Lee at East Hyde Road Bridge
EA name: LEE AT EAST HYDE RD BRIDGE
Environment Agency sampling point TH-PLER0061 · 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
- 7 Aug 2026, 10:3755 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 35 since 10 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 512800, 217200As 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, 23 m from the line.
- Next gauge downstream
- Harpenden On the River Lee · 1.9 km along the river
- Nearest gauge upstream
- Luton East Hyde On the River Lee · 1.4 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 · %
92.1%
Sampled 7 Aug 2026, 55 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Aug 2026, 10:37 | 92.1 | 92.1% |
| 21 Jul 2026, 13:25 | 102.7 | 102.7% |
| 4 Jun 2026, 11:00 | 92.7 | 92.7% |
| 1 May 2026, 13:32 | 102.2 | 102.2% |
| 8 Apr 2026, 09:57 | 86.8 | 86.8% |
| 10 Mar 2026, 10:53 | 88.2 | 88.2% |
| 2 Feb 2026, 09:43 | 73.7 | 73.7% |
| 5 Jan 2026, 12:02 | 90.8 | 90.8% |
| 1 Dec 2025, 15:00 | 77 | 77% |
| 7 Nov 2025, 13:45 | 83 | 83% |
| 7 Oct 2025, 11:22 | 79.2 | 79.2% |
| 3 Sep 2025, 13:16 | 75.9 | 75.9% |
| 5 Aug 2025, 13:24 | 98.7 | 98.7% |
| 25 Jul 2025, 11:06 | 95.2 | 95.2% |
| 6 Jun 2025, 09:50 | 56.5 | 56.5% |
| 15 May 2025, 12:49 | 81.7 | 81.7% |
| 28 Apr 2025, 13:55 | 95.6 | 95.6% |
| 13 Mar 2025, 09:53 | 84.8 | 84.8% |
| 3 Feb 2025, 15:56 | 80.9 | 80.9% |
| 6 Jan 2025, 11:38 | 84.2 | 84.2% |
| 2 Dec 2024, 14:08 | 80.1 | 80.1% |
| 1 Nov 2024, 10:00 | 78.6 | 78.6% |
| 18 Oct 2024, 12:24 | 86.1 | 86.1% |
| 9 Sep 2024, 12:27 | 75.2 | 75.2% |
| 2 Aug 2024, 12:28 | 95.2 | 95.2% |
| 12 Jul 2024, 09:10 | 82.6 | 82.6% |
| 6 Jun 2024, 11:09 | 91.9 | 91.9% |
| 6 Mar 2024, 12:20 | 85.5 | 85.5% |
| 8 Feb 2024, 10:45 | 85.7 | 85.7% |
| 9 Jan 2024, 10:03 | 84.3 | 84.3% |
| 8 Dec 2023, 14:26 | 76.6 | 76.6% |
| 6 Nov 2023, 09:35 | 78 | 78% |
| 10 Oct 2023, 14:17 | 88 | 88% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.21 mg/l
Sampled 7 Aug 2026, 55 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Aug 2026, 10:37 | 8.21 | 8.21 mg/l |
| 21 Jul 2026, 13:25 | 8.99 | 8.99 mg/l |
| 4 Jun 2026, 11:00 | 8.65 | 8.65 mg/l |
| 1 May 2026, 13:32 | 9.79 | 9.79 mg/l |
| 8 Apr 2026, 09:57 | 8.88 | 8.88 mg/l |
| 10 Mar 2026, 10:53 | 9.27 | 9.27 mg/l |
| 2 Feb 2026, 09:43 | 8.13 | 8.13 mg/l |
| 5 Jan 2026, 12:02 | 11.1 | 11.1 mg/l |
| 1 Dec 2025, 15:00 | 7.95 | 7.95 mg/l |
| 7 Nov 2025, 13:45 | 7.92 | 7.92 mg/l |
| 7 Oct 2025, 11:22 | 7.54 | 7.54 mg/l |
| 3 Sep 2025, 13:16 | 7.01 | 7.01 mg/l |
| 5 Aug 2025, 13:24 | 8.9 | 8.9 mg/l |
| 25 Jul 2025, 11:06 | 8.52 | 8.52 mg/l |
| 6 Jun 2025, 09:50 | 5.45 | 5.45 mg/l |
| 15 May 2025, 12:49 | 8.03 | 8.03 mg/l |
| 28 Apr 2025, 13:55 | 9.1 | 9.1 mg/l |
| 13 Mar 2025, 09:53 | 9.33 | 9.33 mg/l |
| 3 Feb 2025, 15:56 | 9.01 | 9.01 mg/l |
| 6 Jan 2025, 11:38 | 9.91 | 9.91 mg/l |
