Lee above Luton Hoo Lakes
EA name: LEE ABOVE LUTON HOO LAKES
Environment Agency sampling point TH-PLER0051 · 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
- 3 Aug 2026, 12:0459 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 35 since 9 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 510400, 220200As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Lee
- River, by the map
- River LeaPlaced on the river its name gives, 11 m from the line.
- Next gauge downstream
- Luton East Hyde On the River Lee · 3.0 km along the river
- Nearest gauge upstream
- Luton, Stockingstone Road On the River Lee · 4.3 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (33 samples)
Planned investigation (local monitoring) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
10.4%
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 12:04 | 10.4 | 10.4% |
| 8 Jul 2026, 12:12 | 30.8 | 30.8% |
| 10 Jun 2026, 10:03 | 34.4 | 34.4% |
| 5 May 2026, 12:58 | 49.3 | 49.3% |
| 10 Apr 2026, 10:29 | 72.5 | 72.5% |
| 6 Mar 2026, 08:09 | 78.5 | 78.5% |
| 3 Feb 2026, 13:04 | 81.1 | 81.1% |
| 14 Jan 2026, 10:56 | 70.7 | 70.7% |
| 4 Dec 2025, 14:33 | 80.7 | 80.7% |
| 11 Nov 2025, 11:26 | 31.1 | 31.1% |
| 14 Oct 2025, 12:28 | 13.9 | 13.9% |
| 3 Sep 2025, 12:10 | 61.3 | 61.3% |
| 5 Aug 2025, 12:18 | 15.8 | 15.8% |
| 22 Jul 2025, 13:04 | 62.6 | 62.6% |
| 6 Jun 2025, 09:32 | 33.1 | 33.1% |
| 23 May 2025, 09:09 | 31.8 | 31.8% |
| 22 Apr 2025, 12:55 | 84.4 | 84.4% |
| 7 Mar 2025, 14:35 | 86.3 | 86.3% |
| 5 Feb 2025, 09:08 | 83 | 83% |
| 22 Jan 2025, 08:59 | 67.6 | 67.6% |
| 4 Dec 2024, 09:03 | 80.9 | 80.9% |
| 18 Nov 2024, 12:33 | 71.9 | 71.9% |
| 18 Oct 2024, 11:43 | 82.6 | 82.6% |
| 26 Sep 2024, 09:38 | 81.7 | 81.7% |
| 22 Aug 2024, 09:30 | 33.7 | 33.7% |
| 22 Jul 2024, 08:55 | 59.8 | 59.8% |
| 18 Jun 2024, 10:08 | 68.5 | 68.5% |
| 7 Mar 2024, 09:08 | 79.1 | 79.1% |
| 8 Feb 2024, 11:19 | 106.2 | 106.2% |
| 9 Jan 2024, 11:27 | 87.8 | 87.8% |
| 8 Dec 2023, 14:06 | 72.7 | 72.7% |
| 13 Nov 2023, 11:20 | 89.7 | 89.7% |
| 9 Oct 2023, 10:05 | 27.1 | 27.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
0.976 mg/l
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 12:04 | 0.976 | 0.976 mg/l |
| 8 Jul 2026, 12:12 | 2.88 | 2.88 mg/l |
| 10 Jun 2026, 10:03 | 3.64 | 3.64 mg/l |
| 5 May 2026, 12:58 | 5.12 | 5.12 mg/l |
| 10 Apr 2026, 10:29 | 8.05 | 8.05 mg/l |
| 6 Mar 2026, 08:09 | 8.76 | 8.76 mg/l |
| 3 Feb 2026, 13:04 | 9.45 | 9.45 mg/l |
| 14 Jan 2026, 10:56 | 8.7 | 8.7 mg/l |
| 4 Dec 2025, 14:33 | 9.47 | 9.47 mg/l |
| 11 Nov 2025, 11:26 | 3.38 | 3.38 mg/l |
| 14 Oct 2025, 12:28 | 1.51 | 1.51 mg/l |
| 3 Sep 2025, 12:10 | 5.88 | 5.88 mg/l |
| 5 Aug 2025, 12:18 | 1.56 | 1.56 mg/l |
| 22 Jul 2025, 13:04 | 5.78 | 5.78 mg/l |
| 6 Jun 2025, 09:32 | 3.44 | 3.44 mg/l |
