Adjacent to Somerby Close - tributary of Stoke Brook
EA name: ADJACENT TO SOMERBY CLOSE - TRIB OF STOK (also listed as “ADJACENT TO SOMERBY CLOSE - TRIB OF STOKE BROOK”)
Environment Agency sampling point SW-SSN0204 · 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
- 2 Dec 2025, 08:5310 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
- 27 since 8 Jan 2024 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 361866, 181289As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stok
- River, by the map
- Not placedNearest line is 280 m away and its name does not agree. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (27 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.4%
Sampled 2 Dec 2025, 10 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 08:53 | 95.4 | 95.4% |
| 12 Nov 2025, 09:41 | 96.9 | 96.9% |
| 6 Oct 2025, 12:31 | 88.5 | 88.5% |
| 12 Sep 2025, 08:00 | 99.9 | 99.9% |
| 13 Aug 2025, 11:44 | 92 | 92% |
| 24 Jul 2025, 08:20 | 84 | 84% |
| 26 Jun 2025, 09:18 | 78.8 | 78.8% |
| 30 May 2025, 11:48 | 81.8 | 81.8% |
| 24 Apr 2025, 09:07 | 83.5 | 83.5% |
| 11 Mar 2025, 11:40 | 97.3 | 97.3% |
| 3 Feb 2025, 14:29 | 92.8 | 92.8% |
| 6 Jan 2025, 12:03 | 95.8 | 95.8% |
| 2 Dec 2024, 10:15 | 89.9 | 89.9% |
| 7 Nov 2024, 10:05 | 81.3 | 81.3% |
| 4 Oct 2024, 11:51 | 83.2 | 83.2% |
| 13 Sep 2024, 15:37 | 92.4 | 92.4% |
| 12 Aug 2024, 08:59 | 89.2 | 89.2% |
| 1 Jul 2024, 09:44 | 90 | 90% |
| 10 Jun 2024, 10:35 | 88.8 | 88.8% |
| 10 May 2024, 13:53 | 100.7 | 100.7% |
| 26 Apr 2024, 15:40 | 100.6 | 100.6% |
| 8 Mar 2024, 11:24 | 100.8 | 100.8% |
| 6 Feb 2024, 10:30 | 95.1 | 95.1% |
| 8 Jan 2024, 11:45 | 95.9 | 95.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.6 mg/l
Sampled 2 Dec 2025, 10 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 08:53 | 10.6 | 10.6 mg/l |
| 12 Nov 2025, 09:41 | 9.98 | 9.98 mg/l |
| 6 Oct 2025, 12:31 | 8.96 | 8.96 mg/l |
| 12 Sep 2025, 08:00 | 10.2 | 10.2 mg/l |
| 13 Aug 2025, 11:44 | 8.68 | 8.68 mg/l |
| 24 Jul 2025, 08:20 | 8.3 | 8.3 mg/l |
| 26 Jun 2025, 09:18 | 7.7 | 7.7 mg/l |
| 30 May 2025, 11:48 | 8.24 | 8.24 mg/l |
| 24 Apr 2025, 09:07 | 9.21 | 9.21 mg/l |
| 11 Mar 2025, 11:40 | 11.4 | 11.4 mg/l |
| 3 Feb 2025, 14:29 | 10.7 | 10.7 mg/l |
| 6 Jan 2025, 12:03 | 11.2 | 11.2 mg/l |
| 2 Dec 2024, 10:15 | 9.89 | 9.89 mg/l |
| 7 Nov 2024, 10:05 | 8.58 | 8.58 mg/l |
| 4 Oct 2024, 11:51 | 8.74 | 8.74 mg/l |
| 13 Sep 2024, 15:37 | 9.52 | 9.52 mg/l |
| 12 Aug 2024, 08:59 | 8.35 | 8.35 mg/l |
| 1 Jul 2024, 09:44 | 9.23 | 9.23 mg/l |
| 10 Jun 2024, 10:35 | 9.46 | 9.46 mg/l |
| 10 May 2024, 13:53 | 10.2 | 10.2 mg/l |
| 26 Apr 2024, 15:40 | 11.4 | 11.4 mg/l |
| 8 Mar 2024, 11:24 | 11.9 | 11.9 mg/l |
| 6 Feb 2024, 10:30 | 10.6 | 10.6 mg/l |
| 8 Jan 2024, 11:45 | 11.7 | 11.7 mg/l |
Water temperature
code 0076 · °C
10.7 °C
Sampled 2 Dec 2025, 10 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 08:53 | 10.7 | 10.7 °C |
