River Wye at Redbrook Railway Bridge
EA name: R WYE AT REDBROOK RAILWAY BRIDGE
Environment Agency sampling point MD-H0000072 · 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
- 17 Aug 2026, 13:0345 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 24 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 353634, 209851As published, to the nearest 1 m. Open in a map
- River, by its own name
- Wye
- River, by the map
- Afon GwyPlaced on the river its name gives, 22 m from the line.
- Next gauge downstream
- Tintern_Abbey_Mill On the River Wye · 13 km along the river
- Nearest gauge upstream
- Redbrook River Station On the Wye · 1.4 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (12 samples)
Planned investigation (local monitoring) (12 samples)
Monitoring (national agency policy) (3 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
129.9%
Sampled 17 Aug 2026, 45 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 13:03 | 129.9 | 129.9% |
| 1 Jul 2026, 12:07 | 116.1 | 116.1% |
| 8 Jun 2026, 12:25 | 95.2 | 95.2% |
| 13 Mar 2026, 13:18 | 96.5 | 96.5% |
| 12 Feb 2026, 11:15 | 97.7 | 97.7% |
| 13 Jan 2026, 11:23 | 100.5 | 100.5% |
| 17 Dec 2025, 11:52 | 99.7 | 99.7% |
| 18 Nov 2025, 12:40 | 95.9 | 95.9% |
| 27 Oct 2025, 09:12 | 96.7 | 96.7% |
| 18 Sep 2025, 11:57 | 91.2 | 91.2% |
| 18 Aug 2025, 11:22 | 93.1 | 93.1% |
| 17 Jul 2025, 11:22 | 98.5 | 98.5% |
| 2 Jun 2025, 12:39 | 110.2 | 110.2% |
| 8 May 2025, 11:45 | 114.2 | 114.2% |
| 16 Apr 2025, 11:23 | 100.3 | 100.3% |
| 18 Mar 2025, 12:32 | 106.6 | 106.6% |
| 10 Dec 2024, 13:02 | 95.8 | 95.8% |
| 19 Nov 2024, 09:44 | 95.6 | 95.6% |
| 29 Oct 2024, 10:23 | 93.8 | 93.8% |
| 20 May 2024, 10:22 | 98.9 | 98.9% |
| 29 Apr 2024, 10:04 | 105.1 | 105.1% |
| 29 Feb 2024, 11:54 | 100.4 | 100.4% |
| 23 Jan 2024, 13:55 | 98.9 | 98.9% |
| 29 Nov 2023, 12:11 | 98.5 | 98.5% |
| 24 Oct 2023, 12:05 | 96.6 | 96.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.2 mg/l
Sampled 17 Aug 2026, 45 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 13:03 | 11.2 | 11.2 mg/l |
| 1 Jul 2026, 12:07 | 10.4 | 10.4 mg/l |
| 8 Jun 2026, 12:25 | 9.25 | 9.25 mg/l |
| 13 Mar 2026, 13:18 | 11 | 11 mg/l |
| 12 Feb 2026, 11:15 | 11.4 | 11.4 mg/l |
| 13 Jan 2026, 11:23 | 12 | 12 mg/l |
| 17 Dec 2025, 11:52 | 11.8 | 11.8 mg/l |
| 18 Nov 2025, 12:40 | 11.3 | 11.3 mg/l |
| 27 Oct 2025, 09:12 | 10.9 | 10.9 mg/l |
| 18 Sep 2025, 11:57 | 8.96 | 8.96 mg/l |
| 18 Aug 2025, 11:22 | 8.51 | 8.51 mg/l |
| 17 Jul 2025, 11:22 | 8.88 | 8.88 mg/l |
| 2 Jun 2025, 12:39 | 10.4 | 10.4 mg/l |
| 8 May 2025, 11:45 | 11.7 | 11.7 mg/l |
| 16 Apr 2025, 11:23 | 11 | 11 mg/l |
| 18 Mar 2025, 12:32 | 12.6 | 12.6 mg/l |
| 10 Dec 2024, 13:02 | 11.7 | 11.7 mg/l |
| 19 Nov 2024, 09:44 | 11.3 | 11.3 mg/l |
| 29 Oct 2024, 10:23 | 10.2 | 10.2 mg/l |
| 20 May 2024, 10:22 | 9.55 | 9.55 mg/l |
| 29 Apr 2024, 10:04 | 11.8 | 11.8 mg/l |