| 23 May 2025, 09:09 | 3.51 | 3.51 mg/l |
| 22 Apr 2025, 12:55 | 9.03 | 9.03 mg/l |
| 7 Mar 2025, 14:35 | 9.39 | 9.39 mg/l |
| 5 Feb 2025, 09:08 | 9.94 | 9.94 mg/l |
| 22 Jan 2025, 08:59 | 8.13 | 8.13 mg/l |
| 4 Dec 2024, 09:03 | 9.45 | 9.45 mg/l |
| 18 Nov 2024, 12:33 | 8.14 | 8.14 mg/l |
| 18 Oct 2024, 11:43 | 8.7 | 8.7 mg/l |
| 26 Sep 2024, 09:38 | 8.4 | 8.4 mg/l |
| 22 Aug 2024, 09:30 | 3.42 | 3.42 mg/l |
| 22 Jul 2024, 08:55 | 5.98 | 5.98 mg/l |
| 18 Jun 2024, 10:08 | 6.93 | 6.93 mg/l |
| 7 Mar 2024, 09:08 | 8.89 | 8.89 mg/l |
| 8 Feb 2024, 11:19 | 12.9 | 12.9 mg/l |
| 9 Jan 2024, 11:27 | 10.6 | 10.6 mg/l |
| 8 Dec 2023, 14:06 | 8.45 | 8.45 mg/l |
| 13 Nov 2023, 11:20 | 10 | 10 mg/l |
| 9 Oct 2023, 10:05 | 2.8 | 2.8 mg/l |
Water temperature
code 0076 · °C
18.3 °C
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 12:04 | 18.3 | 18.3 °C |
| 8 Jul 2026, 12:12 | 18.5 | 18.5 °C |
| 10 Jun 2026, 10:03 | 12.7 | 12.7 °C |
| 5 May 2026, 12:58 | 13.5 | 13.5 °C |
| 10 Apr 2026, 10:29 | 10.6 | 10.6 °C |
| 6 Mar 2026, 08:09 | 10.4 | 10.4 °C |
| 3 Feb 2026, 13:04 | 8.6 | 8.6 °C |
| 14 Jan 2026, 10:56 | 6.4 | 6.4 °C |
| 4 Dec 2025, 14:33 | 8.3 | 8.3 °C |
| 11 Nov 2025, 11:26 | 11.5 | 11.5 °C |
| 14 Oct 2025, 12:28 | 11.5 | 11.5 °C |
| 3 Sep 2025, 12:10 | 17.2 | 17.2 °C |
| 5 Aug 2025, 12:18 | 16 | 16 °C |
| 22 Jul 2025, 13:04 | 19.1 | 19.1 °C |
| 6 Jun 2025, 09:32 | 13.5 | 13.5 °C |
| 23 May 2025, 09:09 | 10.9 | 10.9 °C |
| 22 Apr 2025, 12:55 | 12.2 | 12.2 °C |
| 7 Mar 2025, 14:35 | 11.5 | 11.5 °C |
| 5 Feb 2025, 09:08 | 7.5 | 7.5 °C |
| 22 Jan 2025, 08:59 | 7.3 | 7.3 °C |
| 4 Dec 2024, 09:03 | 8.5 | 8.5 °C |
| 18 Nov 2024, 12:33 | 9.8 | 9.8 °C |
| 18 Oct 2024, 11:43 | 12.9 | 12.9 °C |
| 26 Sep 2024, 09:38 | 14 | 14 °C |
| 22 Aug 2024, 09:30 | 14.6 | 14.6 °C |
| 22 Jul 2024, 08:55 | 15.3 | 15.3 °C |
| 18 Jun 2024, 10:08 | 14.7 | 14.7 °C |
| 7 Mar 2024, 09:08 | 10.1 | 10.1 °C |
| 8 Feb 2024, 11:19 | 6.8 | 6.8 °C |
| 9 Jan 2024, 11:27 | 7.1 | 7.1 °C |
| 8 Dec 2023, 14:06 | 8.7 | 8.7 °C |
| 13 Nov 2023, 11:20 | 10.4 | 10.4 °C |
| 9 Oct 2023, 10:05 | 13.8 | 13.8 °C |
pH
code 0061
7.6
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 12:04 | 7.6 | 7.6 |
| 8 Jul 2026, 12:12 | 7.24 | 7.24 |
| 10 Jun 2026, 10:03 | 7.27 | 7.27 |
| 5 May 2026, 12:58 | 7.31 | 7.31 |
| 10 Apr 2026, 10:29 | 7.75 | 7.75 |
| 6 Mar 2026, 08:09 | 7.63 | 7.63 |
| 3 Feb 2026, 13:04 | 7.9 | 7.9 |
| 14 Jan 2026, 10:56 | 7.68 | 7.68 |
| 4 Dec 2025, 14:33 | 7.84 | 7.84 |
| 11 Nov 2025, 11:26 | 7.51 | 7.51 |
| 14 Oct 2025, 12:28 | 7.47 | 7.47 |
| 3 Sep 2025, 12:10 | 7.32 | 7.32 |
| 5 Aug 2025, 12:18 | 7.17 | 7.17 |
| 22 Jul 2025, 13:04 | 8.31 | 8.31 |
| 6 Jun 2025, 09:32 | 7.42 | 7.42 |
| 23 May 2025, 09:09 | 7.5 | 7.5 |
| 22 Apr 2025, 12:55 | 7.6 | 7.6 |
| 7 Mar 2025, 14:35 | 7.74 | 7.74 |
| 5 Feb 2025, 09:08 | 7.78 | 7.78 |
