River Hodder Down Stream of Phynis Brook
EA name: RIVER HODDER DOWN STREAM OF PHYNIS BROOK
Environment Agency sampling point NW-88003444 · 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 May 2026, 13:224 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 32 since 2 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 371730, 453556As published, to the nearest 1 m. Open in a map
- River, by its own name
- Hodder
- River, by the map
- River HodderPlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Hodder Place On the River Hodder · 28 km along the river
- Why it was sampled
- Monitoring (national agency policy) (26 samples)
Environmental monitoring statutory (EU directives) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
107.7%
Sampled 21 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 13:22 | 107.7 | 107.7% |
| 21 Apr 2026, 11:54 | 116.4 | 116.4% |
| 15 Apr 2026, 13:22 | 105.5 | 105.5% |
| 10 Mar 2026, 11:46 | 106.9 | 106.9% |
| 6 Feb 2026, 11:34 | 102.6 | 102.6% |
| 20 Jan 2026, 09:37 | 99.9 | 99.9% |
| 5 Dec 2025, 10:54 | 97.1 | 97.1% |
| 6 Nov 2025, 10:56 | 95.5 | 95.5% |
| 6 Oct 2025, 09:18 | 98.1 | 98.1% |
| 17 Sep 2025, 11:49 | 101.2 | 101.2% |
| 6 Aug 2025, 11:11 | 106.2 | 106.2% |
| 15 Jul 2025, 11:45 | 99.7 | 99.7% |
| 9 Jun 2025, 10:35 | 100.8 | 100.8% |
| 12 May 2025, 10:21 | 113.7 | 113.7% |
| 4 Apr 2025, 09:55 | 109.2 | 109.2% |
| 7 Mar 2025, 10:27 | 107.2 | 107.2% |
| 17 Feb 2025, 12:37 | 107 | 107% |
| 30 Jan 2025, 11:31 | 100.2 | 100.2% |
| 3 Dec 2024, 11:10 | 105.1 | 105.1% |
| 18 Nov 2024, 11:46 | 108.3 | 108.3% |
| 18 Oct 2024, 09:56 | 99.6 | 99.6% |
| 16 Sep 2024, 10:37 | 96.6 | 96.6% |
| 21 Aug 2024, 12:43 | 103.7 | 103.7% |
| 17 Jul 2024, 10:23 | 104.6 | 104.6% |
| 17 Jun 2024, 10:22 | 101.6 | 101.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.4 mg/l
Sampled 21 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 13:22 | 11.4 | 11.4 mg/l |
| 21 Apr 2026, 11:54 | 13.1 | 13.1 mg/l |
| 15 Apr 2026, 13:22 | 11.5 | 11.5 mg/l |
| 10 Mar 2026, 11:46 | 12.9 | 12.9 mg/l |
| 6 Feb 2026, 11:34 | 13.4 | 13.4 mg/l |
| 20 Jan 2026, 09:37 | 12.6 | 12.6 mg/l |
| 5 Dec 2025, 10:54 | 12 | 12 mg/l |
| 6 Nov 2025, 10:56 | 10.7 | 10.7 mg/l |
| 6 Oct 2025, 09:18 | 10.6 | 10.6 mg/l |
| 17 Sep 2025, 11:49 | 10.6 | 10.6 mg/l |
| 6 Aug 2025, 11:11 | 10.4 | 10.4 mg/l |
| 15 Jul 2025, 11:45 | 9.92 | 9.92 mg/l |
| 9 Jun 2025, 10:35 | 11 | 11 mg/l |
| 12 May 2025, 10:21 | 12.1 | 12.1 mg/l |
| 4 Apr 2025, 09:55 | 12.7 | 12.7 mg/l |
| 7 Mar 2025, 10:27 | 12.9 | 12.9 mg/l |
| 17 Feb 2025, 12:37 | 14.2 | 14.2 mg/l |
| 30 Jan 2025, 11:31 | 13.2 | 13.2 mg/l |
| 3 Dec 2024, 11:10 | 13.1 | 13.1 mg/l |
