Lee at Lea Valley Road (for Chingford Intake)
EA name: LEE AT LEA VALLEY RD ( FOR CHINGFORD INT (also listed as “LEE AT LEA VALLEY RD ( FOR CHINGFORD INTAKE )”)
Environment Agency sampling point TH-PLER0067 · 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
- 1 Sep 2026, 10:5230 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 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)
- Where
- National Grid 537482, 194974As published, to the nearest 1 m. Open in a map
- River, by its own name
- Lee
- River, by the map
- River LeaPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Nearest gauge upstream
- Waltham Abbey, Sewardstone Road On the Cobbins Brook · 6.0 km along the riverLower Nazeing On the Nazeing Brook · 13 km along the riverRoydon, Glen Faba On the River Stort · 16 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (33 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
172.9%
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | 172.9 | 172.9% |
| 7 Aug 2026, 08:37 | 95.6 | 95.6% |
| 20 Jul 2026, 11:53 | 188.2 | 188.2% |
| 5 Jun 2026, 09:40 | 129.1 | 129.1% |
| 18 May 2026, 09:30 | 89.9 | 89.9% |
| 16 Apr 2026, 12:31 | 137.1 | 137.1% |
| 5 Mar 2026, 12:12 | 122.9 | 122.9% |
| 10 Feb 2026, 09:47 | 99.4 | 99.4% |
| 19 Jan 2026, 11:14 | 103 | 103% |
| 5 Dec 2025, 13:31 | 101.6 | 101.6% |
| 10 Nov 2025, 10:08 | 99.1 | 99.1% |
| 13 Oct 2025, 13:03 | 135 | 135% |
| 23 Sep 2025, 09:54 | 125.3 | 125.3% |
| 13 Aug 2025, 11:47 | 190.9 | 190.9% |
| 11 Jun 2025, 12:27 | 152.1 | 152.1% |
| 19 May 2025, 11:11 | 133.4 | 133.4% |
| 22 Apr 2025, 14:57 | 132.1 | 132.1% |
| 10 Mar 2025, 11:14 | 112.2 | 112.2% |
| 4 Feb 2025, 09:20 | 98.9 | 98.9% |
| 21 Jan 2025, 13:00 | 106.3 | 106.3% |
| 12 Dec 2024, 10:34 | 97.8 | 97.8% |
| 20 Nov 2024, 13:00 | 102.7 | 102.7% |
| 16 Oct 2024, 11:20 | 113.2 | 113.2% |
| 24 Sep 2024, 10:39 | 82.9 | 82.9% |
| 19 Aug 2024, 10:45 | 160.1 | 160.1% |
| 18 Jul 2024, 11:57 | 147 | 147% |
| 20 Jun 2024, 11:49 | 165.1 | 165.1% |
| 14 Mar 2024, 10:54 | 101.9 | 101.9% |
| 12 Feb 2024, 09:36 | 95.7 | 95.7% |
| 15 Jan 2024, 12:19 | 103.2 | 103.2% |
| 8 Dec 2023, 12:38 | 100.6 | 100.6% |
| 8 Nov 2023, 10:37 | 99.6 | 99.6% |
| 23 Oct 2023, 12:02 | 93.3 | 93.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
15.9 mg/l
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | 15.9 | 15.9 mg/l |
| 7 Aug 2026, 08:37 | 8.8 | 8.8 mg/l |
| 20 Jul 2026, 11:53 | 16.9 | 16.9 mg/l |
| 5 Jun 2026, 09:40 | 12.3 | 12.3 mg/l |
| 18 May 2026, 09:30 | 9.18 | 9.18 mg/l |
| 16 Apr 2026, 12:31 | 14.2 | 14.2 mg/l |
| 5 Mar 2026, 12:12 | 13.5 | 13.5 mg/l |
| 10 Feb 2026, 09:47 | 11.7 | 11.7 mg/l |
| 19 Jan 2026, 11:14 | 12.1 | 12.1 mg/l |
| 5 Dec 2025, 13:31 | 12.3 | 12.3 mg/l |
| 10 Nov 2025, 10:08 | 10.6 | 10.6 mg/l |
| 13 Oct 2025, 13:03 | 13.7 | 13.7 mg/l |
| 23 Sep 2025, 09:54 | 13 | 13 mg/l |
| 13 Aug 2025, 11:47 | 16.6 | 16.6 mg/l |