| 22 Jan 2025, 08:59 | 7.54 | 7.54 |
| 4 Dec 2024, 09:03 | 7.59 | 7.59 |
| 18 Nov 2024, 12:33 | 7.65 | 7.65 |
| 18 Oct 2024, 11:43 | 7.57 | 7.57 |
| 26 Sep 2024, 09:38 | 7.62 | 7.62 |
| 22 Aug 2024, 09:30 | 7.32 | 7.32 |
| 22 Jul 2024, 08:55 | 7.38 | 7.38 |
| 18 Jun 2024, 10:08 | 7.53 | 7.53 |
| 7 Mar 2024, 09:08 | 7.51 | 7.51 |
| 8 Feb 2024, 11:19 | 7.91 | 7.91 |
| 9 Jan 2024, 11:27 | 7.8 | 7.8 |
| 8 Dec 2023, 14:06 | 7.63 | 7.63 |
| 13 Nov 2023, 11:20 | 7.82 | 7.82 |
| 9 Oct 2023, 10:05 | 7.09 | 7.09 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
8 mg/l
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 12:04 | 8 | 8 mg/l |
| 8 Jul 2026, 12:12 | 3.9 | 3.9 mg/l |
| 10 Jun 2026, 10:03 | 0.57 | 0.57 mg/l |
| 5 May 2026, 12:58 | 0.38 | 0.38 mg/l |
| 10 Apr 2026, 10:29 | 0.22 | 0.22 mg/l |
| 6 Mar 2026, 08:09 | 0.12 | 0.12 mg/l |
| 3 Feb 2026, 13:04 | 0.37 | 0.37 mg/l |
| 14 Jan 2026, 10:56 | 0.25 | 0.25 mg/l |
| 4 Dec 2025, 14:33 | 0.7 | 0.7 mg/l |
| 11 Nov 2025, 11:26 | 0.72 | 0.72 mg/l |
| 14 Oct 2025, 12:28 | 6.3 | 6.3 mg/l |
| 3 Sep 2025, 12:10 | 0.22 | 0.22 mg/l |
| 5 Aug 2025, 12:18 | 4.5 | 4.5 mg/l |
| 22 Jul 2025, 13:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jun 2025, 09:32 | 0.77 | 0.77 mg/l |
| 23 May 2025, 09:09 | 0.57 | 0.57 mg/l |
| 22 Apr 2025, 12:55 | 0.18 | 0.18 mg/l |
| 7 Mar 2025, 14:35 | 0.12 | 0.12 mg/l |
| 5 Feb 2025, 09:08 | 0.057 | 0.057 mg/l |
| 22 Jan 2025, 08:59 | 0.93 | 0.93 mg/l |
| 4 Dec 2024, 09:03 | 0.14 | 0.14 mg/l |
| 18 Nov 2024, 12:33 | 0.21 | 0.21 mg/l |
| 18 Oct 2024, 11:43 | 0.16 | 0.16 mg/l |
| 26 Sep 2024, 09:38 | 0.12 | 0.12 mg/l |
| 22 Aug 2024, 09:30 | 0.67 | 0.67 mg/l |
| 22 Jul 2024, 08:55 | 0.23 | 0.23 mg/l |
| 18 Jun 2024, 10:08 | 0.12 | 0.12 mg/l |
| 7 Mar 2024, 09:08 | 0.11 | 0.11 mg/l |
| 8 Feb 2024, 11:19 | 0.098 | 0.098 mg/l |
| 9 Jan 2024, 11:27 | 0.11 | 0.11 mg/l |
| 8 Dec 2023, 14:06 | 0.19 | 0.19 mg/l |
| 13 Nov 2023, 11:20 | 0.21 | 0.21 mg/l |
| 9 Oct 2023, 10:05 | 2.2 | 2.2 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.193 mg/l
Sampled 3 Aug 2026, 59 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 12:04 | 0.193 | 0.193 mg/l |
| 8 Jul 2026, 12:12 | 3.14 | 3.14 mg/l |
| 10 Jun 2026, 10:03 | 3.18 | 3.18 mg/l |
| 5 May 2026, 12:58 | 5.05 | 5.05 mg/l |
| 10 Apr 2026, 10:29 | 6.88 | 6.88 mg/l |
| 6 Mar 2026, 08:09 | 7.54 | 7.54 mg/l |
| 3 Feb 2026, 13:04 | 6.3 | 6.3 mg/l |
| 14 Jan 2026, 10:56 | 5.62 | 5.62 mg/l |
| 4 Dec 2025, 14:33 | 0.643 | 0.643 mg/l |
| 11 Nov 2025, 11:26 | 0.292 | 0.292 mg/l |
| 14 Oct 2025, 12:28 | <0.196 | below 0.196 mg/l (not detected above this) |
| 3 Sep 2025, 12:10 | 0.352 | 0.352 mg/l |
| 5 Aug 2025, 12:18 | 1.45 | 1.45 mg/l |
| 22 Jul 2025, 13:04 | 13.9 | 13.9 mg/l |
| 6 Jun 2025, 09:32 | 2.85 | 2.85 mg/l |
