93.9 | 93.9% |
| 10 Dec 2025, 09:52 | 82.6 | 82.6% |
| 7 Nov 2025, 10:31 | 81.8 | 81.8% |
| 10 Oct 2025, 11:45 | 75.4 | 75.4% |
| 22 Sep 2025, 13:09 | 93.5 | 93.5% |
| 5 Aug 2025, 11:45 | 83.1 | 83.1% |
| 3 Jul 2025, 11:31 | 74.3 | 74.3% |
| 9 Jun 2025, 09:36 | 70 | 70% |
| 15 May 2025, 10:37 | 77.9 | 77.9% |
| 24 Apr 2025, 09:28 | 84.2 | 84.2% |
| 5 Mar 2025, 11:38 | 99.8 | 99.8% |
| 18 Feb 2025, 11:48 | 99.8 | 99.8% |
| 23 Jan 2025, 09:58 | 92.5 | 92.5% |
| 5 Dec 2024, 10:44 | 83.4 | 83.4% |
| 28 Nov 2024, 09:36 | 78.8 | 78.8% |
| 22 Oct 2024, 09:47 | 74.4 | 74.4% |
| 19 Sep 2024, 11:51 | 85.4 | 85.4% |
| 23 Aug 2024, 10:27 | 70.2 | 70.2% |
| 16 Jul 2024, 11:47 | 67.2 | 67.2% |
| 19 Jun 2024, 10:43 | 87.1 | 87.1% |
| 9 May 2024, 11:04 | 98.6 | 98.6% |
| 23 Apr 2024, 09:44 | 94.6 | 94.6% |
| 21 Mar 2024, 11:12 | 103.1 | 103.1% |
| 20 Feb 2024, 10:55 | 87.8 | 87.8% |
| 17 Jan 2024, 12:22 | 87.2 | 87.2% |
| 12 Dec 2023, 11:19 | 86.6 | 86.6% |
| 20 Nov 2023, 11:36 | 79.2 | 79.2% |
| 23 Oct 2023, 10:40 | 77.4 | 77.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.92 mg/l
Sampled 21 Sep 2026, 10 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 10:41 | 7.92 | 7.92 mg/l |
| 7 Aug 2026, 09:57 | 7.37 | 7.37 mg/l |
| 20 Jul 2026, 11:12 | 7.87 | 7.87 mg/l |
| 18 Jun 2026, 12:30 | 7.36 | 7.36 mg/l |
| 1 May 2026, 10:58 | 9.05 | 9.05 mg/l |
| 15 Apr 2026, 10:57 | 10.6 | 10.6 mg/l |
| 2 Mar 2026, 11:15 | 10.1 | 10.1 mg/l |
| 2 Feb 2026, 09:51 | 10.3 | 10.3 mg/l |
| 6 Jan 2026, 11:52 | 12.8 | 12.8 mg/l |
| 10 Dec 2025, 09:52 | 9.37 | 9.37 mg/l |
| 7 Nov 2025, 10:31 | 8.5 | 8.5 mg/l |
| 10 Oct 2025, 11:45 | 7.67 | 7.67 mg/l |
| 22 Sep 2025, 13:09 | 9.4 | 9.4 mg/l |
| 5 Aug 2025, 11:45 | 7.78 | 7.78 mg/l |
| 3 Jul 2025, 11:31 | 6.75 | 6.75 mg/l |
| 9 Jun 2025, 09:36 | 6.92 | 6.92 mg/l |
| 15 May 2025, 10:37 | 7.78 | 7.78 mg/l |
| 24 Apr 2025, 09:28 | 9.14 | 9.14 mg/l |
| 5 Mar 2025, 11:38 | 12.1 | 12.1 mg/l |
| 18 Feb 2025, 11:48 | 12.9 | 12.9 mg/l |
| 23 Jan 2025, 09:58 | 11.7 | 11.7 mg/l |
| 5 Dec 2024, 10:44 | 9.51 | 9.51 mg/l |
| 28 Nov 2024, 09:36 | 9.62 | 9.62 mg/l |
| 22 Oct 2024, 09:47 | 7.93 | 7.93 mg/l |
| 19 Sep 2024, 11:51 | 8.06 | 8.06 mg/l |
| 23 Aug 2024, 10:27 | 6.71 | 6.71 mg/l |
| 16 Jul 2024, 11:47 | 6.48 | 6.48 mg/l |
| 19 Jun 2024, 10:43 | 8.28 | 8.28 mg/l |
| 9 May 2024, 11:04 | 9.69 | 9.69 mg/l |
| 23 Apr 2024, 09:44 | 10.4 | 10.4 mg/l |
| 21 Mar 2024, 11:12 | 11.1 | 11.1 mg/l |
| 20 Feb 2024, 10:55 | 10.1 | 10.1 mg/l |
| 17 Jan 2024, 12:22 | 11.7 | 11.7 mg/l |
| 12 Dec 2023, 11:19 | 10.1 | 10.1 mg/l |
| 20 Nov 2023, 11:36 | 8.8 | 8.8 mg/l |
| 23 Oct 2023, 10:40 | 8.3 | 8.3 mg/l |
Water temperature
code 0076 · °C
16.7 °C