| 12 Nov 2025, 09:41 | 13.9 | 13.9 °C |
| 6 Oct 2025, 12:31 | 14.7 | 14.7 °C |
| 12 Sep 2025, 08:00 | 14.4 | 14.4 °C |
| 13 Aug 2025, 11:44 | 18 | 18 °C |
| 24 Jul 2025, 08:20 | 15.8 | 15.8 °C |
| 26 Jun 2025, 09:18 | 16.3 | 16.3 °C |
| 30 May 2025, 11:48 | 14.9 | 14.9 °C |
| 24 Apr 2025, 09:07 | 10.9 | 10.9 °C |
| 11 Mar 2025, 11:40 | 8.4 | 8.4 °C |
| 3 Feb 2025, 14:29 | 9.1 | 9.1 °C |
| 6 Jan 2025, 12:03 | 8.5 | 8.5 °C |
| 2 Dec 2024, 10:15 | 11 | 11 °C |
| 7 Nov 2024, 10:05 | 12.8 | 12.8 °C |
| 4 Oct 2024, 11:51 | 13 | 13 °C |
| 13 Sep 2024, 15:37 | 13.9 | 13.9 °C |
| 12 Aug 2024, 08:59 | 18.4 | 18.4 °C |
| 1 Jul 2024, 09:44 | 14.1 | 14.1 °C |
| 10 Jun 2024, 10:35 | 12.4 | 12.4 °C |
| 10 May 2024, 13:53 | 14.7 | 14.7 °C |
| 26 Apr 2024, 15:40 | 9.9 | 9.9 °C |
| 8 Mar 2024, 11:24 | 8.1 | 8.1 °C |
| 6 Feb 2024, 10:30 | 10.3 | 10.3 °C |
| 8 Jan 2024, 11:45 | 6.8 | 6.8 °C |
pH
code 0061
7.92
Sampled 2 Dec 2025, 10 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 08:53 | 7.92 | 7.92 |
| 12 Nov 2025, 09:41 | 8.16 | 8.16 |
| 6 Oct 2025, 12:31 | 7.79 | 7.79 |
| 12 Sep 2025, 08:00 | 7.92 | 7.92 |
| 13 Aug 2025, 11:44 | 8.14 | 8.14 |
| 24 Jul 2025, 08:20 | 7.92 | 7.92 |
| 26 Jun 2025, 09:18 | 7.93 | 7.93 |
| 30 May 2025, 11:48 | 7.76 | 7.76 |
| 24 Apr 2025, 09:07 | 7.94 | 7.94 |
| 11 Mar 2025, 11:40 | 8.05 | 8.05 |
| 3 Feb 2025, 14:29 | 8 | 8 |
| 6 Jan 2025, 12:03 | 7.79 | 7.79 |
| 2 Dec 2024, 10:15 | 7.84 | 7.84 |
| 7 Nov 2024, 10:05 | 7.59 | 7.59 |
| 4 Oct 2024, 11:51 | 7.79 | 7.79 |
| 13 Sep 2024, 15:37 | 7.99 | 7.99 |
| 12 Aug 2024, 08:59 | 7.8 | 7.8 |
| 1 Jul 2024, 09:44 | 8.16 | 8.16 |
| 10 Jun 2024, 10:35 | 8.09 | 8.09 |
| 10 May 2024, 13:53 | 8.03 | 8.03 |
| 26 Apr 2024, 15:40 | 8.23 | 8.23 |
| 8 Mar 2024, 11:24 | 8.17 | 8.17 |
| 6 Feb 2024, 10:30 | 8.18 | 8.18 |
| 8 Jan 2024, 11:45 | 8.22 | 8.22 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.049 mg/l
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 08:53 | 0.049 | 0.049 mg/l |
| 12 Nov 2025, 09:41 | 0.039 | 0.039 mg/l |
| 6 Oct 2025, 12:31 | 0.015 | 0.015 mg/l |
| 12 Sep 2025, 08:00 | 0.12 | 0.12 mg/l |
| 13 Aug 2025, 11:44 | 0.02 | 0.02 mg/l |
| 24 Jul 2025, 08:20 | 0.032 | 0.032 mg/l |
| 26 Jun 2025, 09:18 | 0.05 | 0.05 mg/l |
| 30 May 2025, 11:48 | 0.069 | 0.069 mg/l |
| 24 Apr 2025, 09:07 | 0.29 | 0.29 mg/l |
| 11 Mar 2025, 11:40 | 0.033 | 0.033 mg/l |
| 3 Feb 2025, 14:29 | 0.038 | 0.038 mg/l |
| 6 Jan 2025, 12:03 | 0.077 | 0.077 mg/l |
| 2 Dec 2024, 10:15 | 0.11 | 0.11 mg/l |
| 7 Nov 2024, 10:05 | 0.16 | 0.16 mg/l |
| 4 Oct 2024, 11:51 | 0.75 | 0.75 mg/l |
| 13 Sep 2024, 15:37 | 0.15 | 0.15 mg/l |
| 12 Aug 2024, 08:59 | 0.015 | 0.015 mg/l |
| 10 Jun 2024, 10:35 | 0.013 | 0.013 mg/l |
| 10 May 2024, 13:53 | <0.002 | below 0.002 mg/l (not detected above this) |
| 26 Apr 2024, 15:40 | 0.041 | 0.041 mg/l |
| 8 Mar 2024, 11:24 | 0.091 | 0.091 mg/l |
