River Kemp at Snakescroft Brook upstream of Bishops Castle sewage treatment works
EA name: R.KEMP AT SNAKESCROFT BK US BIS CSTL STW (also listed as “RIVER KEMP AT SNAKESCROFT BK US BISHOPS CASTLE STW”)
Environment Agency sampling point MD-20792180 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 21 Sep 2026, 11:2310 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 34 since 4 Dec 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring) · results completed 23 Sep 2026
- Where
- National Grid 332800, 287700As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Kemp
- River, by the map
- Not placedGrid reference only to 100 m and no line carries the name it gives, so position alone cannot choose. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (23 samples)
Planned investigation (local monitoring) (7 samples)
Unplanned reactive monitoring (pollution incidents) (4 samples)
Results here were completed a median of 8 days after the sample was taken (2 to 16 days, 11 samples). 5 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
81%
Sampled 17 Jun 2026, 3 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Jun 2026, 15:10 | 81 | 81% |
| 27 Apr 2026, 11:11 | 95.1 | 95.1% |
| 25 Feb 2026, 10:05 | 94.8 | 94.8% |
| 9 Dec 2025, 11:54 | 92.5 | 92.5% |
| 25 Nov 2025, 10:37 | 91.1 | 91.1% |
| 8 Oct 2025, 10:51 | 89.9 | 89.9% |
| 11 Sep 2025, 11:57 | 81.7 | 81.7% |
| 28 Aug 2025, 13:36 | 82 | 82% |
| 5 Jun 2025, 10:59 | 86.8 | 86.8% |
| 9 May 2025, 12:59 | 96.5 | 96.5% |
| 9 May 2025, 12:54 | 95.7 | 95.7% |
| 23 Apr 2025, 13:19 | 91.9 | 91.9% |
| 10 Apr 2025, 13:13 | 103 | 103% |
| 7 Mar 2025, 12:19 | 95.1 | 95.1% |
| 7 Feb 2025, 10:27 | 92.7 | 92.7% |
| 23 Jan 2025, 10:23 | 92.5 | 92.5% |
| 2 Dec 2024, 11:59 | 92 | 92% |
| 29 Nov 2024, 09:00 | 93.5 | 93.5% |
| 28 Oct 2024, 11:07 | 87.6 | 87.6% |
| 23 Sep 2024, 10:26 | 82.5 | 82.5% |
| 15 Jul 2024, 11:23 | 90 | 90% |
| 21 Jun 2024, 09:42 | 77.8 | 77.8% |
| 17 May 2024, 10:52 | 85.9 | 85.9% |
| 15 Apr 2024, 10:14 | 99.7 | 99.7% |
| 18 Mar 2024, 10:36 | 98.7 | 98.7% |
| 19 Feb 2024, 10:23 | 94.3 | 94.3% |
| 15 Jan 2024, 10:17 | 88.8 | 88.8% |
| 4 Dec 2023, 11:17 | 86.8 | 86.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.06 mg/l
Sampled 17 Jun 2026, 3 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Jun 2026, 15:10 | 8.06 | 8.06 mg/l |
| 27 Apr 2026, 11:11 | 10.4 | 10.4 mg/l |
| 25 Feb 2026, 10:05 | 11 | 11 mg/l |
| 9 Dec 2025, 11:54 | 10.4 | 10.4 mg/l |
| 25 Nov 2025, 10:37 | 11.2 | 11.2 mg/l |
| 8 Oct 2025, 10:51 | 9.54 | 9.54 mg/l |
| 11 Sep 2025, 11:57 | 8.49 | 8.49 mg/l |
| 28 Aug 2025, 13:36 | 8.21 | 8.21 mg/l |
| 5 Jun 2025, 10:59 | 9.21 | 9.21 mg/l |
| 9 May 2025, 12:59 | 10.8 | 10.8 mg/l |
| 9 May 2025, 12:54 | 10.7 | 10.7 mg/l |
| 23 Apr 2025, 13:19 | 10.3 | 10.3 mg/l |
| 10 Apr 2025, 13:13 | 11.7 | 11.7 mg/l |
| 7 Mar 2025, 12:19 | 11.1 | 11.1 mg/l |
| 7 Feb 2025, 10:27 | 11.8 | 11.8 mg/l |
| 23 Jan 2025, 10:23 | 11.7 | 11.7 mg/l |