Sampled 21 Sep 2026, 10 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 10:41 | 16.7 | 16.7 °C |
| 7 Aug 2026, 09:57 | 19 | 19 °C |
| 20 Jul 2026, 11:12 | 20.3 | 20.3 °C |
| 18 Jun 2026, 12:30 | 20.1 | 20.1 °C |
| 1 May 2026, 10:58 | 14.9 | 14.9 °C |
| 15 Apr 2026, 10:57 | 12.2 | 12.2 °C |
| 2 Mar 2026, 11:15 | 9.8 | 9.8 °C |
| 2 Feb 2026, 09:51 | 7.8 | 7.8 °C |
| 6 Jan 2026, 11:52 | 2.6 | 2.6 °C |
| 10 Dec 2025, 09:52 | 9.7 | 9.7 °C |
| 7 Nov 2025, 10:31 | 13.5 | 13.5 °C |
| 10 Oct 2025, 11:45 | 14.5 | 14.5 °C |
| 22 Sep 2025, 13:09 | 15 | 15 °C |
| 5 Aug 2025, 11:45 | 18.4 | 18.4 °C |
| 3 Jul 2025, 11:31 | 19.9 | 19.9 °C |
| 9 Jun 2025, 09:36 | 15.8 | 15.8 °C |
| 15 May 2025, 10:37 | 15.3 | 15.3 °C |
| 24 Apr 2025, 09:28 | 11.6 | 11.6 °C |
| 5 Mar 2025, 11:38 | 6.9 | 6.9 °C |
| 18 Feb 2025, 11:48 | 4.4 | 4.4 °C |
| 23 Jan 2025, 09:58 | 5.2 | 5.2 °C |
| 5 Dec 2024, 10:44 | 9.5 | 9.5 °C |
| 28 Nov 2024, 09:36 | 6.7 | 6.7 °C |
| 22 Oct 2024, 09:47 | 12.4 | 12.4 °C |
| 19 Sep 2024, 11:51 | 18 | 18 °C |
| 23 Aug 2024, 10:27 | 17.4 | 17.4 °C |
| 16 Jul 2024, 11:47 | 17 | 17 °C |
| 19 Jun 2024, 10:43 | 17.7 | 17.7 °C |
| 9 May 2024, 11:04 | 16.1 | 16.1 °C |
| 23 Apr 2024, 09:44 | 10.9 | 10.9 °C |
| 21 Mar 2024, 11:12 | 11.8 | 11.8 °C |
| 20 Feb 2024, 10:55 | 9.2 | 9.2 °C |
| 17 Jan 2024, 12:22 | 3.2 | 3.2 °C |
| 12 Dec 2023, 11:19 | 8.4 | 8.4 °C |
| 20 Nov 2023, 11:36 | 10.6 | 10.6 °C |
| 23 Oct 2023, 10:40 | 12.1 | 12.1 °C |
pH
code 0061
7.9
Sampled 21 Sep 2026, 10 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 10:41 | 7.9 | 7.9 |
| 7 Aug 2026, 09:57 | 7.91 | 7.91 |
| 20 Jul 2026, 11:12 | 7.72 | 7.72 |
| 18 Jun 2026, 12:30 | 7.92 | 7.92 |
| 1 May 2026, 10:58 | 8.01 | 8.01 |
| 15 Apr 2026, 10:57 | 8.42 | 8.42 |
| 2 Mar 2026, 11:15 | 8.01 | 8.01 |
| 2 Feb 2026, 09:51 | 8.01 | 8.01 |
| 6 Jan 2026, 11:52 | 8.09 | 8.09 |
| 10 Dec 2025, 09:52 | 7.88 | 7.88 |
| 7 Nov 2025, 10:31 | 7.96 | 7.96 |
| 10 Oct 2025, 11:45 | 7.92 | 7.92 |
| 22 Sep 2025, 13:09 | 7.93 | 7.93 |
| 5 Aug 2025, 11:45 | 7.97 | 7.97 |
| 3 Jul 2025, 11:31 | 7.87 | 7.87 |
| 9 Jun 2025, 09:36 | 7.76 | 7.76 |
| 15 May 2025, 10:37 | 7.81 | 7.81 |
| 24 Apr 2025, 09:28 | 7.92 | 7.92 |
| 5 Mar 2025, 11:38 | 8 | 8 |
| 18 Feb 2025, 11:48 | 8.07 | 8.07 |
| 23 Jan 2025, 09:58 | 8.04 | 8.04 |
| 5 Dec 2024, 10:44 | 7.84 | 7.84 |
| 28 Nov 2024, 09:36 | 7.72 | 7.72 |
| 22 Oct 2024, 09:47 | 7.64 | 7.64 |
| 19 Sep 2024, 11:51 | 7.81 | 7.81 |
| 23 Aug 2024, 10:27 | 7.8 | 7.8 |
| 16 Jul 2024, 11:47 | 7.79 | 7.79 |
| 19 Jun 2024, 10:43 | 8.05 | 8.05 |
| 9 May 2024, 11:04 | 7.97 | 7.97 |
| 23 Apr 2024, 09:44 | 7.86 | 7.86 |
| 21 Mar 2024, 11:12 | 8.08 | 8.08 |
| 20 Feb 2024, 10:55 | 7.64 | 7.64 |
| 17 Jan 2024, 12:22 | 7.98 | 7.98 |
