Sincil Dyke Washingborough
EA name: SINCIL DYKE WASHINGBOROUGH
Environment Agency sampling point AN-SIND4 · 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
- 5 Aug 2026, 08:5757 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 36 since 9 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 501547, 370926As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Not placedTwo watercourses within reach (3 m and 60 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
- Monitoring (national agency policy) (36 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
42.1%
Sampled 5 Aug 2026, 57 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 08:57 | 42.1 | 42.1% |
| 9 Jul 2026, 11:40 | 113 | 113% |
| 16 Jun 2026, 08:16 | 99.6 | 99.6% |
| 22 May 2026, 08:01 | 73.6 | 73.6% |
| 16 Apr 2026, 12:41 | 97.5 | 97.5% |
| 7 Apr 2026, 14:01 | 103.2 | 103.2% |
| 6 Mar 2026, 11:53 | 89.5 | 89.5% |
| 19 Feb 2026, 09:56 | 92.1 | 92.1% |
| 29 Jan 2026, 13:55 | 86.9 | 86.9% |
| 5 Dec 2025, 09:47 | 82.8 | 82.8% |
| 12 Nov 2025, 08:27 | 63.6 | 63.6% |
| 1 Oct 2025, 12:12 | 67.3 | 67.3% |
| 11 Sep 2025, 12:37 | 64.7 | 64.7% |
| 15 Aug 2025, 09:24 | 74.1 | 74.1% |
| 11 Jul 2025, 10:52 | 88.7 | 88.7% |
| 24 Jun 2025, 12:25 | 105.6 | 105.6% |
| 12 May 2025, 13:04 | 128.3 | 128.3% |
| 8 Apr 2025, 11:10 | 102.6 | 102.6% |
| 3 Mar 2025, 09:24 | 94.3 | 94.3% |
| 5 Feb 2025, 09:48 | 90.2 | 90.2% |
| 5 Dec 2024, 09:28 | 92.8 | 92.8% |
| 4 Nov 2024, 09:03 | 89.7 | 89.7% |
| 4 Oct 2024, 08:13 | 72.9 | 72.9% |
| 11 Sep 2024, 10:11 | 86.4 | 86.4% |
| 13 Aug 2024, 11:26 | 90.7 | 90.7% |
| 3 Jul 2024, 13:16 | 91.5 | 91.5% |
| 12 Jun 2024, 09:00 | 89.8 | 89.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
3.83 mg/l
Sampled 5 Aug 2026, 57 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 08:57 | 3.83 | 3.83 mg/l |
| 9 Jul 2026, 11:40 | 9.65 | 9.65 mg/l |
| 16 Jun 2026, 08:16 | 9.74 | 9.74 mg/l |
| 22 May 2026, 08:01 | 7.23 | 7.23 mg/l |
| 16 Apr 2026, 12:41 | 10.3 | 10.3 mg/l |
| 7 Apr 2026, 14:01 | 11 | 11 mg/l |
| 6 Mar 2026, 11:53 | 10.2 | 10.2 mg/l |
| 19 Feb 2026, 09:56 | 11.7 | 11.7 mg/l |
| 29 Jan 2026, 13:55 | 10.9 | 10.9 mg/l |
| 5 Dec 2025, 09:47 | 10.1 | 10.1 mg/l |
| 12 Nov 2025, 08:27 | 6.7 | 6.7 mg/l |
| 1 Oct 2025, 12:12 | 6.87 | 6.87 mg/l |
| 11 Sep 2025, 12:37 | 6.19 | 6.19 mg/l |
| 15 Aug 2025, 09:24 | 6.54 | 6.54 mg/l |
| 11 Jul 2025, 10:52 | 7.74 | 7.74 mg/l |
| 24 Jun 2025, 12:25 | 9.81 | 9.81 mg/l |
| 12 May 2025, 13:04 | 12.1 | 12.1 mg/l |
| 8 Apr 2025, 11:10 | 11.2 | 11.2 mg/l |
| 3 Mar 2025, 09:24 | 11.7 | 11.7 mg/l |
| 5 Feb 2025, 09:48 | 11.3 | 11.3 mg/l |
| 5 Dec 2024, 09:28 | 10.8 | 10.8 mg/l |
| 4 Nov 2024, 09:03 | 9.69 | 9.69 mg/l |