| 2 Dec 2024, 14:08 | 8.55 | 8.55 mg/l |
| 1 Nov 2024, 10:00 | 8.04 | 8.04 mg/l |
| 18 Oct 2024, 12:24 | 8.59 | 8.59 mg/l |
| 9 Sep 2024, 12:27 | 7.07 | 7.07 mg/l |
| 2 Aug 2024, 12:28 | 8.45 | 8.45 mg/l |
| 12 Jul 2024, 09:10 | 7.93 | 7.93 mg/l |
| 6 Jun 2024, 11:09 | 8.9 | 8.9 mg/l |
| 6 Mar 2024, 12:20 | 9.45 | 9.45 mg/l |
| 8 Feb 2024, 10:45 | 9.61 | 9.61 mg/l |
| 9 Jan 2024, 10:03 | 9.78 | 9.78 mg/l |
| 8 Dec 2023, 14:26 | 8.53 | 8.53 mg/l |
| 6 Nov 2023, 09:35 | 8.2 | 8.2 mg/l |
| 10 Oct 2023, 14:17 | 8.03 | 8.03 mg/l |
Water temperature
code 0076 · °C
20.9 °C
Sampled 7 Aug 2026, 55 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Aug 2026, 10:37 | 20.9 | 20.9 °C |
| 21 Jul 2026, 13:25 | 21.8 | 21.8 °C |
| 4 Jun 2026, 11:00 | 18.6 | 18.6 °C |
| 1 May 2026, 13:32 | 17.3 | 17.3 °C |
| 8 Apr 2026, 09:57 | 14.2 | 14.2 °C |
| 10 Mar 2026, 10:53 | 13 | 13 °C |
| 2 Feb 2026, 09:43 | 10.9 | 10.9 °C |
| 5 Jan 2026, 12:02 | 6.6 | 6.6 °C |
| 1 Dec 2025, 15:00 | 13.8 | 13.8 °C |
| 7 Nov 2025, 13:45 | 17.5 | 17.5 °C |
| 7 Oct 2025, 11:22 | 17.6 | 17.6 °C |
| 3 Sep 2025, 13:16 | 19.1 | 19.1 °C |
| 5 Aug 2025, 13:24 | 20.3 | 20.3 °C |
| 25 Jul 2025, 11:06 | 20.7 | 20.7 °C |
| 6 Jun 2025, 09:50 | 17 | 17 °C |
| 15 May 2025, 12:49 | 16.1 | 16.1 °C |
| 28 Apr 2025, 13:55 | 17.6 | 17.6 °C |
| 13 Mar 2025, 09:53 | 11 | 11 °C |
| 3 Feb 2025, 15:56 | 10.5 | 10.5 °C |
| 6 Jan 2025, 11:38 | 8.2 | 8.2 °C |
| 2 Dec 2024, 14:08 | 12.3 | 12.3 °C |
| 1 Nov 2024, 10:00 | 14.2 | 14.2 °C |
| 18 Oct 2024, 12:24 | 15.4 | 15.4 °C |
| 9 Sep 2024, 12:27 | 18.2 | 18.2 °C |
| 2 Aug 2024, 12:28 | 21.1 | 21.1 °C |
| 12 Jul 2024, 09:10 | 17.2 | 17.2 °C |
| 6 Jun 2024, 11:09 | 16.8 | 16.8 °C |
| 6 Mar 2024, 12:20 | 10.8 | 10.8 °C |
| 8 Feb 2024, 10:45 | 10.2 | 10.2 °C |
| 9 Jan 2024, 10:03 | 8.8 | 8.8 °C |
| 8 Dec 2023, 14:26 | 10.5 | 10.5 °C |
| 6 Nov 2023, 09:35 | 13 | 13 °C |
| 10 Oct 2023, 14:17 | 19.7 | 19.7 °C |
pH
code 0061
7.75
Sampled 7 Aug 2026, 55 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Aug 2026, 10:37 | 7.75 | 7.75 |
| 21 Jul 2026, 13:25 | 7.7 | 7.7 |
| 4 Jun 2026, 11:00 | 7.65 | 7.65 |
| 1 May 2026, 13:32 | 7.68 | 7.68 |
| 8 Apr 2026, 09:57 | 7.69 | 7.69 |
| 10 Mar 2026, 10:53 | 7.77 | 7.77 |
| 2 Feb 2026, 09:43 | 7.71 | 7.71 |
| 5 Jan 2026, 12:02 | 7.58 | 7.58 |
| 1 Dec 2025, 15:00 | 7.61 | 7.61 |
| 7 Nov 2025, 13:45 | 7.65 | 7.65 |
| 7 Oct 2025, 11:22 | 7.59 | 7.59 |
| 3 Sep 2025, 13:16 | 7.42 | 7.42 |
| 5 Aug 2025, 13:24 | 7.7 | 7.7 |
| 25 Jul 2025, 11:06 | 7.75 | 7.75 |
| 6 Jun 2025, 09:50 | 7.46 | 7.46 |
| 15 May 2025, 12:49 | 7.68 | 7.68 |
| 28 Apr 2025, 13:55 | 7.65 | 7.65 |
| 13 Mar 2025, 09:53 | 7.77 | 7.77 |
| 3 Feb 2025, 15:56 | 7.66 | 7.66 |
| 6 Jan 2025, 11:38 | 7.79 | 7.79 |
| 2 Dec 2024, 14:08 | 7.62 | 7.62 |
| 1 Nov 2024, 10:00 | 7.56 | 7.56 |
| 18 Oct 2024, 12:24 | 7.59 | 7.59 |
| 9 Sep 2024, 12:27 | 7.82 | 7.82 |