| 2 Dec 2024, 11:59 | 10.8 | 10.8 mg/l |
| 29 Nov 2024, 09:00 | 11.3 | 11.3 mg/l |
| 28 Oct 2024, 11:07 | 9.48 | 9.48 mg/l |
| 23 Sep 2024, 10:26 | 8.54 | 8.54 mg/l |
| 15 Jul 2024, 11:23 | 9.33 | 9.33 mg/l |
| 21 Jun 2024, 09:42 | 8.31 | 8.31 mg/l |
| 17 May 2024, 10:52 | 9.09 | 9.09 mg/l |
| 15 Apr 2024, 10:14 | 11.6 | 11.6 mg/l |
| 18 Mar 2024, 10:36 | 11.4 | 11.4 mg/l |
| 19 Feb 2024, 10:23 | 11 | 11 mg/l |
| 15 Jan 2024, 10:17 | 11.3 | 11.3 mg/l |
| 4 Dec 2023, 11:17 | 10.9 | 10.9 mg/l |
Water temperature
code 0076 · °C
15.5 °C
Sampled 17 Jun 2026, 3 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Jun 2026, 15:10 | 15.5 | 15.5 °C |
| 27 Apr 2026, 11:11 | 11.4 | 11.4 °C |
| 25 Feb 2026, 10:05 | 8.6 | 8.6 °C |
| 9 Dec 2025, 11:54 | 10.2 | 10.2 °C |
| 25 Nov 2025, 10:37 | 6.3 | 6.3 °C |
| 8 Oct 2025, 10:51 | 12.6 | 12.6 °C |
| 11 Sep 2025, 11:57 | 13.5 | 13.5 °C |
| 28 Aug 2025, 13:36 | 15.2 | 15.2 °C |
| 5 Jun 2025, 10:59 | 12.6 | 12.6 °C |
| 9 May 2025, 12:59 | 10.4 | 10.4 °C |
| 9 May 2025, 12:54 | 10.4 | 10.4 °C |
| 23 Apr 2025, 13:19 | 10.1 | 10.1 °C |
| 10 Apr 2025, 13:13 | 9.5 | 9.5 °C |
| 7 Mar 2025, 12:19 | 8.5 | 8.5 °C |
| 7 Feb 2025, 10:27 | 5.1 | 5.1 °C |
| 23 Jan 2025, 10:23 | 5.4 | 5.4 °C |
| 2 Dec 2024, 11:59 | 8.2 | 8.2 °C |
| 29 Nov 2024, 09:00 | 7.1 | 7.1 °C |
| 28 Oct 2024, 11:07 | 11.7 | 11.7 °C |
| 23 Sep 2024, 10:26 | 13.7 | 13.7 °C |
| 15 Jul 2024, 11:23 | 13.6 | 13.6 °C |
| 21 Jun 2024, 09:42 | 12.3 | 12.3 °C |
| 17 May 2024, 10:52 | 12.7 | 12.7 °C |
| 15 Apr 2024, 10:14 | 8.5 | 8.5 °C |
| 18 Mar 2024, 10:36 | 8.8 | 8.8 °C |
| 19 Feb 2024, 10:23 | 8.4 | 8.4 °C |
| 15 Jan 2024, 10:17 | 5.1 | 5.1 °C |
| 4 Dec 2023, 11:17 | 5.5 | 5.5 °C |
pH
code 0061
7.94
Sampled 17 Jun 2026, 3 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Jun 2026, 15:10 | 7.94 | 7.94 |
| 27 Apr 2026, 11:11 | 8.15 | 8.15 |
| 25 Feb 2026, 10:05 | 7.87 | 7.87 |
| 9 Dec 2025, 11:54 | 7.54 | 7.54 |
| 25 Nov 2025, 10:37 | 7.56 | 7.56 |
| 8 Oct 2025, 10:51 | 7.95 | 7.95 |
| 11 Sep 2025, 11:57 | 8.05 | 8.05 |
| 28 Aug 2025, 13:36 | 7.92 | 7.92 |
| 5 Jun 2025, 10:59 | 7.93 | 7.93 |
| 9 May 2025, 12:59 | 8.24 | 8.24 |
| 9 May 2025, 12:54 | 8.24 | 8.24 |
| 23 Apr 2025, 13:19 | 7.87 | 7.87 |
| 10 Apr 2025, 13:13 | 8.36 | 8.36 |
| 7 Mar 2025, 12:19 | 7.84 | 7.84 |
| 7 Feb 2025, 10:27 | 7.94 | 7.94 |
| 23 Jan 2025, 10:23 | 7.61 | 7.61 |
| 2 Dec 2024, 11:59 | 7.74 | 7.74 |
| 29 Nov 2024, 09:00 | 7.87 | 7.87 |
| 28 Oct 2024, 11:07 | 7.75 | 7.75 |
| 23 Sep 2024, 10:26 | 7.47 | 7.47 |
| 15 Jul 2024, 11:23 | 8.12 | 8.12 |
| 21 Jun 2024, 09:42 | 8.01 | 8.01 |
| 17 May 2024, 10:52 | 7.8 | 7.8 |
| 15 Apr 2024, 10:14 | 7.54 | 7.54 |
| 18 Mar 2024, 10:36 | 7.63 | 7.63 |
| 19 Feb 2024, 10:23 | 7.51 | 7.51 |
| 15 Jan 2024, 10:17 | 7.6 | 7.6 |
| 4 Dec 2023, 11:17 | 7.26 | 7.26 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.039 mg/l
Sampled 17 Jun 2026, 3 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Jun 2026, 15:10 | 0.039 | 0.039 mg/l |