| 4 Oct 2024, 08:13 | 7.93 | 7.93 mg/l |
| 11 Sep 2024, 10:11 | 8.71 | 8.71 mg/l |
| 13 Aug 2024, 11:26 | 8.13 | 8.13 mg/l |
| 3 Jul 2024, 13:16 | 8.77 | 8.77 mg/l |
| 12 Jun 2024, 09:00 | 9.17 | 9.17 mg/l |
Water temperature
code 0076 · °C
19.9 °C
Sampled 5 Aug 2026, 57 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 08:57 | 19.9 | 19.9 °C |
| 9 Jul 2026, 11:40 | 23.1 | 23.1 °C |
| 16 Jun 2026, 08:16 | 16.3 | 16.3 °C |
| 22 May 2026, 08:01 | 16.1 | 16.1 °C |
| 16 Apr 2026, 12:41 | 12.8 | 12.8 °C |
| 7 Apr 2026, 14:01 | 12.2 | 12.2 °C |
| 6 Mar 2026, 11:53 | 9.6 | 9.6 °C |
| 19 Feb 2026, 09:56 | 5 | 5 °C |
| 29 Jan 2026, 13:55 | 5.6 | 5.6 °C |
| 5 Dec 2025, 09:47 | 6.6 | 6.6 °C |
| 12 Nov 2025, 08:27 | 12.9 | 12.9 °C |
| 1 Oct 2025, 12:12 | 14.3 | 14.3 °C |
| 11 Sep 2025, 12:37 | 17.4 | 17.4 °C |
| 15 Aug 2025, 09:24 | 21.4 | 21.4 °C |
| 11 Jul 2025, 10:52 | 22 | 22 °C |
| 24 Jun 2025, 12:25 | 18.8 | 18.8 °C |
| 12 May 2025, 13:04 | 18.2 | 18.2 °C |
| 8 Apr 2025, 11:10 | 11.3 | 11.3 °C |
| 3 Mar 2025, 09:24 | 6.1 | 6.1 °C |
| 5 Feb 2025, 09:48 | 5.6 | 5.6 °C |
| 5 Dec 2024, 09:28 | 8.5 | 8.5 °C |
| 4 Nov 2024, 09:03 | 11.8 | 11.8 °C |
| 4 Oct 2024, 08:13 | 11.5 | 11.5 °C |
| 11 Sep 2024, 10:11 | 14.9 | 14.9 °C |
| 13 Aug 2024, 11:26 | 20.6 | 20.6 °C |
| 3 Jul 2024, 13:16 | 17.3 | 17.3 °C |
| 12 Jun 2024, 09:00 | 14.3 | 14.3 °C |
pH
code 0061
7.44
Sampled 5 Aug 2026, 57 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 08:57 | 7.44 | 7.44 |
| 9 Jul 2026, 11:40 | 8.08 | 8.08 |
| 16 Jun 2026, 08:16 | 7.99 | 7.99 |
| 22 May 2026, 08:01 | 7.62 | 7.62 |
| 16 Apr 2026, 12:41 | 8.17 | 8.17 |
| 7 Apr 2026, 14:01 | 7.99 | 7.99 |
| 6 Mar 2026, 11:53 | 7.89 | 7.89 |
| 19 Feb 2026, 09:56 | 7.92 | 7.92 |
| 29 Jan 2026, 13:55 | 8.41 | 8.41 |
| 5 Dec 2025, 09:47 | 7.75 | 7.75 |
| 12 Nov 2025, 08:27 | 7.4 | 7.4 |
| 1 Oct 2025, 12:12 | 7.5 | 7.5 |
| 11 Sep 2025, 12:37 | 7.44 | 7.44 |
| 15 Aug 2025, 09:24 | 7.7 | 7.7 |
| 11 Jul 2025, 10:52 | 7.65 | 7.65 |
| 24 Jun 2025, 12:25 | 8.36 | 8.36 |
| 12 May 2025, 13:04 | 8.17 | 8.17 |
| 8 Apr 2025, 11:10 | 7.92 | 7.92 |
| 3 Mar 2025, 09:24 | 8.02 | 8.02 |
| 5 Feb 2025, 09:48 | 7.97 | 7.97 |
| 5 Dec 2024, 09:28 | 7.86 | 7.86 |
| 4 Nov 2024, 09:03 | 7.87 | 7.87 |
| 4 Oct 2024, 08:13 | 7.6 | 7.6 |
| 11 Sep 2024, 10:11 | 7.84 | 7.84 |
| 13 Aug 2024, 11:26 | 7.97 | 7.97 |
| 3 Jul 2024, 13:16 | 8.01 | 8.01 |
| 12 Jun 2024, 09:00 | 8.17 | 8.17 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.55 mg/l
Sampled 5 Aug 2026, 57 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 08:57 | 0.55 | 0.55 mg/l |
| 9 Jul 2026, 11:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jun 2026, 08:16 | 0.074 | 0.074 mg/l |