| 18 Nov 2024, 11:46 | 14 | 14 mg/l |
| 18 Oct 2024, 09:56 | 11 | 11 mg/l |
| 16 Sep 2024, 10:37 | 10.4 | 10.4 mg/l |
| 21 Aug 2024, 12:43 | 10.7 | 10.7 mg/l |
| 17 Jul 2024, 10:23 | 11.1 | 11.1 mg/l |
| 17 Jun 2024, 10:22 | 11.2 | 11.2 mg/l |
Water temperature
code 0076 · °C
12.5 °C
Sampled 21 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 13:22 | 12.5 | 12.5 °C |
| 21 Apr 2026, 11:54 | 10.2 | 10.2 °C |
| 15 Apr 2026, 13:22 | 11.5 | 11.5 °C |
| 10 Mar 2026, 11:46 | 7.2 | 7.2 °C |
| 6 Feb 2026, 11:34 | 4.2 | 4.2 °C |
| 20 Jan 2026, 09:37 | 5.5 | 5.5 °C |
| 5 Dec 2025, 10:54 | 6.3 | 6.3 °C |
| 6 Nov 2025, 10:56 | 10.4 | 10.4 °C |
| 6 Oct 2025, 09:18 | 11.9 | 11.9 °C |
| 17 Sep 2025, 11:49 | 13.1 | 13.1 °C |
| 6 Aug 2025, 11:11 | 16.4 | 16.4 °C |
| 15 Jul 2025, 11:45 | 15.5 | 15.5 °C |
| 9 Jun 2025, 10:35 | 11.5 | 11.5 °C |
| 12 May 2025, 10:21 | 12.4 | 12.4 °C |
| 4 Apr 2025, 09:55 | 8.7 | 8.7 °C |
| 7 Mar 2025, 10:27 | 7.3 | 7.3 °C |
| 17 Feb 2025, 12:37 | 3.4 | 3.4 °C |
| 30 Jan 2025, 11:31 | 3.7 | 3.7 °C |
| 3 Dec 2024, 11:10 | 5.8 | 5.8 °C |
| 18 Nov 2024, 11:46 | 4.6 | 4.6 °C |
| 18 Oct 2024, 09:56 | 10.9 | 10.9 °C |
| 16 Sep 2024, 10:37 | 11.8 | 11.8 °C |
| 21 Aug 2024, 12:43 | 14 | 14 °C |
| 17 Jul 2024, 10:23 | 12.5 | 12.5 °C |
| 17 Jun 2024, 10:22 | 11 | 11 °C |
pH
code 0061
7.97
Sampled 21 May 2026, 4 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 13:22 | 7.97 | 7.97 |
| 21 Apr 2026, 11:54 | 8.71 | 8.71 |
| 15 Apr 2026, 13:22 | 8.18 | 8.18 |
| 10 Mar 2026, 11:46 | 8.36 | 8.36 |
| 6 Feb 2026, 11:34 | 8.19 | 8.19 |
| 20 Jan 2026, 09:37 | 8.06 | 8.06 |
| 5 Dec 2025, 10:54 | 8.05 | 8.05 |
| 6 Nov 2025, 10:56 | 7.57 | 7.57 |
| 6 Oct 2025, 09:18 | 8.03 | 8.03 |
| 17 Sep 2025, 11:49 | 7.38 | 7.38 |
| 6 Aug 2025, 11:11 | 8.3 | 8.3 |
| 15 Jul 2025, 11:45 | 7.8 | 7.8 |
| 9 Jun 2025, 10:35 | 7.91 | 7.91 |
| 12 May 2025, 10:21 | 8.07 | 8.07 |
| 4 Apr 2025, 09:55 | 8.34 | 8.34 |
| 7 Mar 2025, 10:27 | 8.29 | 8.29 |
| 17 Feb 2025, 12:37 | 8.57 | 8.57 |
| 30 Jan 2025, 11:31 | 7.93 | 7.93 |
| 3 Dec 2024, 11:10 | 8.11 | 8.11 |
| 18 Nov 2024, 11:46 | 8.59 | 8.59 |
| 18 Oct 2024, 09:56 | 7.72 | 7.72 |
| 16 Sep 2024, 10:37 | 8.8 | 8.8 |
| 21 Aug 2024, 12:43 | 7.95 | 7.95 |
| 17 Jul 2024, 10:23 | 7.78 | 7.78 |
| 17 Jun 2024, 10:22 | 7.94 | 7.94 |
| 8 Mar 2024, 11:46 | 8.53 | 8.53 |
| 7 Feb 2024, 09:47 | 8.26 | 8.26 |
| 24 Jan 2024, 10:08 | 7.04 | 7.04 |
| 5 Dec 2023, 11:56 | 8 | 8 |
| 2 Nov 2023, 12:22 | 8.09 | 8.09 |
| 2 Oct 2023, 10:16 | 8.31 | 8.31 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.011 mg/l
Sampled 21 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 13:22 | 0.011 | 0.011 mg/l |