| 11 Jun 2025, 12:27 | 14.5 | 14.5 mg/l |
| 19 May 2025, 11:11 | 13.1 | 13.1 mg/l |
| 22 Apr 2025, 14:57 | 13.4 | 13.4 mg/l |
| 10 Mar 2025, 11:14 | 12.7 | 12.7 mg/l |
| 4 Feb 2025, 09:20 | 12.2 | 12.2 mg/l |
| 21 Jan 2025, 13:00 | 13 | 13 mg/l |
| 12 Dec 2024, 10:34 | 11.6 | 11.6 mg/l |
| 20 Nov 2024, 13:00 | 12 | 12 mg/l |
| 16 Oct 2024, 11:20 | 11.7 | 11.7 mg/l |
| 24 Sep 2024, 10:39 | 7.95 | 7.95 mg/l |
| 19 Aug 2024, 10:45 | 14.7 | 14.7 mg/l |
| 18 Jul 2024, 11:57 | 13.3 | 13.3 mg/l |
| 20 Jun 2024, 11:49 | 15.2 | 15.2 mg/l |
| 14 Mar 2024, 10:54 | 11.4 | 11.4 mg/l |
| 12 Feb 2024, 09:36 | 11.4 | 11.4 mg/l |
| 15 Jan 2024, 12:19 | 13.1 | 13.1 mg/l |
| 8 Dec 2023, 12:38 | 12.2 | 12.2 mg/l |
| 8 Nov 2023, 10:37 | 11.2 | 11.2 mg/l |
| 23 Oct 2023, 12:02 | 9.59 | 9.59 mg/l |
Water temperature
code 0076 · °C
19.2 °C
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | 19.2 | 19.2 °C |
| 7 Aug 2026, 08:37 | 19.2 | 19.2 °C |
| 20 Jul 2026, 11:53 | 20.4 | 20.4 °C |
| 5 Jun 2026, 09:40 | 17.7 | 17.7 °C |
| 18 May 2026, 09:30 | 14.3 | 14.3 °C |
| 16 Apr 2026, 12:31 | 13.7 | 13.7 °C |
| 5 Mar 2026, 12:12 | 10.9 | 10.9 °C |
| 10 Feb 2026, 09:47 | 8.3 | 8.3 °C |
| 19 Jan 2026, 11:14 | 8.4 | 8.4 °C |
| 5 Dec 2025, 13:31 | 7.1 | 7.1 °C |
| 10 Nov 2025, 10:08 | 12.2 | 12.2 °C |
| 13 Oct 2025, 13:03 | 14.5 | 14.5 °C |
| 23 Sep 2025, 09:54 | 13.7 | 13.7 °C |
| 13 Aug 2025, 11:47 | 22.2 | 22.2 °C |
| 11 Jun 2025, 12:27 | 17.7 | 17.7 °C |
| 19 May 2025, 11:11 | 16 | 16 °C |
| 22 Apr 2025, 14:57 | 14.7 | 14.7 °C |
| 10 Mar 2025, 11:14 | 9.9 | 9.9 °C |
| 4 Feb 2025, 09:20 | 6.2 | 6.2 °C |
| 21 Jan 2025, 13:00 | 6.6 | 6.6 °C |
| 12 Dec 2024, 10:34 | 7.8 | 7.8 °C |
| 20 Nov 2024, 13:00 | 8.3 | 8.3 °C |
| 16 Oct 2024, 11:20 | 13.6 | 13.6 °C |
| 24 Sep 2024, 10:39 | 17.2 | 17.2 °C |
| 19 Aug 2024, 10:45 | 19.3 | 19.3 °C |
| 18 Jul 2024, 11:57 | 20.1 | 20.1 °C |
| 20 Jun 2024, 11:49 | 19.2 | 19.2 °C |
| 14 Mar 2024, 10:54 | 10.2 | 10.2 °C |
| 12 Feb 2024, 09:36 | 7.8 | 7.8 °C |
| 15 Jan 2024, 12:19 | 5.2 | 5.2 °C |
| 8 Dec 2023, 12:38 | 7 | 7 °C |
| 8 Nov 2023, 10:37 | 10.1 | 10.1 °C |
| 23 Oct 2023, 12:02 | 14 | 14 °C |
pH
code 0061
8.65
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | 8.65 | 8.65 |
| 7 Aug 2026, 08:37 | 8.14 | 8.14 |
| 20 Jul 2026, 11:53 | 8.71 | 8.71 |
| 5 Jun 2026, 09:40 | 8.46 | 8.46 |
| 18 May 2026, 09:30 | 7.66 | 7.66 |
| 16 Apr 2026, 12:31 | 8.61 | 8.61 |
| 5 Mar 2026, 12:12 | 8.48 | 8.48 |
| 10 Feb 2026, 09:47 | 8.06 | 8.06 |
| 19 Jan 2026, 11:14 | 8.24 | 8.24 |
| 5 Dec 2025, 13:31 | 8.05 | 8.05 |
| 10 Nov 2025, 10:08 | 8.27 | 8.27 |
| 13 Oct 2025, 13:03 | 8.54 | 8.54 |
| 23 Sep 2025, 09:54 | 8.33 | 8.33 |
| 13 Aug 2025, 11:47 | 8.87 | 8.87 |
| 11 Jun 2025, 12:27 | 8.58 | 8.58 |
| 19 May 2025, 11:11 | 8.5 | 8.5 |
| 22 Apr 2025, 14:57 | 8.5 | 8.5 |
| 10 Mar 2025, 11:14 | 8.3 | 8.3 |