| 27 Apr 2026, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Feb 2026, 10:05 | 0.036 | 0.036 mg/l |
| 9 Dec 2025, 11:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Nov 2025, 10:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2025, 10:51 | 0.043 | 0.043 mg/l |
| 11 Sep 2025, 11:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Aug 2025, 13:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jun 2025, 10:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 May 2025, 12:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 May 2025, 12:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Apr 2025, 13:19 | 0.082 | 0.082 mg/l |
| 10 Apr 2025, 13:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2025, 12:19 | 0.42 | 0.42 mg/l |
| 7 Feb 2025, 10:27 | 0.063 | 0.063 mg/l |
| 23 Jan 2025, 10:23 | 0.12 | 0.12 mg/l |
| 2 Dec 2024, 11:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Nov 2024, 09:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Oct 2024, 11:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Sep 2024, 10:26 | 0.068 | 0.068 mg/l |
| 15 Jul 2024, 11:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jun 2024, 09:42 | 0.031 | 0.031 mg/l |
| 17 May 2024, 10:52 | 0.091 | 0.091 mg/l |
| 15 Apr 2024, 10:14 | 0.051 | 0.051 mg/l |
| 18 Mar 2024, 10:36 | 0.03 | 0.03 mg/l |
| 19 Feb 2024, 10:23 | 0.048 | 0.048 mg/l |
| 15 Jan 2024, 10:17 | 0.073 | 0.073 mg/l |
| 4 Dec 2023, 11:17 | 0.17 | 0.17 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.27 mg/l
Sampled 17 Jun 2026, 3 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Jun 2026, 15:10 | 3.27 | 3.27 mg/l |
| 27 Apr 2026, 11:11 | 3.09 | 3.09 mg/l |
| 25 Feb 2026, 10:05 | 5.88 | 5.88 mg/l |
| 9 Dec 2025, 11:54 | 3.8 | 3.8 mg/l |
| 25 Nov 2025, 10:37 | 6.69 | 6.69 mg/l |
| 8 Oct 2025, 10:51 | 3.47 | 3.47 mg/l |
| 11 Sep 2025, 11:57 | 0.776 | 0.776 mg/l |
| 28 Aug 2025, 13:36 | 3.78 | 3.78 mg/l |
| 5 Jun 2025, 10:59 | 3.67 | 3.67 mg/l |
| 9 May 2025, 12:59 | 4.48 | 4.48 mg/l |
| 9 May 2025, 12:54 | 4.48 | 4.48 mg/l |
| 23 Apr 2025, 13:19 | 2.46 | 2.46 mg/l |
| 10 Apr 2025, 13:13 | 4.79 | 4.79 mg/l |
| 7 Mar 2025, 12:19 | 5.51 | 5.51 mg/l |
| 7 Feb 2025, 10:27 | 5.98 | 5.98 mg/l |
| 23 Jan 2025, 10:23 | 5.88 | 5.88 mg/l |
| 2 Dec 2024, 11:59 | 5.39 | 5.39 mg/l |
| 29 Nov 2024, 09:00 | 5.49 | 5.49 mg/l |
| 28 Oct 2024, 11:07 | 3.59 | 3.59 mg/l |
| 23 Sep 2024, 10:26 | 1.57 | 1.57 mg/l |
| 15 Jul 2024, 11:23 | 4.28 | 4.28 mg/l |
| 21 Jun 2024, 09:42 | 4.19 | 4.19 mg/l |
| 17 May 2024, 10:52 | 2.64 | 2.64 mg/l |
| 15 Apr 2024, 10:14 | 5.46 | 5.46 mg/l |
| 18 Mar 2024, 10:36 | 5.38 | 5.38 mg/l |
| 19 Feb 2024, 10:23 | 5.18 | 5.18 mg/l |
| 15 Jan 2024, 10:17 | 6.39 | 6.39 mg/l |
| 4 Dec 2023, 11:17 | 4.49 | 4.49 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.19 mg/l
Sampled 17 Jun 2026, 3 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Jun 2026, 15:10 | 0.19 | 0.19 mg/l |
