Colne Brook above Thames
EA name: COLNE BROOK ABOVE THAMES
Environment Agency sampling point TH-PCNR0039 · 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
- 10 Aug 2026, 09:5752 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 35 since 19 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 501930, 172165As published, to the nearest 1 m. Open in a map
- River, by its own name
- Colne Brook
- River, by the map
- Colne BrookPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Staines On the River Thames · 2.0 km along the river
- Nearest gauge upstream
- Hythe End On the Colne Brook · 0.1 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (33 samples)
Monitoring (national agency policy) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
87.6%
Sampled 10 Aug 2026, 52 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 09:57 | 87.6 | 87.6% |
| 20 Jul 2026, 12:12 | 83.6 | 83.6% |
| 17 Jun 2026, 10:56 | 96.6 | 96.6% |
| 7 May 2026, 11:44 | 97.5 | 97.5% |
| 1 Apr 2026, 10:42 | 99.4 | 99.4% |
| 2 Mar 2026, 13:26 | 103 | 103% |
| 2 Feb 2026, 11:11 | 100.3 | 100.3% |
| 5 Jan 2026, 11:15 | 97.8 | 97.8% |
| 1 Dec 2025, 11:40 | 96.5 | 96.5% |
| 7 Nov 2025, 10:15 | 92.2 | 92.2% |
| 14 Oct 2025, 14:10 | 93 | 93% |
| 22 Sep 2025, 11:55 | 98.5 | 98.5% |
| 5 Aug 2025, 09:55 | 91.2 | 91.2% |
| 3 Jul 2025, 08:58 | 90.1 | 90.1% |
| 19 Jun 2025, 08:47 | 91.5 | 91.5% |
| 7 May 2025, 10:48 | 95.2 | 95.2% |
| 3 Apr 2025, 11:14 | 103.7 | 103.7% |
| 11 Mar 2025, 11:17 | 103.4 | 103.4% |
| 20 Feb 2025, 09:51 | 99.5 | 99.5% |
| 28 Jan 2025, 12:20 | 91 | 91% |
| 9 Dec 2024, 13:19 | 91.1 | 91.1% |
| 27 Nov 2024, 12:27 | 92.2 | 92.2% |
| 23 Oct 2024, 09:09 | 91.1 | 91.1% |
| 19 Sep 2024, 10:43 | 93.5 | 93.5% |
| 19 Aug 2024, 13:42 | 94.7 | 94.7% |
| 15 Jul 2024, 12:11 | 95.2 | 95.2% |
| 17 Jun 2024, 11:21 | 96.1 | 96.1% |
| 22 May 2024, 12:36 | 93.3 | 93.3% |
| 17 Apr 2024, 11:36 | 100 | 100% |
| 19 Mar 2024, 11:34 | 93.8 | 93.8% |
| 20 Feb 2024, 09:22 | 88.3 | 88.3% |
| 18 Jan 2024, 11:22 | 97.1 | 97.1% |
| 7 Dec 2023, 09:26 | 93.4 | 93.4% |
| 20 Nov 2023, 13:27 | 90.1 | 90.1% |
| 19 Oct 2023, 11:44 | 91.1 | 91.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.12 mg/l
Sampled 10 Aug 2026, 52 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 09:57 | 8.12 | 8.12 mg/l |
| 20 Jul 2026, 12:12 | 7.94 | 7.94 mg/l |
| 17 Jun 2026, 10:56 | 8.96 | 8.96 mg/l |
| 7 May 2026, 11:44 | 10.1 | 10.1 mg/l |
| 1 Apr 2026, 10:42 | 10.9 | 10.9 mg/l |
| 2 Mar 2026, 13:26 | 11.4 | 11.4 mg/l |
| 2 Feb 2026, 11:11 | 11.5 | 11.5 mg/l |
| 5 Jan 2026, 11:15 | 13.4 | 13.4 mg/l |
| 1 Dec 2025, 11:40 | 11.3 | 11.3 mg/l |
| 7 Nov 2025, 10:15 | 9.61 | 9.61 mg/l |
| 14 Oct 2025, 14:10 | 9.69 | 9.69 mg/l |
