St Austell River at Pentewan Bridge
EA name: ST. AUSTELL RIVER AT PENTEWAN BRIDGE
Environment Agency sampling point SW-81810104 · 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, 15:2559 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 72 since 6 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 201749, 47253As published, to the nearest 1 m. Open in a map
- River, by its own name
- St Austell
- River, by the map
- Not placedTwo watercourses within reach (2 m and 72 m) and no name to choose by. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Planned investigation (local monitoring) (35 samples)
Monitoring (UK govt policy - not GQA or RE) (24 samples)
Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
100%
Sampled 3 Aug 2026, 59 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 15:25 | 100 | 100% |
| 14 Jul 2026, 14:24 | 107.2 | 107.2% |
| 9 Jun 2026, 12:23 | 102.8 | 102.8% |
| 8 May 2026, 12:56 | 102.8 | 102.8% |
| 24 Apr 2026, 09:42 | 98.8 | 98.8% |
| 19 Mar 2026, 12:09 | 102.3 | 102.3% |
| 5 Feb 2026, 10:37 | 91.5 | 91.5% |
| 21 Jan 2026, 13:24 | 91.9 | 91.9% |
| 3 Dec 2025, 12:06 | 92.6 | 92.6% |
| 7 Nov 2025, 10:32 | 92.8 | 92.8% |
| 21 Oct 2025, 11:07 | 95.4 | 95.4% |
| 4 Sep 2025, 10:39 | 94.5 | 94.5% |
| 12 Aug 2025, 11:06 | 105.3 | 105.3% |
| 15 Jul 2025, 10:09 | 102.2 | 102.2% |
| 26 Jun 2025, 12:24 | 105.6 | 105.6% |
| 13 May 2025, 11:02 | 102.5 | 102.5% |
| 16 Apr 2025, 10:40 | 95.4 | 95.4% |
| 21 Mar 2025, 12:07 | 99.1 | 99.1% |
| 26 Feb 2025, 10:20 | 93.1 | 93.1% |
| 20 Jan 2025, 11:39 | 94.8 | 94.8% |
| 10 Dec 2024, 11:47 | 97.7 | 97.7% |
| 26 Nov 2024, 12:40 | 98 | 98% |
| 16 Oct 2024, 10:51 | 90.7 | 90.7% |
| 17 Sep 2024, 13:55 | 101.1 | 101.1% |
| 23 Aug 2024, 14:17 | 104.1 | 104.1% |
| 31 Jul 2024, 13:32 | 100 | 100% |
| 11 Apr 2024, 13:07 | 96 | 96% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.02 mg/l
Sampled 3 Aug 2026, 59 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 15:25 | 9.02 | 9.02 mg/l |
| 14 Jul 2026, 14:24 | 9.39 | 9.39 mg/l |
| 9 Jun 2026, 12:23 | 10.4 | 10.4 mg/l |
| 8 May 2026, 12:56 | 10.3 | 10.3 mg/l |
| 24 Apr 2026, 09:42 | 10.8 | 10.8 mg/l |
| 19 Mar 2026, 12:09 | 11.1 | 11.1 mg/l |
| 5 Feb 2026, 10:37 | 10.2 | 10.2 mg/l |
| 21 Jan 2026, 13:24 | 10.4 | 10.4 mg/l |
| 3 Dec 2025, 12:06 | 10.6 | 10.6 mg/l |