| 4 Feb 2025, 09:20 | 8.16 | 8.16 |
| 21 Jan 2025, 13:00 | 8.19 | 8.19 |
| 12 Dec 2024, 10:34 | 8.08 | 8.08 |
| 20 Nov 2024, 13:00 | 8.21 | 8.21 |
| 16 Oct 2024, 11:20 | 8.18 | 8.18 |
| 24 Sep 2024, 10:39 | 8.25 | 8.25 |
| 19 Aug 2024, 10:45 | 8.58 | 8.58 |
| 18 Jul 2024, 11:57 | 8.5 | 8.5 |
| 20 Jun 2024, 11:49 | 8.73 | 8.73 |
| 14 Mar 2024, 10:54 | 8.14 | 8.14 |
| 12 Feb 2024, 09:36 | 7.93 | 7.93 |
| 15 Jan 2024, 12:19 | 8.32 | 8.32 |
| 8 Dec 2023, 12:38 | 8.08 | 8.08 |
| 8 Nov 2023, 10:37 | 8.06 | 8.06 |
| 23 Oct 2023, 12:02 | 7.79 | 7.79 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Aug 2026, 08:37 | 0.067 | 0.067 mg/l |
| 20 Jul 2026, 11:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jun 2026, 09:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 May 2026, 09:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2026, 12:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2026, 12:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Feb 2026, 09:47 | 0.089 | 0.089 mg/l |
| 19 Jan 2026, 11:14 | 0.059 | 0.059 mg/l |
| 5 Dec 2025, 13:31 | 0.036 | 0.036 mg/l |
| 10 Nov 2025, 10:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Oct 2025, 13:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Sep 2025, 09:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Aug 2025, 11:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Jun 2025, 12:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 May 2025, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Apr 2025, 14:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2025, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Feb 2025, 09:20 | 0.057 | 0.057 mg/l |
| 21 Jan 2025, 13:00 | 0.072 | 0.072 mg/l |
| 12 Dec 2024, 10:34 | 0.065 | 0.065 mg/l |
| 20 Nov 2024, 13:00 | 0.054 | 0.054 mg/l |
| 16 Oct 2024, 11:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Sep 2024, 10:39 | 0.11 | 0.11 mg/l |
| 19 Aug 2024, 10:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jul 2024, 11:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jun 2024, 11:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Mar 2024, 10:54 | 0.11 | 0.11 mg/l |
| 12 Feb 2024, 09:36 | 0.079 | 0.079 mg/l |
| 15 Jan 2024, 12:19 | 0.068 | 0.068 mg/l |
| 8 Dec 2023, 12:38 | 0.045 | 0.045 mg/l |
| 8 Nov 2023, 10:37 | 0.031 | 0.031 mg/l |
| 23 Oct 2023, 12:02 | 0.067 | 0.067 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.26 mg/l
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | 9.26 | 9.26 mg/l |
| 7 Aug 2026, 08:37 | 8.05 | 8.05 mg/l |
| 20 Jul 2026, 11:53 | 11 | 11 mg/l |
| 5 Jun 2026, 09:40 | 8.77 | 8.77 mg/l |
| 18 May 2026, 09:30 | 6.8 | 6.8 mg/l |
| 16 Apr 2026, 12:31 | 11 | 11 mg/l |
| 5 Mar 2026, 12:12 | 9.18 | 9.18 mg/l |
| 10 Feb 2026, 09:47 | 9.77 | 9.77 mg/l |
| 19 Jan 2026, 11:14 | 13 | 13 mg/l |
| 5 Dec 2025, 13:31 | 9.27 | 9.27 mg/l |
| 10 Nov 2025, 10:08 | 9.67 | 9.67 mg/l |