| 22 Sep 2025, 11:55 | 10.1 | 10.1 mg/l |
| 5 Aug 2025, 09:55 | 8.74 | 8.74 mg/l |
| 3 Jul 2025, 08:58 | 8.39 | 8.39 mg/l |
| 19 Jun 2025, 08:47 | 8.33 | 8.33 mg/l |
| 7 May 2025, 10:48 | 10.2 | 10.2 mg/l |
| 3 Apr 2025, 11:14 | 11 | 11 mg/l |
| 11 Mar 2025, 11:17 | 11.7 | 11.7 mg/l |
| 20 Feb 2025, 09:51 | 11.9 | 11.9 mg/l |
| 28 Jan 2025, 12:20 | 10.9 | 10.9 mg/l |
| 9 Dec 2024, 13:19 | 10.7 | 10.7 mg/l |
| 27 Nov 2024, 12:27 | 10.8 | 10.8 mg/l |
| 23 Oct 2024, 09:09 | 9.64 | 9.64 mg/l |
| 19 Sep 2024, 10:43 | 9.11 | 9.11 mg/l |
| 19 Aug 2024, 13:42 | 8.98 | 8.98 mg/l |
| 15 Jul 2024, 12:11 | 9.16 | 9.16 mg/l |
| 17 Jun 2024, 11:21 | 9.5 | 9.5 mg/l |
| 22 May 2024, 12:36 | 9.32 | 9.32 mg/l |
| 17 Apr 2024, 11:36 | 10.9 | 10.9 mg/l |
| 19 Mar 2024, 11:34 | 10.2 | 10.2 mg/l |
| 20 Feb 2024, 09:22 | 10.1 | 10.1 mg/l |
| 18 Jan 2024, 11:22 | 12.9 | 12.9 mg/l |
| 7 Dec 2023, 09:26 | 11.3 | 11.3 mg/l |
| 20 Nov 2023, 13:27 | 9.96 | 9.96 mg/l |
| 19 Oct 2023, 11:44 | 9.45 | 9.45 mg/l |
Water temperature
code 0076 · °C
18.9 °C
Sampled 10 Aug 2026, 52 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 09:57 | 18.9 | 18.9 °C |
| 20 Jul 2026, 12:12 | 17.7 | 17.7 °C |
| 17 Jun 2026, 10:56 | 18.9 | 18.9 °C |
| 7 May 2026, 11:44 | 13.8 | 13.8 °C |
| 1 Apr 2026, 10:42 | 11 | 11 °C |
| 2 Mar 2026, 13:26 | 10.7 | 10.7 °C |
| 2 Feb 2026, 11:11 | 9.1 | 9.1 °C |
| 5 Jan 2026, 11:15 | 2.3 | 2.3 °C |
| 1 Dec 2025, 11:40 | 8.4 | 8.4 °C |
| 7 Nov 2025, 10:15 | 13.4 | 13.4 °C |
| 14 Oct 2025, 14:10 | 13.4 | 13.4 °C |
| 22 Sep 2025, 11:55 | 13.9 | 13.9 °C |
| 5 Aug 2025, 09:55 | 17.3 | 17.3 °C |
| 3 Jul 2025, 08:58 | 18.7 | 18.7 °C |
| 19 Jun 2025, 08:47 | 19.8 | 19.8 °C |
| 7 May 2025, 10:48 | 12.1 | 12.1 °C |
| 3 Apr 2025, 11:14 | 12.5 | 12.5 °C |
| 11 Mar 2025, 11:17 | 9.8 | 9.8 °C |
| 20 Feb 2025, 09:51 | 7.5 | 7.5 °C |
| 28 Jan 2025, 12:20 | 7.4 | 7.4 °C |
| 9 Dec 2024, 13:19 | 8.1 | 8.1 °C |
| 27 Nov 2024, 12:27 | 8.4 | 8.4 °C |
| 23 Oct 2024, 09:09 | 12.7 | 12.7 °C |
| 19 Sep 2024, 10:43 | 16.5 | 16.5 °C |
| 19 Aug 2024, 13:42 | 17.8 | 17.8 °C |
| 15 Jul 2024, 12:11 | 17.1 | 17.1 °C |
| 17 Jun 2024, 11:21 | 15.8 | 15.8 °C |
| 22 May 2024, 12:36 | 15.3 | 15.3 °C |
| 17 Apr 2024, 11:36 | 11.3 | 11.3 °C |
| 19 Mar 2024, 11:34 | 11.5 | 11.5 °C |
| 20 Feb 2024, 09:22 | 9.5 | 9.5 °C |
| 18 Jan 2024, 11:22 | 3.5 | 3.5 °C |
| 7 Dec 2023, 09:26 | 7.2 | 7.2 °C |
| 20 Nov 2023, 13:27 | 10.8 | 10.8 °C |
| 19 Oct 2023, 11:44 | 13.6 | 13.6 °C |
pH
code 0061
8.05
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 09:57 | 8.05 | 8.05 |
| 20 Jul 2026, 12:12 | 7.82 | 7.82 |
| 17 Jun 2026, 10:56 | 8.08 | 8.08 |
| 7 May 2026, 11:44 | 8.21 | 8.21 |
| 1 Apr 2026, 10:42 | 8.29 | 8.29 |