| 21 Apr 2026, 11:54 | 0.0032 | 0.0032 mg/l |
| 10 Mar 2026, 11:46 | 0.0052 | 0.0052 mg/l |
| 6 Feb 2026, 11:34 | 0.0086 | 0.0086 mg/l |
| 20 Jan 2026, 09:37 | 0.016 | 0.016 mg/l |
| 5 Dec 2025, 10:54 | 0.03 | 0.03 mg/l |
| 6 Nov 2025, 10:56 | 0.032 | 0.032 mg/l |
| 6 Oct 2025, 09:18 | 0.0093 | 0.0093 mg/l |
| 17 Sep 2025, 11:49 | 0.022 | 0.022 mg/l |
| 6 Aug 2025, 11:11 | 0.031 | 0.031 mg/l |
| 15 Jul 2025, 11:45 | 0.033 | 0.033 mg/l |
| 9 Jun 2025, 10:35 | 0.01 | 0.01 mg/l |
| 12 May 2025, 10:21 | <0.002 | below 0.002 mg/l (not detected above this) |
| 4 Apr 2025, 09:55 | 0.013 | 0.013 mg/l |
| 7 Mar 2025, 10:27 | 0.0072 | 0.0072 mg/l |
| 17 Feb 2025, 12:37 | 0.0055 | 0.0055 mg/l |
| 30 Jan 2025, 11:31 | 0.0067 | 0.0067 mg/l |
| 3 Dec 2024, 11:10 | 0.0073 | 0.0073 mg/l |
| 18 Nov 2024, 11:46 | 0.0074 | 0.0074 mg/l |
| 18 Oct 2024, 09:56 | 0.093 | 0.093 mg/l |
| 16 Sep 2024, 10:37 | 0.0057 | 0.0057 mg/l |
| 21 Aug 2024, 12:43 | 0.0066 | 0.0066 mg/l |
| 17 Jul 2024, 10:23 | <0.002 | below 0.002 mg/l (not detected above this) |
| 17 Jun 2024, 10:22 | 0.0058 | 0.0058 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.368 mg/l
Sampled 21 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 13:22 | 0.368 | 0.368 mg/l |
| 21 Apr 2026, 11:54 | 0.348 | 0.348 mg/l |
| 10 Mar 2026, 11:46 | 0.377 | 0.377 mg/l |
| 6 Feb 2026, 11:34 | 0.517 | 0.517 mg/l |
| 20 Jan 2026, 09:37 | 0.716 | 0.716 mg/l |
| 5 Dec 2025, 10:54 | 0.341 | 0.341 mg/l |
| 6 Nov 2025, 10:56 | 0.328 | 0.328 mg/l |
| 6 Oct 2025, 09:18 | 0.587 | 0.587 mg/l |
| 17 Sep 2025, 11:49 | 0.307 | 0.307 mg/l |
| 6 Aug 2025, 11:11 | 0.246 | 0.246 mg/l |
| 15 Jul 2025, 11:45 | 0.416 | 0.416 mg/l |
| 9 Jun 2025, 10:35 | 0.435 | 0.435 mg/l |
| 12 May 2025, 10:21 | 0.338 | 0.338 mg/l |
| 4 Apr 2025, 09:55 | 0.348 | 0.348 mg/l |
| 7 Mar 2025, 10:27 | 0.408 | 0.408 mg/l |
| 17 Feb 2025, 12:37 | 0.359 | 0.359 mg/l |
| 30 Jan 2025, 11:31 | 0.548 | 0.548 mg/l |
| 3 Dec 2024, 11:10 | 0.478 | 0.478 mg/l |
| 18 Nov 2024, 11:46 | 0.338 | 0.338 mg/l |
| 18 Oct 2024, 09:56 | 0.714 | 0.714 mg/l |
| 16 Sep 2024, 10:37 | 0.128 | 0.128 mg/l |
| 21 Aug 2024, 12:43 | 0.279 | 0.279 mg/l |
| 17 Jul 2024, 10:23 | 0.259 | 0.259 mg/l |
| 17 Jun 2024, 10:22 | 0.259 | 0.259 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0061 mg/l
Sampled 21 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 13:22 | 0.0061 | 0.0061 mg/l |
| 21 Apr 2026, 11:54 | 0.0046 | 0.0046 mg/l |
| 10 Mar 2026, 11:46 | 0.0057 | 0.0057 mg/l |
| 6 Feb 2026, 11:34 | 0.011 | 0.011 mg/l |
| 20 Jan 2026, 09:37 | 0.012 | 0.012 mg/l |
| 5 Dec 2025, 10:54 | 0.0074 | 0.0074 mg/l |
| 6 Nov 2025, 10:56 | 0.0093 | 0.0093 mg/l |