| 2 Aug 2024, 12:28 | 7.76 | 7.76 |
| 12 Jul 2024, 09:10 | 7.69 | 7.69 |
| 6 Jun 2024, 11:09 | 7.8 | 7.8 |
| 10 May 2024, 13:04 | 7.67 | 7.67 |
| 8 Apr 2024, 12:45 | 7.78 | 7.78 |
| 6 Mar 2024, 12:20 | 7.56 | 7.56 |
| 8 Feb 2024, 10:45 | 7.74 | 7.74 |
| 9 Jan 2024, 10:03 | 7.72 | 7.72 |
| 8 Dec 2023, 14:26 | 7.66 | 7.66 |
| 6 Nov 2023, 09:35 | 7.53 | 7.53 |
| 10 Oct 2023, 14:17 | 7.63 | 7.63 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.034 mg/l
Sampled 7 Aug 2026, 55 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Aug 2026, 10:37 | 0.034 | 0.034 mg/l |
| 21 Jul 2026, 13:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jun 2026, 11:00 | 0.053 | 0.053 mg/l |
| 1 May 2026, 13:32 | 0.053 | 0.053 mg/l |
| 8 Apr 2026, 09:57 | 0.042 | 0.042 mg/l |
| 10 Mar 2026, 10:53 | 0.064 | 0.064 mg/l |
| 2 Feb 2026, 09:43 | 0.31 | 0.31 mg/l |
| 5 Jan 2026, 12:02 | 0.046 | 0.046 mg/l |
| 1 Dec 2025, 15:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Nov 2025, 13:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Oct 2025, 11:22 | 0.1 | 0.1 mg/l |
| 3 Sep 2025, 13:16 | 0.52 | 0.52 mg/l |
| 5 Aug 2025, 13:24 | 0.051 | 0.051 mg/l |
| 25 Jul 2025, 11:06 | 0.038 | 0.038 mg/l |
| 6 Jun 2025, 09:50 | 2.9 | 2.9 mg/l |
| 15 May 2025, 12:49 | 0.054 | 0.054 mg/l |
| 28 Apr 2025, 13:55 | 0.076 | 0.076 mg/l |
| 13 Mar 2025, 09:53 | 0.097 | 0.097 mg/l |
| 3 Feb 2025, 15:56 | 0.038 | 0.038 mg/l |
| 6 Jan 2025, 11:38 | 1.9 | 1.9 mg/l |
| 2 Dec 2024, 14:08 | 0.051 | 0.051 mg/l |
| 1 Nov 2024, 10:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Oct 2024, 12:24 | 0.042 | 0.042 mg/l |
| 9 Sep 2024, 12:27 | 0.14 | 0.14 mg/l |
| 2 Aug 2024, 12:28 | 0.052 | 0.052 mg/l |
| 12 Jul 2024, 09:10 | 0.046 | 0.046 mg/l |
| 6 Jun 2024, 11:09 | 0.043 | 0.043 mg/l |
| 6 Mar 2024, 12:20 | 0.064 | 0.064 mg/l |
| 8 Feb 2024, 10:45 | 0.042 | 0.042 mg/l |
| 9 Jan 2024, 10:03 | 0.057 | 0.057 mg/l |
| 8 Dec 2023, 14:26 | 0.032 | 0.032 mg/l |
| 6 Nov 2023, 09:35 | 0.21 | 0.21 mg/l |
| 10 Oct 2023, 14:17 | 0.039 | 0.039 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
15.9 mg/l
Sampled 7 Aug 2026, 55 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Aug 2026, 10:37 | 15.9 | 15.9 mg/l |
| 21 Jul 2026, 13:25 | 14 | 14 mg/l |
| 4 Jun 2026, 11:00 | 5.29 | 5.29 mg/l |
| 1 May 2026, 13:32 | 15 | 15 mg/l |
| 8 Apr 2026, 09:57 | 7.98 | 7.98 mg/l |
| 10 Mar 2026, 10:53 | 5.07 | 5.07 mg/l |
| 2 Feb 2026, 09:43 | 7.44 | 7.44 mg/l |
| 5 Jan 2026, 12:02 | 14 | 14 mg/l |
| 1 Dec 2025, 15:00 | 13 | 13 mg/l |
| 7 Nov 2025, 13:45 | 15 | 15 mg/l |
| 7 Oct 2025, 11:22 | 14 | 14 mg/l |
| 3 Sep 2025, 13:16 | 7.76 | 7.76 mg/l |
| 5 Aug 2025, 13:24 | 18 | 18 mg/l |
| 25 Jul 2025, 11:06 | 18 | 18 mg/l |
| 6 Jun 2025, 09:50 | 6.34 | 6.34 mg/l |
| 15 May 2025, 12:49 | 18.9 | 18.9 mg/l |
| 28 Apr 2025, 13:55 | 7.57 | 7.57 mg/l |