| 23 May 2025, 09:09 | 5.7 | 5.7 mg/l |
| 22 Apr 2025, 12:55 | 7.29 | 7.29 mg/l |
| 7 Mar 2025, 14:35 | 8.05 | 8.05 mg/l |
| 5 Feb 2025, 09:08 | 7.46 | 7.46 mg/l |
| 22 Jan 2025, 08:59 | 6.87 | 6.87 mg/l |
| 18 Nov 2024, 12:33 | 6.62 | 6.62 mg/l |
| 18 Oct 2024, 11:43 | 6.84 | 6.84 mg/l |
| 26 Sep 2024, 09:38 | 3.07 | 3.07 mg/l |
| 22 Aug 2024, 09:30 | 5.36 | 5.36 mg/l |
| 22 Jul 2024, 08:55 | 7.2 | 7.2 mg/l |
| 18 Jun 2024, 10:08 | 6.62 | 6.62 mg/l |
| 7 Mar 2024, 09:08 | 7.96 | 7.96 mg/l |
| 8 Feb 2024, 11:19 | 2.48 | 2.48 mg/l |
| 9 Jan 2024, 11:27 | 7.67 | 7.67 mg/l |
| 8 Dec 2023, 14:06 | 5.03 | 5.03 mg/l |
| 13 Nov 2023, 11:20 | 4.36 | 4.36 mg/l |
| 9 Oct 2023, 10:05 | 3.88 | 3.88 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.46 mg/l
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 12:04 | 0.46 | 0.46 mg/l |
| 8 Jul 2026, 12:12 | 0.29 | 0.29 mg/l |
| 10 Jun 2026, 10:03 | 0.082 | 0.082 mg/l |
| 5 May 2026, 12:58 | 0.053 | 0.053 mg/l |
| 10 Apr 2026, 10:29 | 0.051 | 0.051 mg/l |
| 6 Mar 2026, 08:09 | 0.026 | 0.026 mg/l |
| 3 Feb 2026, 13:04 | 0.056 | 0.056 mg/l |
| 14 Jan 2026, 10:56 | 0.048 | 0.048 mg/l |
| 4 Dec 2025, 14:33 | 0.075 | 0.075 mg/l |
| 11 Nov 2025, 11:26 | 0.074 | 0.074 mg/l |
| 14 Oct 2025, 12:28 | 0.27 | 0.27 mg/l |
| 3 Sep 2025, 12:10 | 0.067 | 0.067 mg/l |
| 5 Aug 2025, 12:18 | 0.34 | 0.34 mg/l |
| 22 Jul 2025, 13:04 | 0.46 | 0.46 mg/l |
| 6 Jun 2025, 09:32 | 0.097 | 0.097 mg/l |
| 23 May 2025, 09:09 | 0.086 | 0.086 mg/l |
| 22 Apr 2025, 12:55 | 0.031 | 0.031 mg/l |
| 7 Mar 2025, 14:35 | 0.046 | 0.046 mg/l |
| 5 Feb 2025, 09:08 | 0.031 | 0.031 mg/l |
| 22 Jan 2025, 08:59 | 0.048 | 0.048 mg/l |
| 4 Dec 2024, 09:03 | 0.048 | 0.048 mg/l |
| 18 Nov 2024, 12:33 | 0.046 | 0.046 mg/l |
| 18 Oct 2024, 11:43 | 0.056 | 0.056 mg/l |
| 26 Sep 2024, 09:38 | 0.044 | 0.044 mg/l |
| 22 Aug 2024, 09:30 | 0.11 | 0.11 mg/l |
| 22 Jul 2024, 08:55 | 0.057 | 0.057 mg/l |
| 18 Jun 2024, 10:08 | 0.037 | 0.037 mg/l |
| 7 Mar 2024, 09:08 | 0.033 | 0.033 mg/l |
| 8 Feb 2024, 11:19 | 0.031 | 0.031 mg/l |
| 9 Jan 2024, 11:27 | 0.034 | 0.034 mg/l |
| 8 Dec 2023, 14:06 | 0.024 | 0.024 mg/l |
| 13 Nov 2023, 11:20 | 0.022 | 0.022 mg/l |
| 9 Oct 2023, 10:05 | 0.14 | 0.14 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1130 µS/cm
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 12:04 | 1130 | 1130 µS/cm |
| 8 Jul 2026, 12:12 | 950 | 950 µS/cm |
| 10 Jun 2026, 10:03 | 681 | 681 µS/cm |
| 5 May 2026, 12:58 | 826 | 826 µS/cm |
| 10 Apr 2026, 10:29 | 851 | 851 µS/cm |
| 6 Mar 2026, 08:09 | 863 | 863 µS/cm |
| 3 Feb 2026, 13:04 | 877 | 877 µS/cm |
| 14 Jan 2026, 10:56 | 988 | 988 µS/cm |
| 4 Dec 2025, 14:33 | 882 | 882 µS/cm |
| 11 Nov 2025, 11:26 | 889 | 889 µS/cm |
| 14 Oct 2025, 12:28 | 535 | 535 µS/cm |
| 3 Sep 2025, 12:10 | 120 | 120 µS/cm |