| 29 Feb 2024, 11:54 | 12 | 12 mg/l |
| 23 Jan 2024, 13:55 | 11.4 | 11.4 mg/l |
| 29 Nov 2023, 12:11 | 12.3 | 12.3 mg/l |
| 24 Oct 2023, 12:05 | 10.6 | 10.6 mg/l |
Water temperature
code 0076 · °C
22.5 °C
Sampled 17 Aug 2026, 45 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 13:03 | 22.5 | 22.5 °C |
| 1 Jul 2026, 12:07 | 20.6 | 20.6 °C |
| 8 Jun 2026, 12:25 | 16.6 | 16.6 °C |
| 13 Mar 2026, 13:18 | 9.7 | 9.7 °C |
| 12 Feb 2026, 11:15 | 8.5 | 8.5 °C |
| 13 Jan 2026, 11:23 | 7.6 | 7.6 °C |
| 17 Dec 2025, 11:52 | 7.9 | 7.9 °C |
| 18 Nov 2025, 12:40 | 8.2 | 8.2 °C |
| 27 Oct 2025, 09:12 | 9.8 | 9.8 °C |
| 18 Sep 2025, 11:57 | 16.1 | 16.1 °C |
| 18 Aug 2025, 11:22 | 19.6 | 19.6 °C |
| 17 Jul 2025, 11:22 | 20.3 | 20.3 °C |
| 2 Jun 2025, 12:39 | 18 | 18 °C |
| 8 May 2025, 11:45 | 14.1 | 14.1 °C |
| 16 Apr 2025, 11:23 | 11.3 | 11.3 °C |
| 18 Mar 2025, 12:32 | 8 | 8 °C |
| 10 Dec 2024, 13:02 | 6.7 | 6.7 °C |
| 19 Nov 2024, 09:44 | 8.1 | 8.1 °C |
| 29 Oct 2024, 10:23 | 11.4 | 11.4 °C |
| 20 May 2024, 10:22 | 16.9 | 16.9 °C |
| 29 Apr 2024, 10:04 | 10.3 | 10.3 °C |
| 29 Feb 2024, 11:54 | 7.7 | 7.7 °C |
| 23 Jan 2024, 13:55 | 9 | 9 °C |
| 29 Nov 2023, 12:11 | 5.9 | 5.9 °C |
| 24 Oct 2023, 12:05 | 11.2 | 11.2 °C |
pH
code 0061
8.56
Sampled 17 Aug 2026, 45 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 13:03 | 8.56 | 8.56 |
| 1 Jul 2026, 12:07 | 8.67 | 8.67 |
| 8 Jun 2026, 12:25 | 8.25 | 8.25 |
| 13 Mar 2026, 13:18 | 8.02 | 8.02 |
| 12 Feb 2026, 11:15 | 7.63 | 7.63 |
| 13 Jan 2026, 11:23 | 7.35 | 7.35 |
| 17 Dec 2025, 11:52 | 7.75 | 7.75 |
| 18 Nov 2025, 12:40 | 8.01 | 8.01 |
| 27 Oct 2025, 09:12 | 7.38 | 7.38 |
| 18 Sep 2025, 11:57 | 7.56 | 7.56 |
| 18 Aug 2025, 11:22 | 8.04 | 8.04 |
| 17 Jul 2025, 11:22 | 8.14 | 8.14 |
| 2 Jun 2025, 12:39 | 8.72 | 8.72 |
| 8 May 2025, 11:45 | 8.68 | 8.68 |
| 16 Apr 2025, 11:23 | 8.32 | 8.32 |
| 18 Mar 2025, 12:32 | 8.32 | 8.32 |
| 10 Dec 2024, 13:02 | 7.58 | 7.58 |
| 19 Nov 2024, 09:44 | 8.29 | 8.29 |
| 29 Oct 2024, 10:23 | 7.47 | 7.47 |
| 20 May 2024, 10:22 | 8.2 | 8.2 |
| 29 Apr 2024, 10:04 | 8.43 | 8.43 |
| 29 Feb 2024, 11:54 | 8.08 | 8.08 |
| 23 Jan 2024, 13:55 | 7.73 | 7.73 |
| 29 Nov 2023, 12:11 | 8.07 | 8.07 |
| 24 Oct 2023, 12:05 | 7.63 | 7.63 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.002 mg/l (not detected above this)
Sampled 17 Aug 2026, 45 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 13:03 | <0.002 | below 0.002 mg/l (not detected above this) |
| 1 Jul 2026, 12:07 | 0.014 | 0.014 mg/l |
| 8 Jun 2026, 12:25 | 0.07 | 0.07 mg/l |
| 13 Mar 2026, 13:18 | 0.089 | 0.089 mg/l |
| 12 Feb 2026, 11:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jan 2026, 11:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Dec 2025, 11:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Nov 2025, 12:40 | 0.043 | 0.043 mg/l |
| 27 Oct 2025, 09:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Sep 2025, 11:57 | 0.045 | 0.045 mg/l |