| 2 Mar 2026, 13:26 | 8.31 | 8.31 |
| 2 Feb 2026, 11:11 | 8.25 | 8.25 |
| 5 Jan 2026, 11:15 | 8.22 | 8.22 |
| 1 Dec 2025, 11:40 | 8.01 | 8.01 |
| 7 Nov 2025, 10:15 | 8.03 | 8.03 |
| 14 Oct 2025, 14:10 | 7.97 | 7.97 |
| 22 Sep 2025, 11:55 | 8 | 8 |
| 5 Aug 2025, 09:55 | 8.13 | 8.13 |
| 3 Jul 2025, 08:58 | 8.2 | 8.2 |
| 19 Jun 2025, 08:47 | 8.17 | 8.17 |
| 7 May 2025, 10:48 | 8.26 | 8.26 |
| 11 Mar 2025, 11:17 | 8.26 | 8.26 |
| 20 Feb 2025, 09:51 | 8.19 | 8.19 |
| 28 Jan 2025, 12:20 | 7.97 | 7.97 |
| 9 Dec 2024, 13:19 | 7.96 | 7.96 |
| 27 Nov 2024, 12:27 | 7.99 | 7.99 |
| 23 Oct 2024, 09:09 | 7.95 | 7.95 |
| 19 Sep 2024, 10:43 | 8.04 | 8.04 |
| 19 Aug 2024, 13:42 | 8.14 | 8.14 |
| 15 Jul 2024, 12:11 | 8.06 | 8.06 |
| 17 Jun 2024, 11:21 | 8.11 | 8.11 |
| 22 May 2024, 12:36 | 8.14 | 8.14 |
| 17 Apr 2024, 11:36 | 8.21 | 8.21 |
| 19 Mar 2024, 11:34 | 8.03 | 8.03 |
| 20 Feb 2024, 09:22 | 8 | 8 |
| 18 Jan 2024, 11:22 | 8.3 | 8.3 |
| 7 Dec 2023, 09:26 | 7.98 | 7.98 |
| 20 Nov 2023, 13:27 | 7.96 | 7.96 |
| 19 Oct 2023, 11:44 | 7.94 | 7.94 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 09:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jul 2026, 12:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2026, 10:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 May 2026, 11:44 | 0.036 | 0.036 mg/l |
| 1 Apr 2026, 10:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Mar 2026, 13:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Feb 2026, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jan 2026, 11:15 | 0.059 | 0.059 mg/l |
| 1 Dec 2025, 11:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Nov 2025, 10:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Oct 2025, 14:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Sep 2025, 11:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2025, 09:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2025, 08:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jun 2025, 08:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 May 2025, 10:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Mar 2025, 11:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Feb 2025, 09:51 | 0.069 | 0.069 mg/l |
| 28 Jan 2025, 12:20 | 0.42 | 0.42 mg/l |
| 9 Dec 2024, 13:19 | 0.76 | 0.76 mg/l |
| 27 Nov 2024, 12:27 | 0.039 | 0.039 mg/l |
| 23 Oct 2024, 09:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Sep 2024, 10:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Aug 2024, 13:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2024, 12:11 | 0.031 | 0.031 mg/l |
| 17 Jun 2024, 11:21 | 0.03 | 0.03 mg/l |
| 22 May 2024, 12:36 | 0.039 | 0.039 mg/l |
| 17 Apr 2024, 11:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Mar 2024, 11:34 | 0.052 | 0.052 mg/l |