| 6 Feb 2024, 10:30 | 0.27 | 0.27 mg/l |
| 8 Jan 2024, 11:45 | 0.025 | 0.025 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.88 mg/l
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 08:53 | 5.88 | 5.88 mg/l |
| 12 Nov 2025, 09:41 | 5.39 | 5.39 mg/l |
| 6 Oct 2025, 12:31 | 3.36 | 3.36 mg/l |
| 12 Sep 2025, 08:00 | 3.09 | 3.09 mg/l |
| 13 Aug 2025, 11:44 | 3.09 | 3.09 mg/l |
| 24 Jul 2025, 08:20 | 2.98 | 2.98 mg/l |
| 26 Jun 2025, 09:18 | 1.76 | 1.76 mg/l |
| 30 May 2025, 11:48 | 3.71 | 3.71 mg/l |
| 24 Apr 2025, 09:07 | 4.27 | 4.27 mg/l |
| 11 Mar 2025, 11:40 | 2.68 | 2.68 mg/l |
| 3 Feb 2025, 14:29 | 3.36 | 3.36 mg/l |
| 6 Jan 2025, 12:03 | 4.18 | 4.18 mg/l |
| 2 Dec 2024, 10:15 | 3.07 | 3.07 mg/l |
| 7 Nov 2024, 10:05 | 2.51 | 2.51 mg/l |
| 4 Oct 2024, 11:51 | 3.12 | 3.12 mg/l |
| 13 Sep 2024, 15:37 | 3.8 | 3.8 mg/l |
| 12 Aug 2024, 08:59 | 1.99 | 1.99 mg/l |
| 10 Jun 2024, 10:35 | 2.18 | 2.18 mg/l |
| 10 May 2024, 13:53 | 2.68 | 2.68 mg/l |
| 26 Apr 2024, 15:40 | 2.18 | 2.18 mg/l |
| 8 Mar 2024, 11:24 | 2.96 | 2.96 mg/l |
| 6 Feb 2024, 10:30 | 2.76 | 2.76 mg/l |
| 8 Jan 2024, 11:45 | 3.39 | 3.39 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.16 mg/l
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 08:53 | 0.16 | 0.16 mg/l |
| 12 Nov 2025, 09:41 | 0.14 | 0.14 mg/l |
| 6 Oct 2025, 12:31 | 0.64 | 0.64 mg/l |
| 12 Sep 2025, 08:00 | 0.081 | 0.081 mg/l |
| 13 Aug 2025, 11:44 | 0.8 | 0.8 mg/l |
| 24 Jul 2025, 08:20 | 0.86 | 0.86 mg/l |
| 26 Jun 2025, 09:18 | >0.5 | above 0.5 mg/l (the most the test can count) |
| 30 May 2025, 11:48 | 0.65 | 0.65 mg/l |
| 24 Apr 2025, 09:07 | 0.28 | 0.28 mg/l |
| 11 Mar 2025, 11:40 | 0.19 | 0.19 mg/l |
| 3 Feb 2025, 14:29 | 0.22 | 0.22 mg/l |
| 6 Jan 2025, 12:03 | 0.13 | 0.13 mg/l |
| 2 Dec 2024, 10:15 | 0.14 | 0.14 mg/l |
| 7 Nov 2024, 10:05 | 0.42 | 0.42 mg/l |
| 4 Oct 2024, 11:51 | 0.36 | 0.36 mg/l |
| 13 Sep 2024, 15:37 | 0.49 | 0.49 mg/l |
| 12 Aug 2024, 08:59 | 0.69 | 0.69 mg/l |
| 10 Jun 2024, 10:35 | 0.51 | 0.51 mg/l |
| 10 May 2024, 13:53 | 0.31 | 0.31 mg/l |
| 26 Apr 2024, 15:40 | 0.31 | 0.31 mg/l |
| 8 Mar 2024, 11:24 | 0.19 | 0.19 mg/l |
| 6 Feb 2024, 10:30 | 0.29 | 0.29 mg/l |
| 8 Jan 2024, 11:45 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
613 µS/cm
Sampled 2 Dec 2025, 10 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 08:53 | 613 | 613 µS/cm |
| 12 Nov 2025, 09:41 | 476 | 476 µS/cm |
| 6 Oct 2025, 12:31 | 617 | 617 µS/cm |
| 12 Sep 2025, 08:00 | 249 | 249 µS/cm |
| 13 Aug 2025, 11:44 | 850 | 850 µS/cm |
| 24 Jul 2025, 08:20 | 850 | 850 µS/cm |
| 26 Jun 2025, 09:18 | 993 | 993 µS/cm |
| 30 May 2025, 11:48 | 848 | 848 µS/cm |
| 24 Apr 2025, 09:07 | 672 | 672 µS/cm |
| 11 Mar 2025, 11:40 | 729 | 729 µS/cm |
| 3 Feb 2025, 14:29 | 772 | 772 µS/cm |
| 6 Jan 2025, 12:03 | 453 | 453 µS/cm |
| 2 Dec 2024, 10:15 | 608 | 608 µS/cm |
| 7 Nov 2024, 10:05 | 808 | 808 µS/cm |