| 7 Nov 2025, 10:32 | 9.71 | 9.71 mg/l |
| 21 Oct 2025, 11:07 | 9.98 | 9.98 mg/l |
| 4 Sep 2025, 10:39 | 9.53 | 9.53 mg/l |
| 12 Aug 2025, 11:06 | 10.2 | 10.2 mg/l |
| 15 Jul 2025, 10:09 | 10.2 | 10.2 mg/l |
| 26 Jun 2025, 12:24 | 9.97 | 9.97 mg/l |
| 13 May 2025, 11:02 | 10.5 | 10.5 mg/l |
| 16 Apr 2025, 10:40 | 10.7 | 10.7 mg/l |
| 21 Mar 2025, 12:07 | 10.9 | 10.9 mg/l |
| 26 Feb 2025, 10:20 | 10.6 | 10.6 mg/l |
| 20 Jan 2025, 11:39 | 10.8 | 10.8 mg/l |
| 10 Dec 2024, 11:47 | 11.1 | 11.1 mg/l |
| 26 Nov 2024, 12:40 | 10.9 | 10.9 mg/l |
| 16 Oct 2024, 10:51 | 9.3 | 9.3 mg/l |
| 17 Sep 2024, 13:55 | 9.95 | 9.95 mg/l |
| 23 Aug 2024, 14:17 | 9.97 | 9.97 mg/l |
| 31 Jul 2024, 13:32 | 9.07 | 9.07 mg/l |
Water temperature
code 0076 · °C
20.3 °C
Sampled 3 Aug 2026, 59 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 15:25 | 20.3 | 20.3 °C |
| 14 Jul 2026, 14:24 | 21.8 | 21.8 °C |
| 9 Jun 2026, 12:23 | 14.9 | 14.9 °C |
| 8 May 2026, 12:56 | 15.1 | 15.1 °C |
| 24 Apr 2026, 09:42 | 11.1 | 11.1 °C |
| 19 Mar 2026, 12:09 | 11.7 | 11.7 °C |
| 5 Feb 2026, 10:37 | 10.3 | 10.3 °C |
| 21 Jan 2026, 13:24 | 9.9 | 9.9 °C |
| 3 Dec 2025, 12:06 | 9.4 | 9.4 °C |
| 7 Nov 2025, 10:32 | 13.2 | 13.2 °C |
| 21 Oct 2025, 11:07 | 13.2 | 13.2 °C |
| 4 Sep 2025, 10:39 | 14.9 | 14.9 °C |
| 12 Aug 2025, 11:06 | 17 | 17 °C |
| 15 Jul 2025, 10:09 | 15.5 | 15.5 °C |
| 26 Jun 2025, 12:24 | 18 | 18 °C |
| 13 May 2025, 11:02 | 14.3 | 14.3 °C |
| 16 Apr 2025, 10:40 | 10 | 10 °C |
| 21 Mar 2025, 12:07 | 11.1 | 11.1 °C |
| 26 Feb 2025, 10:20 | 9.7 | 9.7 °C |
| 20 Jan 2025, 11:39 | 9.6 | 9.6 °C |
| 10 Dec 2024, 11:47 | 9.5 | 9.5 °C |
| 26 Nov 2024, 12:40 | 10.7 | 10.7 °C |
| 16 Oct 2024, 10:51 | 14.1 | 14.1 °C |
| 17 Sep 2024, 13:55 | 16 | 16 °C |
| 23 Aug 2024, 14:17 | 17.3 | 17.3 °C |
| 31 Jul 2024, 13:32 | 20 | 20 °C |
| 11 Apr 2024, 13:07 | 12.5 | 12.5 °C |
pH
code 0061
7.38
Sampled 3 Aug 2026, 59 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 15:25 | 7.38 | 7.38 |
| 14 Jul 2026, 14:24 | 7.54 | 7.54 |
| 9 Jun 2026, 12:23 | 7.37 | 7.37 |
| 8 May 2026, 12:56 | 7.62 | 7.62 |
| 24 Apr 2026, 09:42 | 7.83 | 7.83 |
| 19 Mar 2026, 12:09 | 7.51 | 7.51 |
| 5 Feb 2026, 10:37 | 7.03 | 7.03 |
| 21 Jan 2026, 13:24 | 6.99 | 6.99 |
| 3 Dec 2025, 12:06 | 7.16 | 7.16 |
| 7 Nov 2025, 10:32 | 7.35 | 7.35 |
| 21 Oct 2025, 11:07 | 7.16 | 7.16 |