| 13 Oct 2025, 13:03 | 11 | 11 mg/l |
| 23 Sep 2025, 09:54 | 12 | 12 mg/l |
| 13 Aug 2025, 11:47 | 11 | 11 mg/l |
| 11 Jun 2025, 12:27 | 9.97 | 9.97 mg/l |
| 19 May 2025, 11:11 | 12 | 12 mg/l |
| 22 Apr 2025, 14:57 | 8.58 | 8.58 mg/l |
| 10 Mar 2025, 11:14 | 8.77 | 8.77 mg/l |
| 4 Feb 2025, 09:20 | 8.96 | 8.96 mg/l |
| 21 Jan 2025, 13:00 | 9.45 | 9.45 mg/l |
| 12 Dec 2024, 10:34 | 9.06 | 9.06 mg/l |
| 20 Nov 2024, 13:00 | 8.67 | 8.67 mg/l |
| 16 Oct 2024, 11:20 | 8.78 | 8.78 mg/l |
| 24 Sep 2024, 10:39 | 5.84 | 5.84 mg/l |
| 19 Aug 2024, 10:45 | 8.48 | 8.48 mg/l |
| 18 Jul 2024, 11:57 | 6.27 | 6.27 mg/l |
| 20 Jun 2024, 11:49 | 7.88 | 7.88 mg/l |
| 14 Mar 2024, 10:54 | 7.45 | 7.45 mg/l |
| 12 Feb 2024, 09:36 | 7.36 | 7.36 mg/l |
| 15 Jan 2024, 12:19 | 9.57 | 9.57 mg/l |
| 8 Dec 2023, 12:38 | 11 | 11 mg/l |
| 8 Nov 2023, 10:37 | 9.27 | 9.27 mg/l |
| 23 Oct 2023, 12:02 | 5.88 | 5.88 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.29 mg/l
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | 0.29 | 0.29 mg/l |
| 7 Aug 2026, 08:37 | 0.23 | 0.23 mg/l |
| 20 Jul 2026, 11:53 | 0.37 | 0.37 mg/l |
| 5 Jun 2026, 09:40 | 0.27 | 0.27 mg/l |
| 18 May 2026, 09:30 | 1.4 | 1.4 mg/l |
| 16 Apr 2026, 12:31 | 0.2 | 0.2 mg/l |
| 5 Mar 2026, 12:12 | 0.12 | 0.12 mg/l |
| 10 Feb 2026, 09:47 | 0.14 | 0.14 mg/l |
| 19 Jan 2026, 11:14 | 0.16 | 0.16 mg/l |
| 5 Dec 2025, 13:31 | 0.21 | 0.21 mg/l |
| 10 Nov 2025, 10:08 | 0.23 | 0.23 mg/l |
| 13 Oct 2025, 13:03 | 0.21 | 0.21 mg/l |
| 23 Sep 2025, 09:54 | 0.25 | 0.25 mg/l |
| 13 Aug 2025, 11:47 | 0.22 | 0.22 mg/l |
| 11 Jun 2025, 12:27 | 0.27 | 0.27 mg/l |
| 19 May 2025, 11:11 | 0.22 | 0.22 mg/l |
| 22 Apr 2025, 14:57 | 0.14 | 0.14 mg/l |
| 10 Mar 2025, 11:14 | 0.084 | 0.084 mg/l |
| 4 Feb 2025, 09:20 | 0.11 | 0.11 mg/l |
| 21 Jan 2025, 13:00 | 0.13 | 0.13 mg/l |
| 12 Dec 2024, 10:34 | 0.15 | 0.15 mg/l |
| 20 Nov 2024, 13:00 | 0.2 | 0.2 mg/l |
| 16 Oct 2024, 11:20 | 0.19 | 0.19 mg/l |
| 24 Sep 2024, 10:39 | 0.31 | 0.31 mg/l |
| 19 Aug 2024, 10:45 | 0.21 | 0.21 mg/l |
| 18 Jul 2024, 11:57 | 0.24 | 0.24 mg/l |
| 20 Jun 2024, 11:49 | 0.2 | 0.2 mg/l |
| 14 Mar 2024, 10:54 | 0.15 | 0.15 mg/l |
| 12 Feb 2024, 09:36 | 0.13 | 0.13 mg/l |
| 15 Jan 2024, 12:19 | 0.16 | 0.16 mg/l |
| 8 Dec 2023, 12:38 | 0.14 | 0.14 mg/l |
| 8 Nov 2023, 10:37 | 0.17 | 0.17 mg/l |
| 23 Oct 2023, 12:02 | 0.4 | 0.4 mg/l |
Turbidity
code 6396 · NTU
4.1 NTU
Sampled 1 Sep 2026, 30 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | 4.1 | 4.1 NTU |
| 7 Aug 2026, 08:37 | 13 | 13 NTU |
| 20 Jul 2026, 11:53 | 1.1 | 1.1 NTU |
| 5 Jun 2026, 09:40 | 6.4 | 6.4 NTU |
| 18 May 2026, 09:30 | <1 | below 1 NTU (not detected above this) |
| 16 Apr 2026, 12:31 | 1.3 | 1.3 NTU |
| 5 Mar 2026, 12:12 | 2.9 | 2.9 NTU |
| 10 Feb 2026, 09:47 | 15 | 15 NTU |
| 19 Jan 2026, 11:14 | 14 | 14 NTU |
| 5 Dec 2025, 13:31 | 9 | 9 NTU |
| 10 Nov 2025, 10:08 | 1.3 | 1.3 NTU |