| 27 Apr 2026, 11:11 | 0.065 | 0.065 mg/l |
| 25 Feb 2026, 10:05 | 0.054 | 0.054 mg/l |
| 9 Dec 2025, 11:54 | 0.081 | 0.081 mg/l |
| 25 Nov 2025, 10:37 | 0.2 | 0.2 mg/l |
| 8 Oct 2025, 10:51 | 0.15 | 0.15 mg/l |
| 11 Sep 2025, 11:57 | 0.38 | 0.38 mg/l |
| 28 Aug 2025, 13:36 | 0.21 | 0.21 mg/l |
| 5 Jun 2025, 10:59 | 0.14 | 0.14 mg/l |
| 9 May 2025, 12:59 | 0.097 | 0.097 mg/l |
| 9 May 2025, 12:54 | 0.094 | 0.094 mg/l |
| 23 Apr 2025, 13:19 | 0.21 | 0.21 mg/l |
| 10 Apr 2025, 13:13 | 0.082 | 0.082 mg/l |
| 7 Mar 2025, 12:19 | 0.14 | 0.14 mg/l |
| 7 Feb 2025, 10:27 | 0.077 | 0.077 mg/l |
| 23 Jan 2025, 10:23 | 0.19 | 0.19 mg/l |
| 2 Dec 2024, 11:59 | 0.094 | 0.094 mg/l |
| 29 Nov 2024, 09:00 | 0.08 | 0.08 mg/l |
| 28 Oct 2024, 11:07 | 0.11 | 0.11 mg/l |
| 23 Sep 2024, 10:26 | 0.46 | 0.46 mg/l |
| 15 Jul 2024, 11:23 | 0.099 | 0.099 mg/l |
| 21 Jun 2024, 09:42 | 0.17 | 0.17 mg/l |
| 17 May 2024, 10:52 | 0.21 | 0.21 mg/l |
| 15 Apr 2024, 10:14 | 0.12 | 0.12 mg/l |
| 18 Mar 2024, 10:36 | 0.18 | 0.18 mg/l |
| 19 Feb 2024, 10:23 | 0.07 | 0.07 mg/l |
| 15 Jan 2024, 10:17 | 0.49 | 0.49 mg/l |
| 4 Dec 2023, 11:17 | 0.36 | 0.36 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
508 µS/cm
Sampled 17 Jun 2026, 3 months ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Jun 2026, 15:10 | 508 | 508 µS/cm |
| 27 Apr 2026, 11:11 | 457 | 457 µS/cm |
| 25 Feb 2026, 10:05 | 419 | 419 µS/cm |
| 9 Dec 2025, 11:54 | 209 | 209 µS/cm |
| 25 Nov 2025, 10:37 | 316 | 316 µS/cm |
| 8 Oct 2025, 10:51 | 498 | 498 µS/cm |
| 11 Sep 2025, 11:57 | 283 | 283 µS/cm |
| 28 Aug 2025, 13:36 | 339 | 339 µS/cm |
| 5 Jun 2025, 10:59 | 461 | 461 µS/cm |
| 9 May 2025, 12:59 | 514 | 514 µS/cm |
| 9 May 2025, 12:54 | 514 | 514 µS/cm |
| 23 Apr 2025, 13:19 | 324 | 324 µS/cm |
| 10 Apr 2025, 13:13 | 501 | 501 µS/cm |
| 7 Mar 2025, 12:19 | 457 | 457 µS/cm |
| 7 Feb 2025, 10:27 | 421 | 421 µS/cm |
| 23 Jan 2025, 10:23 | 629 | 629 µS/cm |
| 2 Dec 2024, 11:59 | 308 | 308 µS/cm |
| 29 Nov 2024, 09:00 | 326 | 326 µS/cm |
| 28 Oct 2024, 11:07 | 355 | 355 µS/cm |
| 23 Sep 2024, 10:26 | 138 | 138 µS/cm |
| 15 Jul 2024, 11:23 | 508 | 508 µS/cm |
| 21 Jun 2024, 09:42 | 508 | 508 µS/cm |
| 17 May 2024, 10:52 | 431 | 431 µS/cm |
| 15 Apr 2024, 10:14 | 390 | 390 µS/cm |
| 18 Mar 2024, 10:36 | 360 | 360 µS/cm |
| 19 Feb 2024, 10:23 | 338 | 338 µS/cm |
| 15 Jan 2024, 10:17 | 472 | 472 µS/cm |
| 4 Dec 2023, 11:17 | 289 | 289 µS/cm |
Everything measured here
61 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 61 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 28 | Dec 2023 – Jun 2026 | 81% 17 Jun 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Dec 2023 – Jun 2026 | 8.06 mg/l 17 Jun 2026 |
| Temperature of Water 0076 | River water | 28 | Dec 2023 – Jun 2026 | 15.5 °C 17 Jun 2026 |
| pH 0061 | River water | 28 | Dec 2023 – Jun 2026 | 7.94 17 Jun 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Dec 2023 – Jun 2026 | 0.039 mg/l 17 Jun 2026 |