| 13 Mar 2025, 09:53 | 6.99 | 6.99 mg/l |
| 3 Feb 2025, 15:56 | 10.9 | 10.9 mg/l |
| 6 Jan 2025, 11:38 | 6.23 | 6.23 mg/l |
| 2 Dec 2024, 14:08 | 9.38 | 9.38 mg/l |
| 1 Nov 2024, 10:00 | 7.89 | 7.89 mg/l |
| 18 Oct 2024, 12:24 | 7.68 | 7.68 mg/l |
| 9 Sep 2024, 12:27 | 6.23 | 6.23 mg/l |
| 2 Aug 2024, 12:28 | 6.77 | 6.77 mg/l |
| 12 Jul 2024, 09:10 | 5.48 | 5.48 mg/l |
| 6 Jun 2024, 11:09 | 12 | 12 mg/l |
| 6 Mar 2024, 12:20 | 11 | 11 mg/l |
| 8 Feb 2024, 10:45 | 12 | 12 mg/l |
| 9 Jan 2024, 10:03 | 14 | 14 mg/l |
| 8 Dec 2023, 14:26 | 9.08 | 9.08 mg/l |
| 6 Nov 2023, 09:35 | 10.9 | 10.9 mg/l |
| 10 Oct 2023, 14:17 | 8.59 | 8.59 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.4 mg/l
Sampled 7 Aug 2026, 55 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Aug 2026, 10:37 | 0.4 | 0.4 mg/l |
| 21 Jul 2026, 13:25 | 0.4 | 0.4 mg/l |
| 4 Jun 2026, 11:00 | 0.14 | 0.14 mg/l |
| 1 May 2026, 13:32 | 0.18 | 0.18 mg/l |
| 8 Apr 2026, 09:57 | 0.13 | 0.13 mg/l |
| 10 Mar 2026, 10:53 | 0.048 | 0.048 mg/l |
| 2 Feb 2026, 09:43 | 0.1 | 0.1 mg/l |
| 5 Jan 2026, 12:02 | 0.16 | 0.16 mg/l |
| 1 Dec 2025, 15:00 | 0.47 | 0.47 mg/l |
| 7 Nov 2025, 13:45 | 0.27 | 0.27 mg/l |
| 7 Oct 2025, 11:22 | 0.37 | 0.37 mg/l |
| 3 Sep 2025, 13:16 | 0.15 | 0.15 mg/l |
| 5 Aug 2025, 13:24 | 0.38 | 0.38 mg/l |
| 25 Jul 2025, 11:06 | 0.85 | 0.85 mg/l |
| 6 Jun 2025, 09:50 | 0.19 | 0.19 mg/l |
| 15 May 2025, 12:49 | 0.16 | 0.16 mg/l |
| 28 Apr 2025, 13:55 | 0.099 | 0.099 mg/l |
| 13 Mar 2025, 09:53 | 0.093 | 0.093 mg/l |
| 3 Feb 2025, 15:56 | 0.13 | 0.13 mg/l |
| 6 Jan 2025, 11:38 | 0.2 | 0.2 mg/l |
| 2 Dec 2024, 14:08 | 0.18 | 0.18 mg/l |
| 1 Nov 2024, 10:00 | 0.52 | 0.52 mg/l |
| 18 Oct 2024, 12:24 | 0.27 | 0.27 mg/l |
| 9 Sep 2024, 12:27 | 0.2 | 0.2 mg/l |
| 2 Aug 2024, 12:28 | 0.28 | 0.28 mg/l |
| 12 Jul 2024, 09:10 | 0.29 | 0.29 mg/l |
| 6 Jun 2024, 11:09 | 0.4 | 0.4 mg/l |
| 6 Mar 2024, 12:20 | 0.12 | 0.12 mg/l |
| 8 Feb 2024, 10:45 | 0.17 | 0.17 mg/l |
| 9 Jan 2024, 10:03 | 0.14 | 0.14 mg/l |
| 8 Dec 2023, 14:26 | 0.077 | 0.077 mg/l |
| 6 Nov 2023, 09:35 | 0.15 | 0.15 mg/l |
| 10 Oct 2023, 14:17 | 0.33 | 0.33 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1146 µS/cm
Sampled 7 Aug 2026, 55 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Aug 2026, 10:37 | 1146 | 1146 µS/cm |
| 21 Jul 2026, 13:25 | 1139 | 1139 µS/cm |
| 4 Jun 2026, 11:00 | 737 | 737 µS/cm |
| 1 May 2026, 13:32 | 1041 | 1041 µS/cm |
| 8 Apr 2026, 09:57 | 967 | 967 µS/cm |
| 10 Mar 2026, 10:53 | 926 | 926 µS/cm |
| 2 Feb 2026, 09:43 | 887 | 887 µS/cm |
| 5 Jan 2026, 12:02 | 1081 | 1081 µS/cm |
| 1 Dec 2025, 15:00 | 1014 | 1014 µS/cm |
| 7 Nov 2025, 13:45 | 1185 | 1185 µS/cm |
| 7 Oct 2025, 11:22 | 1173 | 1173 µS/cm |
| 3 Sep 2025, 13:16 | 695 | 695 µS/cm |
| 5 Aug 2025, 13:24 | 1112 | 1112 µS/cm |
| 25 Jul 2025, 11:06 | 1028 | 1028 µS/cm |
| 6 Jun 2025, 09:50 | 949 | 949 µS/cm |