| 22 May 2026, 08:01 | 1.6 | 1.6 mg/l |
| 16 Apr 2026, 12:41 | 0.12 | 0.12 mg/l |
| 6 Mar 2026, 11:53 | 0.18 | 0.18 mg/l |
| 19 Feb 2026, 09:56 | 0.19 | 0.19 mg/l |
| 29 Jan 2026, 13:55 | 0.13 | 0.13 mg/l |
| 5 Dec 2025, 09:47 | 0.2 | 0.2 mg/l |
| 12 Nov 2025, 08:27 | 1.3 | 1.3 mg/l |
| 1 Oct 2025, 12:12 | 0.15 | 0.15 mg/l |
| 11 Sep 2025, 12:37 | 0.47 | 0.47 mg/l |
| 15 Aug 2025, 09:24 | 0.061 | 0.061 mg/l |
| 11 Jul 2025, 10:52 | 0.07 | 0.07 mg/l |
| 24 Jun 2025, 12:25 | 0.34 | 0.34 mg/l |
| 12 May 2025, 13:04 | 0.081 | 0.081 mg/l |
| 8 Apr 2025, 11:10 | 0.51 | 0.51 mg/l |
| 3 Mar 2025, 09:24 | 0.19 | 0.19 mg/l |
| 5 Feb 2025, 09:48 | 0.25 | 0.25 mg/l |
| 5 Dec 2024, 09:28 | 0.22 | 0.22 mg/l |
| 4 Nov 2024, 09:03 | 0.069 | 0.069 mg/l |
| 4 Oct 2024, 08:13 | 0.053 | 0.053 mg/l |
| 11 Sep 2024, 10:11 | 0.079 | 0.079 mg/l |
| 13 Aug 2024, 11:26 | 0.07 | 0.07 mg/l |
| 3 Jul 2024, 13:16 | 0.14 | 0.14 mg/l |
| 12 Jun 2024, 09:00 | 0.12 | 0.12 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
15.7 mg/l
Sampled 5 Aug 2026, 57 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 08:57 | 15.7 | 15.7 mg/l |
| 9 Jul 2026, 11:40 | 15.9 | 15.9 mg/l |
| 16 Jun 2026, 08:16 | 14.8 | 14.8 mg/l |
| 22 May 2026, 08:01 | 15.3 | 15.3 mg/l |
| 16 Apr 2026, 12:41 | 12.9 | 12.9 mg/l |
| 6 Mar 2026, 11:53 | 10.9 | 10.9 mg/l |
| 19 Feb 2026, 09:56 | 10.9 | 10.9 mg/l |
| 29 Jan 2026, 13:55 | 11 | 11 mg/l |
| 5 Dec 2025, 09:47 | 16.9 | 16.9 mg/l |
| 12 Nov 2025, 08:27 | 15.6 | 15.6 mg/l |
| 1 Oct 2025, 12:12 | 16.8 | 16.8 mg/l |
| 11 Sep 2025, 12:37 | 18.7 | 18.7 mg/l |
| 15 Aug 2025, 09:24 | 14.9 | 14.9 mg/l |
| 11 Jul 2025, 10:52 | 20.7 | 20.7 mg/l |
| 24 Jun 2025, 12:25 | 12.8 | 12.8 mg/l |
| 12 May 2025, 13:04 | 12.9 | 12.9 mg/l |
| 8 Apr 2025, 11:10 | 15.9 | 15.9 mg/l |
| 3 Mar 2025, 09:24 | 12.9 | 12.9 mg/l |
| 5 Feb 2025, 09:48 | 14.9 | 14.9 mg/l |
| 5 Dec 2024, 09:28 | 14.9 | 14.9 mg/l |
| 4 Nov 2024, 09:03 | 11 | 11 mg/l |
| 4 Oct 2024, 08:13 | 13.9 | 13.9 mg/l |
| 11 Sep 2024, 10:11 | 12.9 | 12.9 mg/l |
| 13 Aug 2024, 11:26 | 11.9 | 11.9 mg/l |
| 3 Jul 2024, 13:16 | 11.9 | 11.9 mg/l |
| 12 Jun 2024, 09:00 | 8.83 | 8.83 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.31 mg/l
Sampled 9 Jul 2026, 3 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Jul 2026, 11:40 | 0.31 | 0.31 mg/l |
| 16 Jun 2026, 08:16 | 0.26 | 0.26 mg/l |
| 22 May 2026, 08:01 | 0.26 | 0.26 mg/l |
| 16 Apr 2026, 12:41 | 0.17 | 0.17 mg/l |
| 6 Mar 2026, 11:53 | 0.11 | 0.11 mg/l |
| 19 Feb 2026, 09:56 | 0.1 | 0.1 mg/l |
| 29 Jan 2026, 13:55 | 0.13 | 0.13 mg/l |
| 5 Dec 2025, 09:47 | 0.17 | 0.17 mg/l |
| 12 Nov 2025, 08:27 | 0.42 | 0.42 mg/l |
| 1 Oct 2025, 12:12 | 0.44 | 0.44 mg/l |
| 11 Sep 2025, 12:37 | 0.66 | 0.66 mg/l |