| 13 Oct 2025, 13:03 | <1 | below 1 NTU (not detected above this) |
| 22 Apr 2025, 14:57 | 2.5 | 2.5 NTU |
| 10 Mar 2025, 11:14 | 3 | 3 NTU |
| 4 Feb 2025, 09:20 | 5.9 | 5.9 NTU |
| 21 Jan 2025, 13:00 | 3.1 | 3.1 NTU |
| 12 Dec 2024, 10:34 | 23 | 23 NTU |
| 20 Nov 2024, 13:00 | 5.9 | 5.9 NTU |
| 16 Oct 2024, 11:20 | 3.1 | 3.1 NTU |
| 24 Sep 2024, 10:39 | 1.2 | 1.2 NTU |
| 19 Aug 2024, 10:45 | <1 | below 1 NTU (not detected above this) |
| 18 Jul 2024, 11:57 | 2 | 2 NTU |
| 20 Jun 2024, 11:49 | <1 | below 1 NTU (not detected above this) |
| 14 Mar 2024, 10:54 | 22 | 22 NTU |
| 12 Feb 2024, 09:36 | 33 | 33 NTU |
| 15 Jan 2024, 12:19 | 5.5 | 5.5 NTU |
| 8 Dec 2023, 12:38 | 20 | 20 NTU |
| 8 Nov 2023, 10:37 | 4.8 | 4.8 NTU |
| 23 Oct 2023, 12:02 | 2.6 | 2.6 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
795 µS/cm
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:52 | 795 | 795 µS/cm |
| 7 Aug 2026, 08:37 | 814 | 814 µS/cm |
| 20 Jul 2026, 11:53 | 859 | 859 µS/cm |
| 5 Jun 2026, 09:40 | 788 | 788 µS/cm |
| 18 May 2026, 09:30 | 695 | 695 µS/cm |
| 16 Apr 2026, 12:31 | 814 | 814 µS/cm |
| 5 Mar 2026, 12:12 | 784 | 784 µS/cm |
| 10 Feb 2026, 09:47 | 690 | 690 µS/cm |
| 19 Jan 2026, 11:14 | 791 | 791 µS/cm |
| 5 Dec 2025, 13:31 | 838 | 838 µS/cm |
| 10 Nov 2025, 10:08 | 817 | 817 µS/cm |
| 13 Oct 2025, 13:03 | 830 | 830 µS/cm |
| 23 Sep 2025, 09:54 | 848 | 848 µS/cm |
| 13 Aug 2025, 11:47 | 864 | 864 µS/cm |
| 11 Jun 2025, 12:27 | 792 | 792 µS/cm |
| 19 May 2025, 11:11 | 842 | 842 µS/cm |
| 22 Apr 2025, 14:57 | 798 | 798 µS/cm |
| 10 Mar 2025, 11:14 | 801 | 801 µS/cm |
| 4 Feb 2025, 09:20 | 803 | 803 µS/cm |
| 21 Jan 2025, 13:00 | 825 | 825 µS/cm |
| 12 Dec 2024, 10:34 | 659 | 659 µS/cm |
| 20 Nov 2024, 13:00 | 788 | 788 µS/cm |
| 16 Oct 2024, 11:20 | 753 | 753 µS/cm |
| 24 Sep 2024, 10:39 | 710 | 710 µS/cm |
| 19 Aug 2024, 10:45 | 823 | 823 µS/cm |
| 18 Jul 2024, 11:57 | 648 | 648 µS/cm |
| 20 Jun 2024, 11:49 | 775 | 775 µS/cm |
| 14 Mar 2024, 10:54 | 685 | 685 µS/cm |
| 12 Feb 2024, 09:36 | 599 | 599 µS/cm |
| 15 Jan 2024, 12:19 | 794 | 794 µS/cm |
| 8 Dec 2023, 12:38 | 764 | 764 µS/cm |
| 8 Nov 2023, 10:37 | 715 | 715 µS/cm |
| 23 Oct 2023, 12:02 | 678 | 678 µS/cm |
Everything measured here
83 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 83 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 33 | Oct 2023 – Sep 2026 | 172.9% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Sep 2026 | 15.9 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Sep 2026 | 19.2 °C 1 Sep 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Sep 2026 | 8.65 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 33 | Oct 2023 – Sep 2026 | below 0.03 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 33 | Oct 2023 – Sep 2026 | 9.26 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 33 | Oct 2023 – Sep 2026 | 0.29 mg/l 1 Sep 2026 |