| 15 May 2025, 12:49 | 1016 | 1016 µS/cm |
| 28 Apr 2025, 13:55 | 973 | 973 µS/cm |
| 13 Mar 2025, 09:53 | 978 | 978 µS/cm |
| 3 Feb 2025, 15:56 | 948 | 948 µS/cm |
| 6 Jan 2025, 11:38 | 961 | 961 µS/cm |
| 2 Dec 2024, 14:08 | 902 | 902 µS/cm |
| 1 Nov 2024, 10:00 | 911 | 911 µS/cm |
| 18 Oct 2024, 12:24 | 874 | 874 µS/cm |
| 9 Sep 2024, 12:27 | 831 | 831 µS/cm |
| 2 Aug 2024, 12:28 | 1004 | 1004 µS/cm |
| 12 Jul 2024, 09:10 | 790 | 790 µS/cm |
| 6 Jun 2024, 11:09 | 961 | 961 µS/cm |
| 6 Mar 2024, 12:20 | 857 | 857 µS/cm |
| 8 Feb 2024, 10:45 | 889 | 889 µS/cm |
| 9 Jan 2024, 10:03 | 888 | 888 µS/cm |
| 8 Dec 2023, 14:26 | 943 | 943 µS/cm |
| 6 Nov 2023, 09:35 | 838 | 838 µS/cm |
| 10 Oct 2023, 14:17 | 1160 | 1160 µS/cm |
Everything measured here
129 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 129 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 33 | Oct 2023 – Aug 2026 | 92.1% 7 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Aug 2026 | 8.21 mg/l 7 Aug 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Aug 2026 | 20.9 °C 7 Aug 2026 |
| pH 0061 | River water | 35 | Oct 2023 – Aug 2026 | 7.75 7 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 33 | Oct 2023 – Aug 2026 | 0.034 mg/l 7 Aug 2026 |
| Nitrate as N 0117 | River water | 33 | Oct 2023 – Aug 2026 | 15.9 mg/l 7 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 33 | Oct 2023 – Aug 2026 | 0.4 mg/l 7 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Aug 2026 | 1146 µS/cm 7 Aug 2026 |
| 1,1,1,2-Tetrachloroethane 6534 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| 1,1,1-Trichloroethane 3268 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| 1,1,2,2-Tetrachloroethane 7531 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| 1,1,2-Trichloroethane 9811 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| 1,1-Dichloroethane 3269 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| 1,1-Dichloroethylene :- {1,1-Dichloroethene} 9836 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| 1,2-Dichloroethane 3272 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| 1,2-Dimethylbenzene :- {o-Xylene} 9845 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Dec 2025 – Dec 2025 | 0.0028 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Acenaphthene 7395 | River water | 26 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Acenaphthylene 8311 | River water | 27 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 33 | Oct 2023 – Aug 2026 | 190 mg/l 7 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 33 | Oct 2023 – Aug 2026 | 0.00078 mg/l 7 Aug 2026 |
| Anthracene 6753 | River water | 26 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Benzene 3781 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Benzo(a)Anthracene 0772 | River water | 28 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Benzo(a)Pyrene 6399 | River water | 27 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Benzo(b)Fluoranthene 0731 | River water | 27 | Apr 2024 – Aug 2026 | 0.024 µg/l 7 Aug 2026 |