| 12 Dec 2023, 11:19 | 7.77 | 7.77 |
| 20 Nov 2023, 11:36 | 7.77 | 7.77 |
| 23 Oct 2023, 10:40 | 7.86 | 7.86 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.031 mg/l
Sampled 21 Sep 2026, 10 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 10:41 | 0.031 | 0.031 mg/l |
| 7 Aug 2026, 09:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jul 2026, 11:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jun 2026, 12:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 May 2026, 10:58 | 0.27 | 0.27 mg/l |
| 15 Apr 2026, 10:57 | 0.043 | 0.043 mg/l |
| 2 Mar 2026, 11:15 | 0.49 | 0.49 mg/l |
| 2 Feb 2026, 09:51 | 0.79 | 0.79 mg/l |
| 6 Jan 2026, 11:52 | 0.13 | 0.13 mg/l |
| 10 Dec 2025, 09:52 | 0.21 | 0.21 mg/l |
| 7 Nov 2025, 10:31 | 0.039 | 0.039 mg/l |
| 10 Oct 2025, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Sep 2025, 13:09 | 0.038 | 0.038 mg/l |
| 5 Aug 2025, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2025, 11:31 | 0.03 | 0.03 mg/l |
| 9 Jun 2025, 09:36 | 0.1 | 0.1 mg/l |
| 15 May 2025, 10:37 | 0.12 | 0.12 mg/l |
| 24 Apr 2025, 09:28 | 0.14 | 0.14 mg/l |
| 5 Mar 2025, 11:38 | 0.37 | 0.37 mg/l |
| 18 Feb 2025, 11:48 | 0.28 | 0.28 mg/l |
| 23 Jan 2025, 09:58 | 0.2 | 0.2 mg/l |
| 5 Dec 2024, 10:44 | 0.18 | 0.18 mg/l |
| 28 Nov 2024, 09:36 | 0.21 | 0.21 mg/l |
| 22 Oct 2024, 09:47 | 0.23 | 0.23 mg/l |
| 19 Sep 2024, 11:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Aug 2024, 10:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2024, 11:47 | 0.061 | 0.061 mg/l |
| 9 May 2024, 11:04 | 0.16 | 0.16 mg/l |
| 23 Apr 2024, 09:44 | 0.2 | 0.2 mg/l |
| 21 Mar 2024, 11:12 | 0.19 | 0.19 mg/l |
| 20 Feb 2024, 10:55 | 0.48 | 0.48 mg/l |
| 17 Jan 2024, 12:22 | 1.3 | 1.3 mg/l |
| 12 Dec 2023, 11:19 | 0.19 | 0.19 mg/l |
| 20 Nov 2023, 11:36 | 0.13 | 0.13 mg/l |
| 23 Oct 2023, 10:40 | 0.12 | 0.12 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.66 mg/l
Sampled 21 Sep 2026, 10 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 10:41 | 6.66 | 6.66 mg/l |
| 7 Aug 2026, 09:57 | 5.66 | 5.66 mg/l |
| 20 Jul 2026, 11:12 | 5.96 | 5.96 mg/l |
| 18 Jun 2026, 12:30 | 1.85 | 1.85 mg/l |
| 1 May 2026, 10:58 | 5.79 | 5.79 mg/l |
| 15 Apr 2026, 10:57 | 7.47 | 7.47 mg/l |
| 2 Mar 2026, 11:15 | 4.73 | 4.73 mg/l |
| 2 Feb 2026, 09:51 | 5.34 | 5.34 mg/l |
| 6 Jan 2026, 11:52 | 6.77 | 6.77 mg/l |
| 10 Dec 2025, 09:52 | 7.43 | 7.43 mg/l |
| 7 Nov 2025, 10:31 | 5.95 | 5.95 mg/l |
| 10 Oct 2025, 11:45 | 5.47 | 5.47 mg/l |
| 22 Sep 2025, 13:09 | 7.25 | 7.25 mg/l |
| 5 Aug 2025, 11:45 | 4.58 | 4.58 mg/l |
| 3 Jul 2025, 11:31 | 5.45 | 5.45 mg/l |
| 9 Jun 2025, 09:36 | 5.51 | 5.51 mg/l |
| 15 May 2025, 10:37 | 5.68 | 5.68 mg/l |