| Turbidity 6396 | River water | 29 | Oct 2023 – Sep 2026 | 4.1 NTU 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Sep 2026 | 795 µS/cm 1 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | Nov 2023 – Jan 2025 | below 0.002 µg/l 21 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 4 | Nov 2023 – Jan 2025 | below 0.004 µg/l 21 Jan 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 4 | Nov 2023 – Jan 2025 | below 0.005 µg/l 21 Jan 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 33 | Oct 2023 – Sep 2026 | 210 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 33 | Oct 2023 – Sep 2026 | below 0.00107 mg/l 1 Sep 2026 |
| Arsenic, Dissolved 6045 | River water | 31 | Oct 2023 – Sep 2026 | 1.3 µg/l 1 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | below 1 mg/l 18 May 2026 |
| Boron, Dissolved 9447 | River water | 32 | Oct 2023 – Sep 2026 | below 100 µg/l 1 Sep 2026 |
| Cadmium, Dissolved 0106 | River water | 32 | Oct 2023 – Sep 2026 | 0.028 µg/l 1 Sep 2026 |
| Calcium, Dissolved 0239 | River water | 2 | Oct 2023 – Jan 2024 | 130 mg/l 15 Jan 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 24 | Oct 2023 – Sep 2026 | 4.3 mg/l 1 Sep 2026 |
| Chloride 0172 | River water | 29 | Oct 2023 – Sep 2026 | 73 mg/l 1 Sep 2026 |
| Chlorine : Total Available 0912 | River water | 5 | Apr 2025 – Jul 2026 | 0.01 mg/l 20 Jul 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 25 | Oct 2023 – Sep 2026 | 33 µg/l 1 Sep 2026 |
| Chromium, Dissolved 3409 | River water | 32 | Oct 2023 – Sep 2026 | below 0.5 µg/l 1 Sep 2026 |
| Copper, Dissolved 6450 | River water | 32 | Oct 2023 – Sep 2026 | 2.3 µg/l 1 Sep 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| Iron, Dissolved 6460 | River water | 32 | Oct 2023 – Sep 2026 | below 30 µg/l 1 Sep 2026 |
| Lead, Dissolved 0052 | River water | 32 | Oct 2023 – Sep 2026 | below 0.1 µg/l 1 Sep 2026 |
| Magnesium, Dissolved 0235 | River water | 2 | Oct 2023 – Jan 2024 | 5.1 mg/l 15 Jan 2024 |
| Manganese, Dissolved 6458 | River water | 32 | Oct 2023 – Sep 2026 | below 10 µg/l 1 Sep 2026 |
| Mercury, Dissolved 0103 | River water | 33 | Oct 2023 – Sep 2026 | below 0.01 µg/l 1 Sep 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 4 | Nov 2023 – Jan 2025 | below 0.002 µg/l 21 Jan 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 4 | Nov 2023 – Jan 2025 | below 0.002 µg/l 21 Jan 2025 |
| Nickel, Dissolved 3410 | River water | 32 | Oct 2023 – Sep 2026 | 3.3 µg/l 1 Sep 2026 |
| Nitrite as N 0118 | River water | 33 | Oct 2023 – Sep 2026 | 0.04 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 33 | Oct 2023 – Sep 2026 | 9.3 mg/l 1 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 4 | Nov 2023 – Jan 2025 | 0.0012 µg/l 21 Jan 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 4 | Nov 2023 – Jan 2025 | 0.0038 µg/l 21 Jan 2025 |