| Benzo(e)Pyrene 8940 | River water | 27 | Apr 2024 – Aug 2026 | 0.013 µg/l 7 Aug 2026 |
| Benzo(g,h,i)Perylene 0714 | River water | 28 | Apr 2024 – Aug 2026 | 0.012 µg/l 7 Aug 2026 |
| Benzo(k)Fluoranthene 0733 | River water | 26 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Bromodichloromethane 3282 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Bromoform :- {Tribromomethane} 3283 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Calcium, Dissolved 0239 | River water | 29 | Apr 2024 – Aug 2026 | 120 mg/l 7 Aug 2026 |
| Carbon tetrachloride :- {Tetrachloromethane} 1049 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 28 | Apr 2024 – Aug 2026 | 5.6 mg/l 7 Aug 2026 |
| Chlorobenzene 3290 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Chlorodibromomethane 3292 | River water | 24 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Chloroform :- {Trichloromethane} 3373 | River water | 25 | Apr 2024 – Aug 2026 | 0.12 µg/l 7 Aug 2026 |
| Chromium 3164 | River water | 29 | Apr 2024 – Aug 2026 | below 0.5 µg/l 7 Aug 2026 |
| Chromium Hexavalent, Dissolved :- {Cr VI} 6619 | River water | 28 | Apr 2024 – Aug 2026 | 0.1 µg/l 7 Aug 2026 |
| Chromium, Dissolved 3409 | River water | 29 | Apr 2024 – Aug 2026 | below 0.5 µg/l 7 Aug 2026 |
| Chrysene 8310 | River water | 27 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene} 6538 | River water | 25 | Apr 2024 – Aug 2026 | below 0.5 µg/l 7 Aug 2026 |
| Dibenzo(a,h)Anthracene 8360 | River water | 28 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Dimethylbenzene : Sum of isomers (1,3- 1,4-) 6716 | River water | 25 | Apr 2024 – Aug 2026 | below 0.2 µg/l 7 Aug 2026 |
| Ethyl tert-butyl ether :- {ETBE} 9844 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Ethylbenzene 4117 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Fluoranthene 0736 | River water | 28 | Apr 2024 – Aug 2026 | 0.015 µg/l 7 Aug 2026 |
| Fluorene 7864 | River water | 27 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 27 | Apr 2024 – Aug 2026 | 0.012 µg/l 7 Aug 2026 |
| Iron 6051 | River water | 6 | Apr 2025 – Jul 2026 | 270 µg/l 21 Jul 2026 |
| Iron, Dissolved 6460 | River water | 6 | Apr 2025 – Jul 2026 | 30 µg/l 21 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 6 | Apr 2025 – Jul 2026 | 5.9 mg/l 21 Jul 2026 |
| MTBE :- {Methyl tert-butyl ether} 6656 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Naphthalene 9669 | River water | 26 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 5 | Apr 2025 – Jul 2026 | 1.3 µg/l 21 Jul 2026 |
| Nickel, Dissolved 3410 | River water | 6 | Apr 2025 – Jul 2026 | 4.5 µg/l 21 Jul 2026 |