| 4 Oct 2024, 11:51 | 691 | 691 µS/cm |
| 13 Sep 2024, 15:37 | 668 | 668 µS/cm |
| 12 Aug 2024, 08:59 | 740 | 740 µS/cm |
| 1 Jul 2024, 09:44 | 714 | 714 µS/cm |
| 10 Jun 2024, 10:35 | 641 | 641 µS/cm |
| 10 May 2024, 13:53 | 701 | 701 µS/cm |
| 26 Apr 2024, 15:40 | 748 | 748 µS/cm |
| 8 Mar 2024, 11:24 | 752 | 752 µS/cm |
| 6 Feb 2024, 10:30 | 836 | 836 µS/cm |
| 8 Jan 2024, 11:45 | 723 | 723 µS/cm |
Everything measured here
111 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 111 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 24 | Jan 2024 – Dec 2025 | 95.4% 2 Dec 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jan 2024 – Dec 2025 | 10.6 mg/l 2 Dec 2025 |
| Temperature of Water 0076 | River water | 24 | Jan 2024 – Dec 2025 | 10.7 °C 2 Dec 2025 |
| pH 0061 | River water | 24 | Jan 2024 – Dec 2025 | 7.92 2 Dec 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Jan 2024 – Dec 2025 | 0.049 mg/l 2 Dec 2025 |
| Nitrate as N 0117 | River water | 23 | Jan 2024 – Dec 2025 | 5.88 mg/l 2 Dec 2025 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Jan 2024 – Dec 2025 | 0.16 mg/l 2 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 24 | Jan 2024 – Dec 2025 | 613 µS/cm 2 Dec 2025 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Nov 2025 – Nov 2025 | below 0.002 µg/l 12 Nov 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Nov 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | May 2025 – Nov 2025 | below 0.004 µg/l 12 Nov 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Nov 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Nov 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Nov 2025 – Nov 2025 | below 0.004 µg/l 12 Nov 2025 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Nov 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Nov 2025 – Nov 2025 | 0.0014 µg/l 12 Nov 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Nov 2025 – Nov 2025 | below 0.01 µg/l 12 Nov 2025 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Nov 2025 – Nov 2025 | below 0.004 µg/l 12 Nov 2025 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Nov 2025 – Nov 2025 | below 0.01 µg/l 12 Nov 2025 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Nov 2025 – Nov 2025 | below 0.004 µg/l 12 Nov 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Nov 2025 – Nov 2025 | below 0.01 µg/l 12 Nov 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jan 2024 – Dec 2025 | 210 mg/l 2 Dec 2025 |
| Aluminium, Dissolved 6037 | River water | 3 | Apr 2025 – Oct 2025 | below 20 µg/l 6 Oct 2025 |
| Aminomethylphosphonic acid 7125 | River water | 9 | Apr 2025 – Dec 2025 | 0.16 µg/l 2 Dec 2025 |
| Ammonia un-ionised as N 0119 | River water | 23 | Jan 2024 – Dec 2025 | 0.00078 mg/l 2 Dec 2025 |
| Barium, Dissolved 9446 | River water | 3 | Apr 2025 – Oct 2025 | 73 µg/l 6 Oct 2025 |
| Boron, Dissolved 9447 | River water | 3 | Apr 2025 – Oct 2025 | below 100 µg/l 6 Oct 2025 |