| 4 Sep 2025, 10:39 | 7.43 | 7.43 |
| 12 Aug 2025, 11:06 | 7.57 | 7.57 |
| 15 Jul 2025, 10:09 | 7.5 | 7.5 |
| 26 Jun 2025, 12:24 | 7.5 | 7.5 |
| 13 May 2025, 11:02 | 7.39 | 7.39 |
| 16 Apr 2025, 10:40 | 7.31 | 7.31 |
| 21 Mar 2025, 12:07 | 7.31 | 7.31 |
| 26 Feb 2025, 10:20 | 7.16 | 7.16 |
| 20 Jan 2025, 11:39 | 7.16 | 7.16 |
| 10 Dec 2024, 11:47 | 7.3 | 7.3 |
| 26 Nov 2024, 12:40 | 7.2 | 7.2 |
| 16 Oct 2024, 10:51 | 7.02 | 7.02 |
| 17 Sep 2024, 13:55 | 7.34 | 7.34 |
| 23 Aug 2024, 14:17 | 7.91 | 7.91 |
| 31 Jul 2024, 13:32 | 7.7 | 7.7 |
| 11 Apr 2024, 13:07 | 7.11 | 7.11 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 3 Aug 2026, 59 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 15:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jul 2026, 14:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jun 2026, 12:23 | 0.074 | 0.074 mg/l |
| 8 May 2026, 12:56 | 0.051 | 0.051 mg/l |
| 24 Apr 2026, 09:42 | 0.043 | 0.043 mg/l |
| 19 Mar 2026, 12:09 | 0.036 | 0.036 mg/l |
| 5 Feb 2026, 10:37 | 0.26 | 0.26 mg/l |
| 21 Jan 2026, 13:24 | 0.19 | 0.19 mg/l |
| 3 Dec 2025, 12:06 | 0.26 | 0.26 mg/l |
| 7 Nov 2025, 10:32 | 0.044 | 0.044 mg/l |
| 21 Oct 2025, 11:07 | 0.049 | 0.049 mg/l |
| 4 Sep 2025, 10:39 | 0.064 | 0.064 mg/l |
| 12 Aug 2025, 11:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2025, 10:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jun 2025, 12:24 | 0.04 | 0.04 mg/l |
| 13 May 2025, 11:02 | 0.037 | 0.037 mg/l |
| 16 Apr 2025, 10:40 | 0.064 | 0.064 mg/l |
| 21 Mar 2025, 12:07 | 0.17 | 0.17 mg/l |
| 26 Feb 2025, 10:20 | 0.28 | 0.28 mg/l |
| 20 Jan 2025, 11:39 | 0.44 | 0.44 mg/l |
| 10 Dec 2024, 11:47 | 0.16 | 0.16 mg/l |
| 26 Nov 2024, 12:40 | 0.24 | 0.24 mg/l |
| 16 Oct 2024, 10:51 | 0.17 | 0.17 mg/l |
| 17 Sep 2024, 13:55 | 0.6 | 0.6 mg/l |
| 23 Aug 2024, 14:17 | 0.037 | 0.037 mg/l |
| 31 Jul 2024, 13:32 | 0.038 | 0.038 mg/l |
| 24 Jun 2024, 14:21 | 0.065 | 0.065 mg/l |
| 11 Apr 2024, 13:07 | 0.19 | 0.19 mg/l |
| 1 Mar 2024, 12:07 | 0.22 | 0.22 mg/l |
| 7 Feb 2024, 15:00 | 0.097 | 0.097 mg/l |
| 18 Jan 2024, 10:22 | 0.085 | 0.085 mg/l |
| 15 Dec 2023, 12:09 | 0.21 | 0.21 mg/l |
| 5 Dec 2023, 10:07 | 0.12 | 0.12 mg/l |
| 8 Nov 2023, 12:38 | 0.24 | 0.24 mg/l |
| 6 Oct 2023, 12:17 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.99 mg/l