| 15 Aug 2025, 09:24 | 0.37 | 0.37 mg/l |
| 11 Jul 2025, 10:52 | 0.46 | 0.46 mg/l |
| 24 Jun 2025, 12:25 | 0.41 | 0.41 mg/l |
| 12 May 2025, 13:04 | 0.56 | 0.56 mg/l |
| 8 Apr 2025, 11:10 | 0.36 | 0.36 mg/l |
| 3 Mar 2025, 09:24 | 0.26 | 0.26 mg/l |
| 5 Feb 2025, 09:48 | 0.21 | 0.21 mg/l |
| 5 Dec 2024, 09:28 | 0.24 | 0.24 mg/l |
| 4 Nov 2024, 09:03 | 0.23 | 0.23 mg/l |
| 4 Oct 2024, 08:13 | 0.21 | 0.21 mg/l |
| 11 Sep 2024, 10:11 | 0.41 | 0.41 mg/l |
| 13 Aug 2024, 11:26 | 0.33 | 0.33 mg/l |
| 3 Jul 2024, 13:16 | 0.39 | 0.39 mg/l |
| 12 Jun 2024, 09:00 | 0.23 | 0.23 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1112 µS/cm
Sampled 5 Aug 2026, 57 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 08:57 | 1112 | 1112 µS/cm |
| 9 Jul 2026, 11:40 | 1067 | 1067 µS/cm |
| 16 Jun 2026, 08:16 | 944 | 944 µS/cm |
| 22 May 2026, 08:01 | 977 | 977 µS/cm |
| 16 Apr 2026, 12:41 | 885 | 885 µS/cm |
| 7 Apr 2026, 14:01 | 893 | 893 µS/cm |
| 6 Mar 2026, 11:53 | 794 | 794 µS/cm |
| 19 Feb 2026, 09:56 | 765 | 765 µS/cm |
| 29 Jan 2026, 13:55 | 652 | 652 µS/cm |
| 5 Dec 2025, 09:47 | 793 | 793 µS/cm |
| 12 Nov 2025, 08:27 | 918 | 918 µS/cm |
| 1 Oct 2025, 12:12 | 996 | 996 µS/cm |
| 11 Sep 2025, 12:37 | 1099 | 1099 µS/cm |
| 15 Aug 2025, 09:24 | 1008 | 1008 µS/cm |
| 11 Jul 2025, 10:52 | 1086 | 1086 µS/cm |
| 24 Jun 2025, 12:25 | 987 | 987 µS/cm |
| 12 May 2025, 13:04 | 930 | 930 µS/cm |
| 8 Apr 2025, 11:10 | 973 | 973 µS/cm |
| 3 Mar 2025, 09:24 | 858 | 858 µS/cm |
| 5 Feb 2025, 09:48 | 944 | 944 µS/cm |
| 5 Dec 2024, 09:28 | 938 | 938 µS/cm |
| 4 Nov 2024, 09:03 | 923 | 923 µS/cm |
| 4 Oct 2024, 08:13 | 618 | 618 µS/cm |
| 11 Sep 2024, 10:11 | 1110 | 1110 µS/cm |
| 13 Aug 2024, 11:26 | 1049 | 1049 µS/cm |
| 3 Jul 2024, 13:16 | 980 | 980 µS/cm |
| 12 Jun 2024, 09:00 | 884 | 884 µS/cm |
Everything measured here
63 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 63 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 27 | Jun 2024 – Aug 2026 | 42.1% 5 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – Aug 2026 | 3.83 mg/l 5 Aug 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Aug 2026 | 19.9 °C 5 Aug 2026 |
| pH 0061 | River water | 27 | Jun 2024 – Aug 2026 | 7.44 5 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 26 | Jun 2024 – Aug 2026 | 0.55 mg/l 5 Aug 2026 |