| Cadmium, Dissolved 0106 | River water | 3 | Apr 2025 – Oct 2025 | 0.023 µg/l 6 Oct 2025 |
| Calcium, Dissolved 0239 | River water | 3 | Apr 2025 – Oct 2025 | 79 mg/l 6 Oct 2025 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 17 | Jul 2024 – Dec 2025 | 4.6 mg/l 2 Dec 2025 |
| Chloride 0172 | River water | 24 | Jan 2024 – Dec 2025 | 31 mg/l 2 Dec 2025 |
| Chromium, Dissolved 3409 | River water | 3 | Apr 2025 – Oct 2025 | below 0.5 µg/l 6 Oct 2025 |
| Copper : BLM Bioavailable 4821 | River water | 2 | Apr 2025 – Jul 2025 | 0.11 µg/l 24 Jul 2025 |
| Copper, Dissolved 6450 | River water | 3 | Apr 2025 – Oct 2025 | 1.1 µg/l 6 Oct 2025 |
| eDNA Report 3047 | River water | 3 | May 2024 – Jan 2025 | 1 text result 10 Jan 2025 |
| Environmental DNA Filtration 3064 | River water | 2 | May 2024 – Jul 2024 | DNA Stored 1 Jul 2024 |
| Flow Type 2896 | River water | 21 | Jan 2024 – Dec 2025 | Moderate Flow 2 Dec 2025 |
| Glyphosate 3007 | River water | 9 | Apr 2025 – Dec 2025 | below 0.1 µg/l 2 Dec 2025 |
| Hardness, Calcium 0163 | River water | 3 | Apr 2025 – Oct 2025 | 197 mg/l 6 Oct 2025 |
| Hardness, Total as CaCO3 0158 | River water | 3 | Apr 2025 – Oct 2025 | 237 mg/l 6 Oct 2025 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Nov 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| Iron, Dissolved 6460 | River water | 3 | Apr 2025 – Oct 2025 | below 30 µg/l 6 Oct 2025 |
| Lead : BLM Bioavailable 3377 | River water | 2 | Apr 2025 – Jul 2025 | 0.06 µg/l 24 Jul 2025 |
| Lead, Dissolved 0052 | River water | 3 | Apr 2025 – Oct 2025 | 0.11 µg/l 6 Oct 2025 |
| Lithium, Dissolved 4201 | River water | 3 | Apr 2025 – Oct 2025 | below 100 µg/l 6 Oct 2025 |
| Magnesium, Dissolved 0235 | River water | 3 | Apr 2025 – Oct 2025 | 9.6 mg/l 6 Oct 2025 |
| Manganese : BLM Bioavailable 4820 | River water | 2 | Apr 2025 – Jul 2025 | 17 µg/l 24 Jul 2025 |
| Manganese, Dissolved 6458 | River water | 3 | Apr 2025 – Oct 2025 | 10 µg/l 6 Oct 2025 |
| Mitochondrial marker : Fish 12S 2857 | River water | 3 | May 2024 – Jan 2025 | Present 10 Jan 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | May 2025 – Nov 2025 | below 0.002 µg/l 12 Nov 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | May 2025 – Nov 2025 | below 0.002 µg/l 12 Nov 2025 |
| Nickel : BLM Bioavailable 3878 | River water | 2 | Apr 2025 – Jul 2025 | 0.52 µg/l 24 Jul 2025 |
| Nickel, Dissolved 3410 | River water | 3 | Apr 2025 – Oct 2025 | 0.82 µg/l 6 Oct 2025 |
| Nitrite as N 0118 | River water | 23 | Jan 2024 – Dec 2025 | 0.021 mg/l 2 Dec 2025 |
| Nitrogen, Total as N 9686 | River water | 24 | Jan 2024 – Dec 2025 | 6.5 mg/l 2 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Jan 2024 – Dec 2025 | 5.9 mg/l 2 Dec 2025 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | May 2025 – Nov 2025 | 0.0058 µg/l 12 Nov 2025 |