Sampled 3 Aug 2026, 59 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 15:25 | 9.99 | 9.99 mg/l |
| 14 Jul 2026, 14:24 | 7.98 | 7.98 mg/l |
| 9 Jun 2026, 12:23 | 5.49 | 5.49 mg/l |
| 8 May 2026, 12:56 | 4.99 | 4.99 mg/l |
| 24 Apr 2026, 09:42 | 4.2 | 4.2 mg/l |
| 19 Mar 2026, 12:09 | 3.39 | 3.39 mg/l |
| 5 Feb 2026, 10:37 | 3.09 | 3.09 mg/l |
| 21 Jan 2026, 13:24 | 2.49 | 2.49 mg/l |
| 3 Dec 2025, 12:06 | 3.48 | 3.48 mg/l |
| 7 Nov 2025, 10:32 | 3.89 | 3.89 mg/l |
| 21 Oct 2025, 11:07 | 4.39 | 4.39 mg/l |
| 4 Sep 2025, 10:39 | 3.59 | 3.59 mg/l |
| 12 Aug 2025, 11:06 | 4.68 | 4.68 mg/l |
| 15 Jul 2025, 10:09 | 5.79 | 5.79 mg/l |
| 26 Jun 2025, 12:24 | 6.08 | 6.08 mg/l |
| 13 May 2025, 11:02 | 5.19 | 5.19 mg/l |
| 16 Apr 2025, 10:40 | 2.59 | 2.59 mg/l |
| 21 Mar 2025, 12:07 | 5.18 | 5.18 mg/l |
| 26 Feb 2025, 10:20 | 3.09 | 3.09 mg/l |
| 20 Jan 2025, 11:39 | 3.48 | 3.48 mg/l |
| 10 Dec 2024, 11:47 | 3.88 | 3.88 mg/l |
| 26 Nov 2024, 12:40 | 3.37 | 3.37 mg/l |
| 16 Oct 2024, 10:51 | 2.59 | 2.59 mg/l |
| 17 Sep 2024, 13:55 | 7.59 | 7.59 mg/l |
| 23 Aug 2024, 14:17 | 7.79 | 7.79 mg/l |
| 31 Jul 2024, 13:32 | 5.79 | 5.79 mg/l |
| 24 Jun 2024, 14:21 | 6.18 | 6.18 mg/l |
| 1 Mar 2024, 12:07 | 2.99 | 2.99 mg/l |
| 7 Feb 2024, 15:00 | 3.59 | 3.59 mg/l |
| 18 Jan 2024, 10:22 | 3.89 | 3.89 mg/l |
| 15 Dec 2023, 12:09 | 3.48 | 3.48 mg/l |
| 5 Dec 2023, 10:07 | 3.29 | 3.29 mg/l |
| 8 Nov 2023, 12:38 | 3.26 | 3.26 mg/l |
| 6 Oct 2023, 12:17 | 5.89 | 5.89 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.18 mg/l
Sampled 3 Aug 2026, 59 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 15:25 | 0.18 | 0.18 mg/l |
| 14 Jul 2026, 14:24 | 0.19 | 0.19 mg/l |
| 9 Jun 2026, 12:23 | 0.074 | 0.074 mg/l |
| 8 May 2026, 12:56 | 0.05 | 0.05 mg/l |
| 24 Apr 2026, 09:42 | 0.039 | 0.039 mg/l |
| 19 Mar 2026, 12:09 | 0.058 | 0.058 mg/l |
| 5 Feb 2026, 10:37 | 0.072 | 0.072 mg/l |
| 21 Jan 2026, 13:24 | 0.062 | 0.062 mg/l |
| 3 Dec 2025, 12:06 | 0.066 | 0.066 mg/l |
| 7 Nov 2025, 10:32 | 0.036 | 0.036 mg/l |
| 21 Oct 2025, 11:07 | 0.057 | 0.057 mg/l |
| 4 Sep 2025, 10:39 | 0.069 | 0.069 mg/l |
| 12 Aug 2025, 11:06 | 0.077 | 0.077 mg/l |
| 15 Jul 2025, 10:09 | 0.1 | 0.1 mg/l |
| 26 Jun 2025, 12:24 | 0.082 | 0.082 mg/l |
| 13 May 2025, 11:02 | 0.12 | 0.12 mg/l |
| 16 Apr 2025, 10:40 | 0.036 | 0.036 mg/l |