| 20 Feb 2024, 09:22 | 0.17 | 0.17 mg/l |
| 18 Jan 2024, 11:22 | 0.074 | 0.074 mg/l |
| 7 Dec 2023, 09:26 | 0.04 | 0.04 mg/l |
| 20 Nov 2023, 13:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Oct 2023, 11:44 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
14 mg/l
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 09:57 | 14 | 14 mg/l |
| 20 Jul 2026, 12:12 | 0.346 | 0.346 mg/l |
| 17 Jun 2026, 10:56 | 8.99 | 8.99 mg/l |
| 7 May 2026, 11:44 | 7.88 | 7.88 mg/l |
| 1 Apr 2026, 10:42 | 6.79 | 6.79 mg/l |
| 2 Mar 2026, 13:26 | 6.47 | 6.47 mg/l |
| 2 Feb 2026, 11:11 | 6.27 | 6.27 mg/l |
| 5 Jan 2026, 11:15 | 11 | 11 mg/l |
| 1 Dec 2025, 11:40 | 9.48 | 9.48 mg/l |
| 7 Nov 2025, 10:15 | 9.59 | 9.59 mg/l |
| 14 Oct 2025, 14:10 | 13 | 13 mg/l |
| 22 Sep 2025, 11:55 | 12 | 12 mg/l |
| 5 Aug 2025, 09:55 | 11 | 11 mg/l |
| 3 Jul 2025, 08:58 | 9.38 | 9.38 mg/l |
| 19 Jun 2025, 08:47 | 7.39 | 7.39 mg/l |
| 7 May 2025, 10:48 | 8.94 | 8.94 mg/l |
| 11 Mar 2025, 11:17 | 6.38 | 6.38 mg/l |
| 20 Feb 2025, 09:51 | 7.45 | 7.45 mg/l |
| 28 Jan 2025, 12:20 | 1.47 | 1.47 mg/l |
| 9 Dec 2024, 13:19 | 5.69 | 5.69 mg/l |
| 27 Nov 2024, 12:27 | 5.97 | 5.97 mg/l |
| 23 Oct 2024, 09:09 | 6.09 | 6.09 mg/l |
| 19 Sep 2024, 10:43 | 8.59 | 8.59 mg/l |
| 19 Aug 2024, 13:42 | 8.09 | 8.09 mg/l |
| 15 Jul 2024, 12:11 | 5.49 | 5.49 mg/l |
| 17 Jun 2024, 11:21 | 5.69 | 5.69 mg/l |
| 22 May 2024, 12:36 | 5.67 | 5.67 mg/l |
| 17 Apr 2024, 11:36 | 5.38 | 5.38 mg/l |
| 19 Mar 2024, 11:34 | 4.54 | 4.54 mg/l |
| 20 Feb 2024, 09:22 | 4.29 | 4.29 mg/l |
| 18 Jan 2024, 11:22 | 6.65 | 6.65 mg/l |
| 7 Dec 2023, 09:26 | 8.48 | 8.48 mg/l |
| 20 Nov 2023, 13:27 | 6.69 | 6.69 mg/l |
| 19 Oct 2023, 11:44 | 9.98 | 9.98 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.38 mg/l
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 09:57 | 0.38 | 0.38 mg/l |
| 20 Jul 2026, 12:12 | 0.17 | 0.17 mg/l |
| 17 Jun 2026, 10:56 | 0.31 | 0.31 mg/l |
| 7 May 2026, 11:44 | 0.28 | 0.28 mg/l |
| 1 Apr 2026, 10:42 | 0.13 | 0.13 mg/l |
| 2 Mar 2026, 13:26 | 0.19 | 0.19 mg/l |
| 2 Feb 2026, 11:11 | 0.2 | 0.2 mg/l |
| 5 Jan 2026, 11:15 | 0.26 | 0.26 mg/l |
| 1 Dec 2025, 11:40 | 0.3 | 0.3 mg/l |
| 7 Nov 2025, 10:15 | 0.35 | 0.35 mg/l |
| 14 Oct 2025, 14:10 | 0.44 | 0.44 mg/l |
| 22 Sep 2025, 11:55 | 0.33 | 0.33 mg/l |
| 5 Aug 2025, 09:55 | 0.34 | 0.34 mg/l |
| 3 Jul 2025, 08:58 | 0.36 | 0.36 mg/l |
| 19 Jun 2025, 08:47 | 0.33 | 0.33 mg/l |
| 7 May 2025, 10:48 | 0.22 | 0.22 mg/l |
| 11 Mar 2025, 11:17 | 0.2 | 0.2 mg/l |
| 20 Feb 2025, 09:51 | 0.16 | 0.16 mg/l |
| 28 Jan 2025, 12:20 | 0.14 | 0.14 mg/l |
| 9 Dec 2024, 13:19 | 0.27 | 0.27 mg/l |
| 27 Nov 2024, 12:27 | 0.25 | 0.25 mg/l |