| 5 Aug 2025, 12:18 | 744 | 744 µS/cm |
| 22 Jul 2025, 13:04 | 953 | 953 µS/cm |
| 6 Jun 2025, 09:32 | 798 | 798 µS/cm |
| 23 May 2025, 09:09 | 884 | 884 µS/cm |
| 22 Apr 2025, 12:55 | 865 | 865 µS/cm |
| 7 Mar 2025, 14:35 | 879 | 879 µS/cm |
| 5 Feb 2025, 09:08 | 862 | 862 µS/cm |
| 22 Jan 2025, 08:59 | 2108 | 2108 µS/cm |
| 4 Dec 2024, 09:03 | 859 | 859 µS/cm |
| 18 Nov 2024, 12:33 | 736 | 736 µS/cm |
| 18 Oct 2024, 11:43 | 805 | 805 µS/cm |
| 26 Sep 2024, 09:38 | 453 | 453 µS/cm |
| 22 Aug 2024, 09:30 | 862 | 862 µS/cm |
| 22 Jul 2024, 08:55 | 873 | 873 µS/cm |
| 18 Jun 2024, 10:08 | 839 | 839 µS/cm |
| 7 Mar 2024, 09:08 | 891 | 891 µS/cm |
| 8 Feb 2024, 11:19 | 379 | 379 µS/cm |
| 9 Jan 2024, 11:27 | 862 | 862 µS/cm |
| 8 Dec 2023, 14:06 | 860 | 860 µS/cm |
| 13 Nov 2023, 11:20 | 681 | 681 µS/cm |
| 9 Oct 2023, 10:05 | 943 | 943 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 – Aug 2026 | 10.4% 3 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Aug 2026 | 0.976 mg/l 3 Aug 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Aug 2026 | 18.3 °C 3 Aug 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Aug 2026 | 7.6 3 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 33 | Oct 2023 – Aug 2026 | 8 mg/l 3 Aug 2026 |
| Nitrate as N 0117 | River water | 32 | Oct 2023 – Aug 2026 | 0.193 mg/l 3 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 33 | Oct 2023 – Aug 2026 | 0.46 mg/l 3 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Aug 2026 | 1130 µS/cm 3 Aug 2026 |
| 1,1,1,2-Tetrachloroethane 6534 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| 1,1,1-Trichloroethane 3268 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| 1,1,2,2-Tetrachloroethane 7531 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| 1,1,2-Trichloroethane 9811 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| 1,1-Dichloroethane 3269 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| 1,1-Dichloroethylene :- {1,1-Dichloroethene} 9836 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| 1,2-Dichloroethane 3272 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| 1,2-Dimethylbenzene :- {o-Xylene} 9845 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 18 Nov 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 33 | Oct 2023 – Aug 2026 | 340 mg/l 3 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 33 | Oct 2023 – Aug 2026 | 0.108 mg/l 3 Aug 2026 |
| Benzene 3781 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Jun 2024 – May 2026 | below 3 mg/l 5 May 2026 |