| 21 Mar 2025, 12:07 | 0.077 | 0.077 mg/l |
| 26 Feb 2025, 10:20 | 0.076 | 0.076 mg/l |
| 20 Jan 2025, 11:39 | 0.075 | 0.075 mg/l |
| 10 Dec 2024, 11:47 | 0.039 | 0.039 mg/l |
| 26 Nov 2024, 12:40 | 0.052 | 0.052 mg/l |
| 16 Oct 2024, 10:51 | 0.058 | 0.058 mg/l |
| 17 Sep 2024, 13:55 | 0.15 | 0.15 mg/l |
| 23 Aug 2024, 14:17 | 0.18 | 0.18 mg/l |
| 31 Jul 2024, 13:32 | 0.16 | 0.16 mg/l |
| 24 Jun 2024, 14:21 | 0.14 | 0.14 mg/l |
| 11 Apr 2024, 13:07 | 0.059 | 0.059 mg/l |
| 1 Mar 2024, 12:07 | 0.053 | 0.053 mg/l |
| 7 Feb 2024, 15:00 | 0.081 | 0.081 mg/l |
| 18 Jan 2024, 10:22 | 0.053 | 0.053 mg/l |
| 15 Dec 2023, 12:09 | 0.026 | 0.026 mg/l |
| 5 Dec 2023, 10:07 | 0.043 | 0.043 mg/l |
| 8 Nov 2023, 12:38 | 0.047 | 0.047 mg/l |
| 6 Oct 2023, 12:17 | 0.057 | 0.057 mg/l |
Turbidity
code 6396 · NTU
15 NTU
Sampled 11 Apr 2024, 2.5 years ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Apr 2024, 13:07 | 15 | 15 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
621 µS/cm
Sampled 3 Aug 2026, 59 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 15:25 | 621 | 621 µS/cm |
| 14 Jul 2026, 14:24 | 315 | 315 µS/cm |
| 9 Jun 2026, 12:23 | 262 | 262 µS/cm |
| 8 May 2026, 12:56 | 287 | 287 µS/cm |
| 24 Apr 2026, 09:42 | 256 | 256 µS/cm |
| 19 Mar 2026, 12:09 | 229 | 229 µS/cm |
| 5 Feb 2026, 10:37 | 324 | 324 µS/cm |
| 21 Jan 2026, 13:24 | 233 | 233 µS/cm |
| 3 Dec 2025, 12:06 | 231 | 231 µS/cm |
| 7 Nov 2025, 10:32 | 537 | 537 µS/cm |
| 21 Oct 2025, 11:07 | 341 | 341 µS/cm |
| 4 Sep 2025, 10:39 | 226 | 226 µS/cm |
| 12 Aug 2025, 11:06 | 467 | 467 µS/cm |
| 15 Jul 2025, 10:09 | 479 | 479 µS/cm |
| 26 Jun 2025, 12:24 | 362 | 362 µS/cm |
| 13 May 2025, 11:02 | 316 | 316 µS/cm |
| 16 Apr 2025, 10:40 | 207 | 207 µS/cm |
| 21 Mar 2025, 12:07 | 345 | 345 µS/cm |
| 26 Feb 2025, 10:20 | 194 | 194 µS/cm |
| 20 Jan 2025, 11:39 | 232 | 232 µS/cm |
| 10 Dec 2024, 11:47 | 230 | 230 µS/cm |
| 26 Nov 2024, 12:40 | 222 | 222 µS/cm |
| 16 Oct 2024, 10:51 | 209 | 209 µS/cm |
| 17 Sep 2024, 13:55 | 307 | 307 µS/cm |
| 23 Aug 2024, 14:17 | 1731 | 1731 µS/cm |
| 31 Jul 2024, 13:32 | 277 | 277 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
380 per 100 ml
Sampled 20 Sep 2024, 2 years ago · 17 results banked
Also measured in number per hundred millilitres on another sample material (2IZZ): 19 results, kept apart (see the table).