| 24 Apr 2025, 09:28 | 5.45 | 5.45 mg/l |
| 5 Mar 2025, 11:38 | 4.47 | 4.47 mg/l |
| 18 Feb 2025, 11:48 | 5.47 | 5.47 mg/l |
| 23 Jan 2025, 09:58 | 5.57 | 5.57 mg/l |
| 5 Dec 2024, 10:44 | 4.45 | 4.45 mg/l |
| 28 Nov 2024, 09:36 | 3.96 | 3.96 mg/l |
| 22 Oct 2024, 09:47 | 4.41 | 4.41 mg/l |
| 19 Sep 2024, 11:51 | 5.37 | 5.37 mg/l |
| 23 Aug 2024, 10:27 | 4.67 | 4.67 mg/l |
| 16 Jul 2024, 11:47 | 2.47 | 2.47 mg/l |
| 9 May 2024, 11:04 | 4.13 | 4.13 mg/l |
| 23 Apr 2024, 09:44 | 5.75 | 5.75 mg/l |
| 21 Mar 2024, 11:12 | 4.67 | 4.67 mg/l |
| 20 Feb 2024, 10:55 | 6.26 | 6.26 mg/l |
| 17 Jan 2024, 12:22 | 4.17 | 4.17 mg/l |
| 12 Dec 2023, 11:19 | 5.36 | 5.36 mg/l |
| 20 Nov 2023, 11:36 | 4.64 | 4.64 mg/l |
| 23 Oct 2023, 10:40 | 4.64 | 4.64 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.073 mg/l
Sampled 21 Sep 2026, 10 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 10:41 | 0.073 | 0.073 mg/l |
| 7 Aug 2026, 09:57 | 0.087 | 0.087 mg/l |
| 20 Jul 2026, 11:12 | 0.055 | 0.055 mg/l |
| 18 Jun 2026, 12:30 | 0.32 | 0.32 mg/l |
| 1 May 2026, 10:58 | 0.11 | 0.11 mg/l |
| 15 Apr 2026, 10:57 | 0.086 | 0.086 mg/l |
| 2 Mar 2026, 11:15 | 0.12 | 0.12 mg/l |
| 2 Feb 2026, 09:51 | 0.14 | 0.14 mg/l |
| 6 Jan 2026, 11:52 | 0.11 | 0.11 mg/l |
| 10 Dec 2025, 09:52 | 0.16 | 0.16 mg/l |
| 7 Nov 2025, 10:31 | 0.16 | 0.16 mg/l |
| 10 Oct 2025, 11:45 | 0.14 | 0.14 mg/l |
| 22 Sep 2025, 13:09 | 0.19 | 0.19 mg/l |
| 5 Aug 2025, 11:45 | 0.093 | 0.093 mg/l |
| 3 Jul 2025, 11:31 | 0.097 | 0.097 mg/l |
| 9 Jun 2025, 09:36 | 0.07 | 0.07 mg/l |
| 15 May 2025, 10:37 | 0.076 | 0.076 mg/l |
| 24 Apr 2025, 09:28 | 0.065 | 0.065 mg/l |
| 5 Mar 2025, 11:38 | 0.076 | 0.076 mg/l |
| 18 Feb 2025, 11:48 | 0.08 | 0.08 mg/l |
| 23 Jan 2025, 09:58 | 0.091 | 0.091 mg/l |
| 5 Dec 2024, 10:44 | 0.17 | 0.17 mg/l |
| 28 Nov 2024, 09:36 | 0.15 | 0.15 mg/l |
| 22 Oct 2024, 09:47 | 0.13 | 0.13 mg/l |
| 19 Sep 2024, 11:51 | 0.2 | 0.2 mg/l |
| 23 Aug 2024, 10:27 | 0.25 | 0.25 mg/l |
| 16 Jul 2024, 11:47 | 0.24 | 0.24 mg/l |
| 9 May 2024, 11:04 | 0.28 | 0.28 mg/l |
| 23 Apr 2024, 09:44 | 0.2 | 0.2 mg/l |
| 21 Mar 2024, 11:12 | 0.28 | 0.28 mg/l |
| 20 Feb 2024, 10:55 | 0.26 | 0.26 mg/l |
| 17 Jan 2024, 12:22 | 0.2 | 0.2 mg/l |
| 12 Dec 2023, 11:19 | 0.27 | 0.27 mg/l |
| 20 Nov 2023, 11:36 | 0.3 | 0.3 mg/l |
| 23 Oct 2023, 10:40 | 0.22 | 0.22 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
706 µS/cm
Sampled 21 Sep 2026, 10 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 10:41 | 706 | 706 µS/cm |
| 7 Aug 2026, 09:57 | 676 | 676 µS/cm |
| 20 Jul 2026, 11:12 | 649 | 649 µS/cm |
| 18 Jun 2026, 12:30 | 815 | 815 µS/cm |
| 1 May 2026, 10:58 | 654 | 654 µS/cm |
| 15 Apr 2026, 10:57 | 673 | 673 µS/cm |