| Bromodichloromethane 3282 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Bromoform :- {Tribromomethane} 3283 | River water | 23 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Carbon tetrachloride :- {Tetrachloromethane} 1049 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Chlorobenzene 3290 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Chlorodibromomethane 3292 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Chloroform :- {Trichloromethane} 3373 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene} 6538 | River water | 23 | Apr 2024 – Aug 2026 | 0.66 µg/l 3 Aug 2026 |
| Dimethylbenzene : Sum of isomers (1,3- 1,4-) 6716 | River water | 24 | Apr 2024 – Aug 2026 | below 0.2 µg/l 3 Aug 2026 |
| Ethyl tert-butyl ether :- {ETBE} 9844 | River water | 23 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Ethylbenzene 4117 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| MTBE :- {Methyl tert-butyl ether} 6656 | River water | 23 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Nitrite as N 0118 | River water | 33 | Oct 2023 – Aug 2026 | 0.0074 mg/l 3 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 32 | Oct 2023 – Aug 2026 | below 0.2 mg/l 3 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Nov 2024 – Nov 2024 | 0.001 µg/l 18 Nov 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Nov 2024 – Nov 2024 | 0.0031 µg/l 18 Nov 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Nov 2024 – Nov 2024 | 0.00088 µg/l 18 Nov 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Nov 2024 – Nov 2024 | 0.0011 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Nov 2024 – Nov 2024 | 0.0048 µg/l 18 Nov 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Nov 2024 – Nov 2024 | 0.0039 µg/l 18 Nov 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Nov 2024 – Nov 2024 | 0.0056 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Nov 2024 – Nov 2024 | 0.01 µg/l 18 Nov 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Nov 2024 – Nov 2024 | 0.00087 µg/l 18 Nov 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Nov 2024 – Nov 2024 | below 0.006 µg/l 18 Nov 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 18 Nov 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Styrene :- {Vinylbenzene} 9888 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| tert-Amyl methyl ether :- {TAME} 9839 | River water | 23 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Tetrachloroethylene :- {Perchloroethylene} 3328 | River water | 24 | Apr 2024 – Aug 2026 | 0.63 µg/l 3 Aug 2026 |
| Toluene :- {Methylbenzene} 3784 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene} 6539 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 3 Aug 2026 |
| Trichloroethylene :- {Trichloroethene} 3334 | River water | 24 | Apr 2024 – Aug 2026 | 0.43 µg/l 3 Aug 2026 |
| Trihalomethanes : Total :- {THM} 1200 | River water | 23 | Apr 2024 – Aug 2026 | below 0.4 µg/l 3 Aug 2026 |
| Vinyl chloride :- {Chloroethylene} 6715 | River water | 22 | Apr 2024 – Jun 2026 | below 0.1 µg/l 10 Jun 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.