| Nitrate as N 0117 | River water | 28 | Dec 2023 – Jun 2026 | 3.27 mg/l 17 Jun 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Dec 2023 – Jun 2026 | 0.19 mg/l 17 Jun 2026 |
| Conductivity at 25 C 0077 | River water | 28 | Dec 2023 – Jun 2026 | 508 µS/cm 17 Jun 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | Apr 2024 – Mar 2025 | below 0.002 µg/l 7 Mar 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | Apr 2024 – Mar 2025 | below 0.004 µg/l 7 Mar 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 3 | Apr 2024 – Mar 2025 | below 0.005 µg/l 7 Mar 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | Apr 2024 – Mar 2025 | 0.0051 µg/l 7 Mar 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Dec 2023 – Jun 2026 | 190 mg/l 17 Jun 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Dec 2023 – Jun 2026 | 0.00093 mg/l 17 Jun 2026 |
| BOD : 5 Day ATU 0085 | River water | 20 | Feb 2024 – Feb 2026 | 2 mg/l 25 Feb 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | Apr 2024 – Mar 2025 | below 0.002 µg/l 7 Mar 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | Apr 2024 – Mar 2025 | below 0.002 µg/l 7 Mar 2025 |
| Nitrite as N 0118 | River water | 28 | Dec 2023 – Jun 2026 | 0.03 mg/l 17 Jun 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 28 | Dec 2023 – Jun 2026 | 3.3 mg/l 17 Jun 2026 |
| No flow /No sample 7668 | River water | 5 | Aug 2024 – Sep 2026 | No flow/discharge at sampling point 21 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| Perfluorobutanoic acid 2995 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | Apr 2024 – Mar 2025 | below 0.002 µg/l 7 Mar 2025 |
| Perfluorodecanoic acid 8892 | River water | 3 | Apr 2024 – Mar 2025 | below 0.002 µg/l 7 Mar 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | Apr 2024 – Mar 2025 | below 0.005 µg/l 7 Mar 2025 |
| Perfluorododecanoic acid 8894 | River water | 3 | Apr 2024 – Mar 2025 | below 0.002 µg/l 7 Mar 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluoroheptanoic acid 8889 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorohexanoic acid 8888 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorononanoic acid 8891 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | Apr 2024 – Mar 2025 | below 0.002 µg/l 7 Mar 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluorooctanoic acid 8890 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 7 Mar 2025 |
| Perfluoropentanoic acid 8887 | River water | 3 | Apr 2024 – Mar 2025 | below 0.001 µg/l 7 Mar 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | Apr 2024 – Mar 2025 | below 0.006 µg/l 7 Mar 2025 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Apr 2024 – Mar 2025 | below 0.005 µg/l 7 Mar 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | Apr 2024 – Mar 2025 | below 0.004 µg/l 7 Mar 2025 |
| Perfluoroundecanoic acid 8893 | River water | 3 | Apr 2024 – Mar 2025 | below 0.002 µg/l 7 Mar 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.