| 23 Oct 2024, 09:09 | 0.29 | 0.29 mg/l |
| 19 Sep 2024, 10:43 | 0.32 | 0.32 mg/l |
| 19 Aug 2024, 13:42 | 0.31 | 0.31 mg/l |
| 15 Jul 2024, 12:11 | 0.25 | 0.25 mg/l |
| 17 Jun 2024, 11:21 | 0.23 | 0.23 mg/l |
| 22 May 2024, 12:36 | 0.23 | 0.23 mg/l |
| 17 Apr 2024, 11:36 | 0.19 | 0.19 mg/l |
| 19 Mar 2024, 11:34 | 0.19 | 0.19 mg/l |
| 20 Feb 2024, 09:22 | 0.2 | 0.2 mg/l |
| 18 Jan 2024, 11:22 | 0.2 | 0.2 mg/l |
| 7 Dec 2023, 09:26 | 0.27 | 0.27 mg/l |
| 20 Nov 2023, 13:27 | 0.24 | 0.24 mg/l |
| 19 Oct 2023, 11:44 | 0.34 | 0.34 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
869 µS/cm
Sampled 10 Aug 2026, 52 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 09:57 | 869 | 869 µS/cm |
| 20 Jul 2026, 12:12 | 665 | 665 µS/cm |
| 17 Jun 2026, 10:56 | 771 | 771 µS/cm |
| 7 May 2026, 11:44 | 784 | 784 µS/cm |
| 1 Apr 2026, 10:42 | 754 | 754 µS/cm |
| 2 Mar 2026, 13:26 | 744 | 744 µS/cm |
| 2 Feb 2026, 11:11 | 749 | 749 µS/cm |
| 5 Jan 2026, 11:15 | 843 | 843 µS/cm |
| 1 Dec 2025, 11:40 | 848 | 848 µS/cm |
| 7 Nov 2025, 10:15 | 817 | 817 µS/cm |
| 14 Oct 2025, 14:10 | 843 | 843 µS/cm |
| 22 Sep 2025, 11:55 | 820 | 820 µS/cm |
| 5 Aug 2025, 09:55 | 781 | 781 µS/cm |
| 3 Jul 2025, 08:58 | 793 | 793 µS/cm |
| 19 Jun 2025, 08:47 | 783 | 783 µS/cm |
| 7 May 2025, 10:48 | 777 | 777 µS/cm |
| 3 Apr 2025, 11:14 | 760 | 760 µS/cm |
| 11 Mar 2025, 11:17 | 748 | 748 µS/cm |
| 20 Feb 2025, 09:51 | 756 | 756 µS/cm |
| 28 Jan 2025, 12:20 | 704 | 704 µS/cm |
| 9 Dec 2024, 13:19 | 665 | 665 µS/cm |
| 27 Nov 2024, 12:27 | 667 | 667 µS/cm |
| 23 Oct 2024, 09:09 | 715 | 715 µS/cm |
| 19 Sep 2024, 10:43 | 772 | 772 µS/cm |
| 19 Aug 2024, 13:42 | 751 | 751 µS/cm |
| 15 Jul 2024, 12:11 | 709 | 709 µS/cm |
| 17 Jun 2024, 11:21 | 710 | 710 µS/cm |
| 22 May 2024, 12:36 | 724 | 724 µS/cm |
| 17 Apr 2024, 11:36 | 713 | 713 µS/cm |
| 19 Mar 2024, 11:34 | 699 | 699 µS/cm |
| 20 Feb 2024, 09:22 | 651 | 651 µS/cm |
| 18 Jan 2024, 11:22 | 749 | 749 µS/cm |
| 7 Dec 2023, 09:26 | 780 | 780 µS/cm |
| 20 Nov 2023, 13:27 | 712 | 712 µS/cm |
| 19 Oct 2023, 11:44 | 785 | 785 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 | 35 | Oct 2023 – Aug 2026 | 87.6% 10 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 35 | Oct 2023 – Aug 2026 | 8.12 mg/l 10 Aug 2026 |
| Temperature of Water 0076 | River water | 35 | Oct 2023 – Aug 2026 | 18.9 °C 10 Aug 2026 |
| pH 0061 | River water | 34 | Oct 2023 – Aug 2026 | 8.05 10 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 34 | Oct 2023 – Aug 2026 | below 0.03 mg/l 10 Aug 2026 |