| Nitrate as N 0117 | River water | 26 | Jun 2024 – Aug 2026 | 15.7 mg/l 5 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 25 | Jun 2024 – Jul 2026 | 0.31 mg/l 9 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Aug 2026 | 1112 µS/cm 5 Aug 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 7 May 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | May 2024 – May 2024 | below 0.004 µg/l 7 May 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 7 May 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 26 | Jun 2024 – Aug 2026 | 170 mg/l 5 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 26 | Jun 2024 – Aug 2026 | 0.00583 mg/l 5 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 26 | Jun 2024 – Aug 2026 | below 3 mg/l 5 Aug 2026 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 31 | Oct 2023 – Aug 2026 | 1 text result 5 Aug 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| LCMS Screen : Semi Quantitative 7299 | River water | 35 | Oct 2023 – Aug 2026 | 1 text result 5 Aug 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 7 May 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 7 May 2024 |
| Nitrite as N 0118 | River water | 26 | Jun 2024 – Aug 2026 | 0.26 mg/l 5 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 26 | Jun 2024 – Aug 2026 | 16 mg/l 5 Aug 2026 |
| Non Target Screening : Water 2876 | River water | 13 | Aug 2025 – Aug 2026 | 1 text result 5 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | May 2024 – May 2024 | 0.0023 µg/l 7 May 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | May 2024 – May 2024 | 0.0041 µg/l 7 May 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 7 May 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 7 May 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 7 May 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 7 May 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | May 2024 – May 2024 | 0.0016 µg/l 7 May 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | May 2024 – May 2024 | 0.0016 µg/l 7 May 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | May 2024 – May 2024 | 0.003 µg/l 7 May 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 7 May 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 7 May 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | May 2024 – May 2024 | 0.0012 µg/l 7 May 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | May 2024 – May 2024 | 0.0013 µg/l 7 May 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | May 2024 – May 2024 | 0.002 µg/l 7 May 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 7 May 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | May 2024 – May 2024 | 0.0035 µg/l 7 May 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | May 2024 – May 2024 | below 0.006 µg/l 7 May 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 7 May 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | May 2024 – May 2024 | below 0.004 µg/l 7 May 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 7 May 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.