| Perfluorobutanoic acid 2995 | River water | 2 | May 2025 – Nov 2025 | 0.0042 µg/l 12 Nov 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | May 2025 – Nov 2025 | 0.0012 µg/l 12 Nov 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| Perfluorodecanoic acid 8892 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | May 2025 – Nov 2025 | below 0.005 µg/l 12 Nov 2025 |
| Perfluorododecanoic acid 8894 | River water | 2 | May 2025 – Nov 2025 | below 0.002 µg/l 12 Nov 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluoroheptanoic acid 8889 | River water | 2 | May 2025 – Nov 2025 | 0.0018 µg/l 12 Nov 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | May 2025 – Nov 2025 | 0.00063 µg/l 12 Nov 2025 |
| Perfluorohexanoic acid 8888 | River water | 2 | May 2025 – Nov 2025 | 0.0076 µg/l 12 Nov 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluorononanoic acid 8891 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | May 2025 – Nov 2025 | below 0.002 µg/l 12 Nov 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | May 2025 – Nov 2025 | 0.0013 µg/l 12 Nov 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | May 2025 – Nov 2025 | 0.0012 µg/l 12 Nov 2025 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Nov 2025 – Nov 2025 | 0.0026 µg/l 12 Nov 2025 |
| Perfluorooctanoic acid 8890 | River water | 2 | May 2025 – Nov 2025 | 0.0032 µg/l 12 Nov 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | May 2025 – Nov 2025 | below 0.0005 µg/l 12 Nov 2025 |
| Perfluoropentanoic acid 8887 | River water | 2 | May 2025 – Nov 2025 | 0.0044 µg/l 12 Nov 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | May 2025 – Nov 2025 | below 0.006 µg/l 12 Nov 2025 |
| Perfluorotridecanoic acid 2955 | River water | 2 | May 2025 – Nov 2025 | below 0.002 µg/l 12 Nov 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | May 2025 – Nov 2025 | below 0.004 µg/l 12 Nov 2025 |
| Perfluoroundecanoic acid 8893 | River water | 2 | May 2025 – Nov 2025 | below 0.001 µg/l 12 Nov 2025 |
| Phosphorus, Total as P 0348 | River water | 24 | Jan 2024 – Dec 2025 | 0.14 mg/l 2 Dec 2025 |
| Potassium, Dissolved 0209 | River water | 3 | Apr 2025 – Oct 2025 | 4.7 mg/l 6 Oct 2025 |
| Preparation: DNA 5923 | River water | 2 | May 2024 – Jul 2024 | Done 1 Jul 2024 |
| Silica, reactive as SiO2 0182 | River water | 23 | Jan 2024 – Dec 2025 | 8.6 mg/l 2 Dec 2025 |
| Sodium, Dissolved 0205 | River water | 3 | Apr 2025 – Oct 2025 | 33 mg/l 6 Oct 2025 |
| Solids, Suspended at 105 C 0135 | River water | 24 | Jan 2024 – Dec 2025 | 10 mg/l 2 Dec 2025 |
| Strontium, Filtered 6693 | River water | 3 | Apr 2025 – Oct 2025 | 380 µg/l 6 Oct 2025 |
| Sulphate, Dissolved as SO4 7859 | River water | 3 | Apr 2025 – Oct 2025 | 69 mg/l 6 Oct 2025 |
| Zinc : BLM Bioavailable 4822 | River water | 2 | Apr 2025 – Jul 2025 | 1.8 µg/l 24 Jul 2025 |
| Zinc, Dissolved 3408 | River water | 3 | Apr 2025 – Oct 2025 | 3.4 µg/l 6 Oct 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.