| 2 Mar 2026, 11:15 | 718 | 718 µS/cm |
| 2 Feb 2026, 09:51 | 752 | 752 µS/cm |
| 6 Jan 2026, 11:52 | 708 | 708 µS/cm |
| 10 Dec 2025, 09:52 | 719 | 719 µS/cm |
| 7 Nov 2025, 10:31 | 697 | 697 µS/cm |
| 10 Oct 2025, 11:45 | 691 | 691 µS/cm |
| 22 Sep 2025, 13:09 | 682 | 682 µS/cm |
| 5 Aug 2025, 11:45 | 626 | 626 µS/cm |
| 3 Jul 2025, 11:31 | 698 | 698 µS/cm |
| 9 Jun 2025, 09:36 | 668 | 668 µS/cm |
| 15 May 2025, 10:37 | 673 | 673 µS/cm |
| 24 Apr 2025, 09:28 | 655 | 655 µS/cm |
| 5 Mar 2025, 11:38 | 730 | 730 µS/cm |
| 18 Feb 2025, 11:48 | 666 | 666 µS/cm |
| 23 Jan 2025, 09:58 | 668 | 668 µS/cm |
| 5 Dec 2024, 10:44 | 709 | 709 µS/cm |
| 28 Nov 2024, 09:36 | 629 | 629 µS/cm |
| 22 Oct 2024, 09:47 | 652 | 652 µS/cm |
| 19 Sep 2024, 11:51 | 650 | 650 µS/cm |
| 23 Aug 2024, 10:27 | 693 | 693 µS/cm |
| 16 Jul 2024, 11:47 | 635 | 635 µS/cm |
| 19 Jun 2024, 10:43 | 625 | 625 µS/cm |
| 9 May 2024, 11:04 | 653 | 653 µS/cm |
| 23 Apr 2024, 09:44 | 658 | 658 µS/cm |
| 21 Mar 2024, 11:12 | 662 | 662 µS/cm |
| 20 Feb 2024, 10:55 | 757 | 757 µS/cm |
| 17 Jan 2024, 12:22 | 868 | 868 µS/cm |
| 12 Dec 2023, 11:19 | 689 | 689 µS/cm |
| 20 Nov 2023, 11:36 | 685 | 685 µS/cm |
| 23 Oct 2023, 10:40 | 664 | 664 µS/cm |
Everything measured here
60 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 60 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 36 | Oct 2023 – Sep 2026 | 81.7% 21 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 36 | Oct 2023 – Sep 2026 | 7.92 mg/l 21 Sep 2026 |
| Temperature of Water 0076 | River water | 36 | Oct 2023 – Sep 2026 | 16.7 °C 21 Sep 2026 |
| pH 0061 | River water | 36 | Oct 2023 – Sep 2026 | 7.9 21 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 35 | Oct 2023 – Sep 2026 | 0.031 mg/l 21 Sep 2026 |
| Nitrate as N 0117 | River water | 35 | Oct 2023 – Sep 2026 | 6.66 mg/l 21 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 35 | Oct 2023 – Sep 2026 | 0.073 mg/l 21 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 36 | Oct 2023 – Sep 2026 | 706 µS/cm 21 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Jan 2024 – Jan 2025 | below 0.002 µg/l 23 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Jan 2024 – Jan 2025 | below 0.004 µg/l 23 Jan 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Jan 2024 – Jan 2025 | below 0.005 µg/l 23 Jan 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 35 | Oct 2023 – Sep 2026 | 210 mg/l 21 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 35 | Oct 2023 – Sep 2026 | 0.00074 mg/l 21 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 20 | Feb 2024 – Dec 2025 | 1.5 mg/l 10 Dec 2025 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Jan 2024 – Jan 2025 | below 0.002 µg/l 23 Jan 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Jan 2024 – Jan 2025 | below 0.002 µg/l 23 Jan 2025 |