| 6 Oct 2025, 09:18 | 0.013 | 0.013 mg/l |
| 17 Sep 2025, 11:49 | 0.043 | 0.043 mg/l |
| 6 Aug 2025, 11:11 | 0.0061 | 0.0061 mg/l |
| 15 Jul 2025, 11:45 | 0.0027 | 0.0027 mg/l |
| 9 Jun 2025, 10:35 | 0.0061 | 0.0061 mg/l |
| 12 May 2025, 10:21 | 0.0039 | 0.0039 mg/l |
| 4 Apr 2025, 09:55 | 0.008 | 0.008 mg/l |
| 7 Mar 2025, 10:27 | 0.0089 | 0.0089 mg/l |
| 17 Feb 2025, 12:37 | 0.0075 | 0.0075 mg/l |
| 30 Jan 2025, 11:31 | 0.0087 | 0.0087 mg/l |
| 3 Dec 2024, 11:10 | 0.013 | 0.013 mg/l |
| 18 Nov 2024, 11:46 | 0.013 | 0.013 mg/l |
| 18 Oct 2024, 09:56 | 0.014 | 0.014 mg/l |
| 16 Sep 2024, 10:37 | 0.008 | 0.008 mg/l |
| 21 Aug 2024, 12:43 | 0.006 | 0.006 mg/l |
| 17 Jul 2024, 10:23 | 0.0062 | 0.0062 mg/l |
| 17 Jun 2024, 10:22 | 0.0084 | 0.0084 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
110 µS/cm
Sampled 21 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 13:22 | 110 | 110 µS/cm |
| 21 Apr 2026, 11:54 | 145 | 145 µS/cm |
| 15 Apr 2026, 13:22 | 121 | 121 µS/cm |
| 10 Mar 2026, 11:46 | 177 | 177 µS/cm |
| 6 Feb 2026, 11:34 | 204 | 204 µS/cm |
| 20 Jan 2026, 09:37 | 224 | 224 µS/cm |
| 5 Dec 2025, 10:54 | 103 | 103 µS/cm |
| 6 Nov 2025, 10:56 | 108 | 108 µS/cm |
| 6 Oct 2025, 09:18 | 260 | 260 µS/cm |
| 17 Sep 2025, 11:49 | 161 | 161 µS/cm |
| 6 Aug 2025, 11:11 | 162 | 162 µS/cm |
| 15 Jul 2025, 11:45 | 110 | 110 µS/cm |
| 9 Jun 2025, 10:35 | 182 | 182 µS/cm |
| 12 May 2025, 10:21 | 96 | 96 µS/cm |
| 4 Apr 2025, 09:55 | 123 | 123 µS/cm |
| 7 Mar 2025, 10:27 | 274 | 274 µS/cm |
| 17 Feb 2025, 12:37 | 232 | 232 µS/cm |
| 30 Jan 2025, 11:31 | 196 | 196 µS/cm |
| 3 Dec 2024, 11:10 | 244 | 244 µS/cm |
| 18 Nov 2024, 11:46 | 321 | 321 µS/cm |
| 18 Oct 2024, 09:56 | 287 | 287 µS/cm |
| 16 Sep 2024, 10:37 | 406 | 406 µS/cm |
| 21 Aug 2024, 12:43 | 101 | 101 µS/cm |
| 17 Jul 2024, 10:23 | 107 | 107 µS/cm |
| 17 Jun 2024, 10:22 | 145 | 145 µS/cm |
Everything measured here
65 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 65 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 25 | Jun 2024 – May 2026 | 107.7% 21 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 25 | Jun 2024 – May 2026 | 11.4 mg/l 21 May 2026 |
| Temperature of Water 0076 | River water | 25 | Jun 2024 – May 2026 | 12.5 °C 21 May 2026 |
| pH 0061 | River water | 31 | Oct 2023 – May 2026 | 7.97 21 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Jun 2024 – May 2026 | 0.011 mg/l 21 May 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | 0.368 mg/l 21 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | 0.0061 mg/l 21 May 2026 |