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Sep 2024, 10:42 | 380 | 380 per 100 ml |
| 10 Sep 2024, 10:10 | 560 | 560 per 100 ml |
| 3 Sep 2024, 10:35 | 270 | 270 per 100 ml |
| 26 Aug 2024, 12:25 | 290 | 290 per 100 ml |
| 23 Aug 2024, 14:08 | 820 | 820 per 100 ml |
| 13 Aug 2024, 10:15 | 450 | 450 per 100 ml |
| 8 Aug 2024, 10:20 | 3200 | 3200 per 100 ml |
| 29 Jul 2024, 10:14 | 250 | 250 per 100 ml |
| 24 Jul 2024, 14:00 | 320 | 320 per 100 ml |
| 21 Jul 2024, 10:10 | 700 | 700 per 100 ml |
| 8 Jul 2024, 17:20 | 8900 | 8900 per 100 ml |
| 3 Jul 2024, 10:15 | 490 | 490 per 100 ml |
| 24 Jun 2024, 14:22 | 1000 | 1000 per 100 ml |
| 17 Jun 2024, 15:28 | 5500 | 5500 per 100 ml |
| 11 Jun 2024, 12:37 | 25000 | 25000 per 100 ml |
| 4 Jun 2024, 10:41 | 220 | 220 per 100 ml |
| 11 Apr 2024, 13:07 | 14000 | 14000 per 100 ml |
Everything measured here
89 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 93 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 27 | Apr 2024 – Aug 2026 | 100% 3 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 26 | Jul 2024 – Aug 2026 | 9.02 mg/l 3 Aug 2026 |
| Temperature of Water 0076 | River water | 27 | Apr 2024 – Aug 2026 | 20.3 °C 3 Aug 2026 |
| pH 0061 | River water | 27 | Apr 2024 – Aug 2026 | 7.38 3 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 35 | Oct 2023 – Aug 2026 | below 0.03 mg/l 3 Aug 2026 |
| Nitrate as N 0117 | River water | 34 | Oct 2023 – Aug 2026 | 9.99 mg/l 3 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 35 | Oct 2023 – Aug 2026 | 0.18 mg/l 3 Aug 2026 |
| Turbidity 6396 | River water | 1 | Apr 2024 – Apr 2024 | 15 NTU 11 Apr 2024 |
| Conductivity at 25 C 0077 | River water | 26 | Jul 2024 – Aug 2026 | 621 µS/cm 3 Aug 2026 |
| Escherichia coli : Confirmed : MF 2348 | River water | 17 | Apr 2024 – Sep 2024 | 380 per 100 ml 20 Sep 2024 |
| Escherichia coli : Confirmed : MF 2348 | Sea water | 19 | Dec 2023 – Apr 2024 | 1100 per 100 ml 23 Apr 2024 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 16 Oct 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Oct 2024 – Oct 2024 | below 0.004 µg/l 16 Oct 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Oct 2024 – Oct 2024 | below 0.005 µg/l 16 Oct 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 26 | Jun 2024 – Aug 2026 | 23 mg/l 3 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Apr 2024 – Aug 2026 | below 0.00029 mg/l 3 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Apr 2024 – May 2026 | 1.5 mg/l 8 May 2026 |
| Cadmium 0108 | River water | 36 | Oct 2023 – Aug 2026 | 0.034 µg/l 3 Aug 2026 |
| Chloride 0172 | River water | 1 | Apr 2024 – Apr 2024 | 35 mg/l 11 Apr 2024 |
| Copper 6452 | River water | 36 | Oct 2023 – Aug 2026 | 3.3 µg/l 3 Aug 2026 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 16 | Jun 2024 – Sep 2024 | 260 colony forming units / 100ml 20 Sep 2024 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 5 | Apr 2026 – Aug 2026 | 1 text result 3 Aug 2026 |
| HCH -gamma :- {Lindane} 0499 | River water | 36 | Oct 2023 – Aug 2026 | below 0.003 µg/l 3 Aug 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| LCMS Screen : Semi Quantitative 7299 | River water | 1 | Jun 2026 – Jun 2026 | 1 text result 9 Jun 2026 |
| Lead 0050 | River water | 36 | Oct 2023 – Aug 2026 | 0.32 µg/l 3 Aug 2026 |
| Mercury 0105 | River water | 36 | Oct 2023 – Aug 2026 | below 0.01 µg/l 3 Aug 2026 |
| MST Filtration 4926 | River water | 17 | Apr 2024 – Sep 2024 | DNA Stored 20 Sep 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 16 Oct 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 16 Oct 2024 |