| Nitrate as N 0117 | River water | 34 | Oct 2023 – Aug 2026 | 14 mg/l 10 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 34 | Oct 2023 – Aug 2026 | 0.38 mg/l 10 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 35 | Oct 2023 – Aug 2026 | 869 µS/cm 10 Aug 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | Oct 2023 – Jan 2025 | below 0.004 µg/l 28 Jan 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 3 | Oct 2023 – Jan 2025 | below 0.005 µg/l 28 Jan 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 34 | Oct 2023 – Aug 2026 | 210 mg/l 10 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 34 | Oct 2023 – Aug 2026 | below 0.00104 mg/l 10 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 27 | Feb 2024 – May 2026 | 1.4 mg/l 7 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Nitrite as N 0118 | River water | 34 | Oct 2023 – Aug 2026 | 0.011 mg/l 10 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 34 | Oct 2023 – Aug 2026 | 14 mg/l 10 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | Oct 2023 – Jan 2025 | 0.0033 µg/l 28 Jan 2025 |
| Perfluorobutanoic acid 2995 | River water | 3 | Oct 2023 – Jan 2025 | 0.006 µg/l 28 Jan 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | Oct 2023 – Jan 2025 | 0.00083 µg/l 28 Jan 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Perfluorodecanoic acid 8892 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | Oct 2023 – Jan 2025 | below 0.005 µg/l 28 Jan 2025 |
| Perfluorododecanoic acid 8894 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoroheptanoic acid 8889 | River water | 3 | Oct 2023 – Jan 2025 | 0.0023 µg/l 28 Jan 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | Oct 2023 – Jan 2025 | 0.00063 µg/l 28 Jan 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | Oct 2023 – Jan 2025 | 0.0031 µg/l 28 Jan 2025 |
| Perfluorohexanoic acid 8888 | River water | 3 | Oct 2023 – Jan 2025 | 0.0045 µg/l 28 Jan 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluorononanoic acid 8891 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | Oct 2023 – Jan 2025 | 0.0033 µg/l 28 Jan 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | Oct 2023 – Jan 2025 | 0.0039 µg/l 28 Jan 2025 |
| Perfluorooctanoic acid 8890 | River water | 3 | Oct 2023 – Jan 2025 | 0.0052 µg/l 28 Jan 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoropentanoic acid 8887 | River water | 3 | Oct 2023 – Jan 2025 | 0.0056 µg/l 28 Jan 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | Oct 2023 – Jan 2025 | below 0.006 µg/l 28 Jan 2025 |
| Perfluorotridecanoic acid 2955 | River water | 3 | Oct 2023 – Jan 2025 | below 0.005 µg/l 28 Jan 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | Oct 2023 – Jan 2025 | below 0.004 µg/l 28 Jan 2025 |
| Perfluoroundecanoic acid 8893 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 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.