| 18 Aug 2025, 11:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jul 2025, 11:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jun 2025, 12:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2025, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2025, 11:23 | 0.053 | 0.053 mg/l |
| 18 Mar 2025, 12:32 | 0.021 | 0.021 mg/l |
| 10 Dec 2024, 13:02 | 0.022 | 0.022 mg/l |
| 19 Nov 2024, 09:44 | 0.021 | 0.021 mg/l |
| 29 Oct 2024, 10:23 | 0.025 | 0.025 mg/l |
| 20 May 2024, 10:22 | 0.037 | 0.037 mg/l |
| 29 Apr 2024, 10:04 | 0.018 | 0.018 mg/l |
| 29 Feb 2024, 11:54 | 0.022 | 0.022 mg/l |
| 23 Jan 2024, 13:55 | 0.097 | 0.097 mg/l |
| 7 Dec 2023, 14:48 | 0.062 | 0.062 mg/l |
| 29 Nov 2023, 12:11 | 0.025 | 0.025 mg/l |
| 24 Oct 2023, 12:05 | 0.02 | 0.02 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.07 mg/l
Sampled 17 Aug 2026, 45 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 13:03 | 2.07 | 2.07 mg/l |
| 1 Jul 2026, 12:07 | 2.38 | 2.38 mg/l |
| 8 Jun 2026, 12:25 | 2.28 | 2.28 mg/l |
| 13 Mar 2026, 13:18 | 2.39 | 2.39 mg/l |
| 12 Feb 2026, 11:15 | 2.89 | 2.89 mg/l |
| 13 Jan 2026, 11:23 | 1.79 | 1.79 mg/l |
| 17 Dec 2025, 11:52 | 2.29 | 2.29 mg/l |
| 18 Nov 2025, 12:40 | 2.49 | 2.49 mg/l |
| 27 Oct 2025, 09:12 | 0.996 | 0.996 mg/l |
| 18 Sep 2025, 11:57 | 1.29 | 1.29 mg/l |
| 18 Aug 2025, 11:22 | 1.97 | 1.97 mg/l |
| 17 Jul 2025, 11:22 | 1.88 | 1.88 mg/l |
| 2 Jun 2025, 12:39 | 2.48 | 2.48 mg/l |
| 8 May 2025, 11:45 | 3.18 | 3.18 mg/l |
| 16 Apr 2025, 11:23 | 3.98 | 3.98 mg/l |
| 18 Mar 2025, 12:32 | 3.99 | 3.99 mg/l |
| 10 Dec 2024, 13:02 | 1.79 | 1.79 mg/l |
| 19 Nov 2024, 09:44 | 3.49 | 3.49 mg/l |
| 29 Oct 2024, 10:23 | 2.89 | 2.89 mg/l |
| 20 May 2024, 10:22 | 3.19 | 3.19 mg/l |
| 29 Apr 2024, 10:04 | 3.79 | 3.79 mg/l |
| 29 Feb 2024, 11:54 | 3.29 | 3.29 mg/l |
| 23 Jan 2024, 13:55 | 1.88 | 1.88 mg/l |
| 7 Dec 2023, 14:48 | 3.25 | 3.25 mg/l |
| 29 Nov 2023, 12:11 | 2.69 | 2.69 mg/l |
| 24 Oct 2023, 12:05 | 2.19 | 2.19 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0011 mg/l
Sampled 17 Aug 2026, 45 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 13:03 | 0.0011 | 0.0011 mg/l |
| 1 Jul 2026, 12:07 | 0.013 | 0.013 mg/l |
| 8 Jun 2026, 12:25 | 0.037 | 0.037 mg/l |
| 13 Mar 2026, 13:18 | 0.068 | 0.068 mg/l |
| 12 Feb 2026, 11:15 | 0.41 | 0.41 mg/l |
| 13 Jan 2026, 11:23 | 0.038 | 0.038 mg/l |
| 17 Dec 2025, 11:52 | 0.65 | 0.65 mg/l |
| 18 Nov 2025, 12:40 | 0.066 | 0.066 mg/l |
| 27 Oct 2025, 09:12 | 0.023 | 0.023 mg/l |
| 18 Sep 2025, 11:57 | 0.023 | 0.023 mg/l |
| 18 Aug 2025, 11:22 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Jul 2025, 11:22 | 0.016 | 0.016 mg/l |
| 2 Jun 2025, 12:39 | <0.01 | below 0.01 mg/l (not detected above this) |
| 8 May 2025, 11:45 | <0.01 | below 0.01 mg/l (not detected above this) |
| 16 Apr 2025, 11:23 | 0.26 | 0.26 mg/l |