| Perfluorobutanoic acid 2995 | River water | 4 | Nov 2023 – Jan 2025 | below 0.004 µg/l 21 Jan 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 4 | Nov 2023 – Jan 2025 | 0.001 µg/l 21 Jan 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 4 | Nov 2023 – Jan 2025 | below 0.002 µg/l 21 Jan 2025 |
| Perfluorodecanoic acid 8892 | River water | 4 | Nov 2023 – Jan 2025 | below 0.002 µg/l 21 Jan 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 4 | Nov 2023 – Jan 2025 | below 0.005 µg/l 21 Jan 2025 |
| Perfluorododecanoic acid 8894 | River water | 3 | Nov 2023 – Jan 2025 | below 0.002 µg/l 21 Jan 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Perfluoroheptanoic acid 8889 | River water | 4 | Nov 2023 – Jan 2025 | 0.0015 µg/l 21 Jan 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 4 | Nov 2023 – Jan 2025 | 0.00068 µg/l 21 Jan 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | Nov 2023 – Jan 2025 | 0.0029 µg/l 21 Jan 2025 |
| Perfluorohexanoic acid 8888 | River water | 4 | Nov 2023 – Jan 2025 | 0.0033 µg/l 21 Jan 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 4 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Perfluorononanoic acid 8891 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 4 | Nov 2023 – Jan 2025 | below 0.002 µg/l 21 Jan 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 4 | Nov 2023 – Jan 2025 | below 0.001 µg/l 21 Jan 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | Nov 2023 – Jan 2025 | 0.0026 µg/l 21 Jan 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | Nov 2023 – Jan 2025 | 0.0029 µg/l 21 Jan 2025 |
| Perfluorooctanoic acid 8890 | River water | 4 | Nov 2023 – Jan 2025 | 0.0023 µg/l 21 Jan 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | Nov 2023 – Jan 2025 | below 0.0005 µg/l 21 Jan 2025 |
| Perfluoropentanoic acid 8887 | River water | 4 | Nov 2023 – Jan 2025 | 0.0039 µg/l 21 Jan 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 4 | Nov 2023 – Jan 2025 | below 0.006 µg/l 21 Jan 2025 |
| Perfluorotridecanoic acid 2955 | River water | 4 | Nov 2023 – Jan 2025 | below 0.005 µg/l 21 Jan 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 4 | Nov 2023 – Jan 2025 | below 0.004 µg/l 21 Jan 2025 |
| Perfluoroundecanoic acid 8893 | River water | 4 | Nov 2023 – Jan 2025 | below 0.002 µg/l 21 Jan 2025 |
| Phosphorus, Total as P 0348 | River water | 29 | Oct 2023 – Sep 2026 | 0.34 mg/l 1 Sep 2026 |
| Potassium, Dissolved 0209 | River water | 32 | Oct 2023 – Sep 2026 | 10 mg/l 1 Sep 2026 |
| Silica, reactive as SiO2 0182 | River water | 29 | Oct 2023 – Sep 2026 | 9.8 mg/l 1 Sep 2026 |
| Sodium, Dissolved 0205 | River water | 32 | Oct 2023 – Sep 2026 | 49 mg/l 1 Sep 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 32 | Oct 2023 – Sep 2026 | 61 mg/l 1 Sep 2026 |
| Zinc, Dissolved 3408 | River water | 32 | Oct 2023 – Sep 2026 | 3.9 µg/l 1 Sep 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.