| Conductivity at 25 C 0077 | River water | 25 | Jun 2024 – May 2026 | 110 µS/cm 21 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | May 2024 – Sep 2024 | below 0.004 µg/l 16 Sep 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | May 2024 – Sep 2024 | below 0.005 µg/l 16 Sep 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – May 2026 | 40 mg/l 21 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | 0.00023 mg/l 21 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | 1.8 mg/l 21 May 2026 |
| Cadmium, Dissolved 0106 | River water | 6 | Oct 2023 – Mar 2024 | 0.05 µg/l 8 Mar 2024 |
| Calcium, Dissolved 0239 | River water | 6 | Oct 2023 – Mar 2024 | 68 mg/l 8 Mar 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 6 | Oct 2023 – Mar 2024 | 5.5 mg/l 8 Mar 2024 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Magnesium, Dissolved 0235 | River water | 6 | Oct 2023 – Mar 2024 | 2.4 mg/l 8 Mar 2024 |
| Mercury, Dissolved 0103 | River water | 6 | Oct 2023 – Mar 2024 | below 0.01 µg/l 8 Mar 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | 0.0019 mg/l 21 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 0.37 mg/l 21 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorobutanoic acid 2995 | River water | 2 | May 2024 – Sep 2024 | 0.0025 µg/l 16 Sep 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Perfluorodecanoic acid 8892 | River water | 2 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | May 2024 – Sep 2024 | below 0.005 µg/l 16 Sep 2024 |
| Perfluorododecanoic acid 8894 | River water | 2 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoroheptanoic acid 8889 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorohexanoic acid 8888 | River water | 2 | May 2024 – Sep 2024 | 0.00081 µg/l 16 Sep 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorononanoic acid 8891 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | May 2024 – Sep 2024 | 0.00054 µg/l 16 Sep 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluorooctanoic acid 8890 | River water | 2 | May 2024 – Sep 2024 | 0.0036 µg/l 16 Sep 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | May 2024 – Sep 2024 | below 0.0005 µg/l 16 Sep 2024 |
| Perfluoropentanoic acid 8887 | River water | 2 | May 2024 – Sep 2024 | below 0.001 µg/l 16 Sep 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | May 2024 – Sep 2024 | below 0.006 µg/l 16 Sep 2024 |
| Perfluorotridecanoic acid 2955 | River water | 2 | May 2024 – Sep 2024 | below 0.005 µg/l 16 Sep 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | May 2024 – Sep 2024 | below 0.004 µg/l 16 Sep 2024 |
| Perfluoroundecanoic acid 8893 | River water | 2 | May 2024 – Sep 2024 | below 0.002 µg/l 16 Sep 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.