| Nitrite as N 0118 | River water | 33 | Oct 2023 – Aug 2026 | 0.062 mg/l 7 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 33 | Oct 2023 – Aug 2026 | 16 mg/l 7 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Dec 2025 – Dec 2025 | 0.0013 µg/l 1 Dec 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Dec 2025 – Dec 2025 | 0.0071 µg/l 1 Dec 2025 |
| Perfluorobutanoic acid 2995 | River water | 1 | Dec 2025 – Dec 2025 | 0.0059 µg/l 1 Dec 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Dec 2025 – Dec 2025 | 0.0011 µg/l 1 Dec 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorodecanoic acid 8892 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Dec 2025 – Dec 2025 | below 0.005 µg/l 1 Dec 2025 |
| Perfluorododecanoic acid 8894 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Dec 2025 – Dec 2025 | 0.0026 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Dec 2025 – Dec 2025 | 0.0011 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Dec 2025 – Dec 2025 | 0.0039 µg/l 1 Dec 2025 |
| Perfluorohexanoic acid 8888 | River water | 1 | Dec 2025 – Dec 2025 | 0.0056 µg/l 1 Dec 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorononanoic acid 8891 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Dec 2025 – Dec 2025 | 0.0034 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Dec 2025 – Dec 2025 | 0.0024 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Dec 2025 – Dec 2025 | 0.0058 µg/l 1 Dec 2025 |
| Perfluorooctanoic acid 8890 | River water | 1 | Dec 2025 – Dec 2025 | 0.0041 µg/l 1 Dec 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoropentanoic acid 8887 | River water | 1 | Dec 2025 – Dec 2025 | 0.0065 µg/l 1 Dec 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Dec 2025 – Dec 2025 | below 0.006 µg/l 1 Dec 2025 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perylene 9003 | River water | 28 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Phenanthrene 9671 | River water | 27 | Apr 2024 – Aug 2026 | below 0.01 µg/l 7 Aug 2026 |
| Pyrene 7325 | River water | 28 | Apr 2024 – Aug 2026 | 0.013 µg/l 7 Aug 2026 |
| Styrene :- {Vinylbenzene} 9888 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| tert-Amyl methyl ether :- {TAME} 9839 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Tetrachloroethylene :- {Perchloroethylene} 3328 | River water | 24 | Apr 2024 – Aug 2026 | 0.19 µg/l 7 Aug 2026 |
| Toluene :- {Methylbenzene} 3784 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene} 6539 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Trichloroethylene :- {Trichloroethene} 3334 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 Aug 2026 |
| Trihalomethanes : Total :- {THM} 1200 | River water | 24 | Apr 2024 – Aug 2026 | 0.42 µg/l 7 Aug 2026 |
| Vinyl chloride :- {Chloroethylene} 6715 | River water | 25 | Apr 2024 – Aug 2026 | below 0.1 µg/l 7 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.