| Nitrite as N 0118 | River water | 35 | Oct 2023 – Sep 2026 | 0.039 mg/l 21 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 35 | Oct 2023 – Sep 2026 | 6.7 mg/l 21 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Jan 2025 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Jan 2025 – Jan 2025 | 0.0028 µg/l 23 Jan 2025 |
| Perfluorobutanoic acid 2995 | River water | 2 | Jan 2024 – Jan 2025 | 0.0043 µg/l 23 Jan 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Jan 2024 – Jan 2025 | 0.0006 µg/l 23 Jan 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Jan 2024 – Jan 2025 | below 0.002 µg/l 23 Jan 2025 |
| Perfluorodecanoic acid 8892 | River water | 2 | Jan 2024 – Jan 2025 | below 0.002 µg/l 23 Jan 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Jan 2024 – Jan 2025 | below 0.005 µg/l 23 Jan 2025 |
| Perfluorododecanoic acid 8894 | River water | 2 | Jan 2024 – Jan 2025 | below 0.002 µg/l 23 Jan 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Jan 2024 – Jan 2025 | 0.0017 µg/l 23 Jan 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Jan 2024 – Jan 2025 | 0.00075 µg/l 23 Jan 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Jan 2024 – Jan 2025 | 0.0031 µg/l 23 Jan 2025 |
| Perfluorohexanoic acid 8888 | River water | 2 | Jan 2024 – Jan 2025 | 0.0041 µg/l 23 Jan 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Jan 2024 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluorononanoic acid 8891 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Jan 2024 – Jan 2025 | below 0.002 µg/l 23 Jan 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Jan 2024 – Jan 2025 | below 0.001 µg/l 23 Jan 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Jan 2025 – Jan 2025 | 0.0031 µg/l 23 Jan 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Jan 2025 – Jan 2025 | 0.0062 µg/l 23 Jan 2025 |
| Perfluorooctanoic acid 8890 | River water | 2 | Jan 2024 – Jan 2025 | 0.0043 µg/l 23 Jan 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Jan 2025 – Jan 2025 | below 0.0005 µg/l 23 Jan 2025 |
| Perfluoropentanoic acid 8887 | River water | 2 | Jan 2024 – Jan 2025 | 0.0053 µg/l 23 Jan 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Jan 2024 – Jan 2025 | below 0.006 µg/l 23 Jan 2025 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Jan 2024 – Jan 2025 | below 0.005 µg/l 23 Jan 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Jan 2024 – Jan 2025 | below 0.004 µg/l 23 Jan 2025 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Jan 2024 – Jan 2025 | below 0.002 µg/l 23 Jan 2025 |
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.