| National Grid Reference : Whole : Field report 7434 | River water | 1 | Apr 2024 – Apr 2024 | 1 unitless value 11 Apr 2024 |
| Nickel 6462 | River water | 31 | Feb 2024 – Aug 2026 | 1.6 µg/l 3 Aug 2026 |
| Nitrite as N 0118 | River water | 34 | Oct 2023 – Aug 2026 | 0.012 mg/l 3 Aug 2026 |
| Nitrogen, Total as N 9686 | River water | 29 | Oct 2023 – Aug 2026 | 11 mg/l 3 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 35 | Oct 2023 – Aug 2026 | 10 mg/l 3 Aug 2026 |
| PCB - 028 9768 | River water | 35 | Oct 2023 – Aug 2026 | below 0.001 µg/l 3 Aug 2026 |
| PCB - 052 9769 | River water | 34 | Oct 2023 – Aug 2026 | below 0.001 µg/l 3 Aug 2026 |
| PCB - 101 9770 | River water | 36 | Oct 2023 – Aug 2026 | below 0.001 µg/l 3 Aug 2026 |
| PCB - 118 9771 | River water | 36 | Oct 2023 – Aug 2026 | below 0.001 µg/l 3 Aug 2026 |
| PCB - 138 9772 | River water | 36 | Oct 2023 – Aug 2026 | below 0.001 µg/l 3 Aug 2026 |
| PCB - 153 9773 | River water | 36 | Oct 2023 – Aug 2026 | below 0.001 µg/l 3 Aug 2026 |
| PCB - 180 9774 | River water | 36 | Oct 2023 – Aug 2026 | below 0.002 µg/l 3 Aug 2026 |
| PCB : Total 0753 | River water | 34 | Oct 2023 – Aug 2026 | below 0.008 µg/l 3 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Oct 2024 – Oct 2024 | 0.0012 µg/l 16 Oct 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 16 Oct 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 16 Oct 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Oct 2024 – Oct 2024 | below 0.005 µg/l 16 Oct 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 16 Oct 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Oct 2024 – Oct 2024 | 0.00097 µg/l 16 Oct 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 16 Oct 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 16 Oct 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Oct 2024 – Oct 2024 | 0.00077 µg/l 16 Oct 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 16 Oct 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Oct 2024 – Oct 2024 | 0.0012 µg/l 16 Oct 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Oct 2024 – Oct 2024 | below 0.006 µg/l 16 Oct 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Oct 2024 – Oct 2024 | below 0.005 µg/l 16 Oct 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Oct 2024 – Oct 2024 | below 0.004 µg/l 16 Oct 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 16 Oct 2024 |
| Phosphorus, Total as P 0348 | River water | 29 | Oct 2023 – Aug 2026 | 0.21 mg/l 3 Aug 2026 |
| Salinity : In Situ 7608 | River water | 1 | Apr 2024 – Apr 2024 | 0.11 parts per thousand 11 Apr 2024 |
| Solids, Suspended at 105 C 0135 | River water | 32 | Oct 2023 – Aug 2026 | below 3 mg/l 3 Aug 2026 |
| Volume of Sample Filtered 4865 | River water | 17 | Apr 2024 – Sep 2024 | 890 millilitre 20 Sep 2024 |
| Zinc 6455 | River water | 36 | Oct 2023 – Aug 2026 | 9.7 µg/l 3 Aug 2026 |
| Enterococci: Intestinal: Confirmed: MF 3723 | Sea water | 19 | Dec 2023 – Apr 2024 | 600 colony forming units / 100ml 23 Apr 2024 |
| Enterococci: Intestinal: Presumptive: MF 3722 | Sea water | 19 | Dec 2023 – Apr 2024 | 2000 colony forming units / 100ml 23 Apr 2024 |
| MST Filtration 4926 | Sea water | 19 | Dec 2023 – Apr 2024 | DNA Stored 23 Apr 2024 |
| Volume of Sample Filtered 4865 | Sea water | 19 | Dec 2023 – Apr 2024 | 940 millilitre 23 Apr 2024 |
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.