| 18 Mar 2025, 12:32 | 0.012 | 0.012 mg/l |
| 10 Dec 2024, 13:02 | 0.036 | 0.036 mg/l |
| 19 Nov 2024, 09:44 | 0.038 | 0.038 mg/l |
| 29 Oct 2024, 10:23 | 0.64 | 0.64 mg/l |
| 20 May 2024, 10:22 | 0.035 | 0.035 mg/l |
| 29 Apr 2024, 10:04 | 0.017 | 0.017 mg/l |
| 29 Feb 2024, 11:54 | 0.019 | 0.019 mg/l |
| 23 Jan 2024, 13:55 | 0.045 | 0.045 mg/l |
| 7 Dec 2023, 14:48 | 0.28 | 0.28 mg/l |
| 29 Nov 2023, 12:11 | 0.028 | 0.028 mg/l |
| 24 Oct 2023, 12:05 | 0.059 | 0.059 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
357 µS/cm
Sampled 17 Aug 2026, 45 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 13:03 | 357 | 357 µS/cm |
| 1 Jul 2026, 12:07 | 343 | 343 µS/cm |
| 8 Jun 2026, 12:25 | 281 | 281 µS/cm |
| 13 Mar 2026, 13:18 | 279 | 279 µS/cm |
| 12 Feb 2026, 11:15 | 288 | 288 µS/cm |
| 13 Jan 2026, 11:23 | 174 | 174 µS/cm |
| 17 Dec 2025, 11:52 | 219 | 219 µS/cm |
| 18 Nov 2025, 12:40 | 195 | 195 µS/cm |
| 27 Oct 2025, 09:12 | 142 | 142 µS/cm |
| 18 Sep 2025, 11:57 | 159 | 159 µS/cm |
| 18 Aug 2025, 11:22 | 337 | 337 µS/cm |
| 17 Jul 2025, 11:22 | 324 | 324 µS/cm |
| 2 Jun 2025, 12:39 | 358 | 358 µS/cm |
| 8 May 2025, 11:45 | 396 | 396 µS/cm |
| 16 Apr 2025, 11:23 | 453 | 453 µS/cm |
| 18 Mar 2025, 12:32 | 426 | 426 µS/cm |
| 10 Dec 2024, 13:02 | 224 | 224 µS/cm |
| 19 Nov 2024, 09:44 | 432 | 432 µS/cm |
| 29 Oct 2024, 10:23 | 350 | 350 µS/cm |
| 20 May 2024, 10:22 | 361 | 361 µS/cm |
| 29 Apr 2024, 10:04 | 413 | 413 µS/cm |
| 29 Feb 2024, 11:54 | 339 | 339 µS/cm |
| 23 Jan 2024, 13:55 | 200 | 200 µS/cm |
| 29 Nov 2023, 12:11 | 294 | 294 µS/cm |
| 24 Oct 2023, 12:05 | 216 | 216 µS/cm |
Everything measured here
77 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 77 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 25 | Oct 2023 – Aug 2026 | 129.9% 17 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 25 | Oct 2023 – Aug 2026 | 11.2 mg/l 17 Aug 2026 |
| Temperature of Water 0076 | River water | 25 | Oct 2023 – Aug 2026 | 22.5 °C 17 Aug 2026 |
| pH 0061 | River water | 25 | Oct 2023 – Aug 2026 | 8.56 17 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 26 | Oct 2023 – Aug 2026 | below 0.002 mg/l 17 Aug 2026 |
| Nitrate as N 0117 | River water | 26 | Oct 2023 – Aug 2026 | 2.07 mg/l 17 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 26 | Oct 2023 – Aug 2026 | 0.0011 mg/l 17 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 25 | Oct 2023 – Aug 2026 | 357 µS/cm 17 Aug 2026 |
| (Perfluorohexanesulfonyl)[3-(trimethylazaniumyl)propyl]azanide 2890 | River water | 1 | Jul 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Jul 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Jul 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 4 | Dec 2023 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Jul 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Jul 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Jul 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Jul 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Jul 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Jul 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Jul 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Jul 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Jul 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Jul 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 26 | Oct 2023 – Aug 2026 | 120 mg/l 17 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 25 | Oct 2023 – Aug 2026 | below 0.00009 mg/l 17 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 7 | Feb 2024 – Mar 2025 | below 1 mg/l 18 Mar 2025 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Jul 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 4 | Dec 2023 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 4 | Dec 2023 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Nitrite as N 0118 | River water | 26 | Oct 2023 – Aug 2026 | 0.035 mg/l 17 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 26 | Oct 2023 – Aug 2026 | 2.1 mg/l 17 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | Apr 2024 – Jul 2026 | 0.0011 µg/l 1 Jul 2026 |
| Perfluorobutanoic acid 2995 | River water | 3 | Apr 2024 – Jul 2026 | 0.001 µg/l 1 Jul 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorodecanoic acid 8892 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 4 | Dec 2023 – Jul 2026 | below 0.005 µg/l 1 Jul 2026 |
| Perfluorododecanoic acid 8894 | River water | 4 | Dec 2023 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoroheptanoic acid 8889 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorohexane sulfonamido amine 2874 | River water | 1 | Jul 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorohexanoic acid 8888 | River water | 4 | Dec 2023 – Jul 2026 | 0.0011 µg/l 1 Jul 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorononanoic acid 8891 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 4 | Dec 2023 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Jul 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorooctanoic acid 8890 | River water | 4 | Dec 2023 – Jul 2026 | 0.00052 µg/l 1 Jul 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 4 | Dec 2023 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoropentanoic acid 8887 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 4 | Dec 2023 – Jul 2026 | below 0.006 µg/l 1 Jul 2026 |
| Perfluorotridecanoic acid 2955 | River water | 4 | Dec 2023 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 4 | Dec 2023 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| Perfluoroundecanoic acid 8893 | River water | 4 | Dec 2023 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Phosphorus, Total as P 0348 | River water | 21 | Apr 2024 – Aug 2026 | 0.025 mg/l 17 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.