Gratton Lane Endon Brook - Horton Brook
EA name: GRATTON LANE ENDON BROOK - HORTON BROOK (also listed as “SSN1386 GRATTON LANE ENDON BROOK - HORTON BROOK”)
Environment Agency sampling point MD-SSN1386 · 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, 11:4310 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 10 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 393205, 355159As published, to the nearest 1 m. Open in a map
- River, by its own name
- Gratton Lane Endon Brook
- River, by the map
- Not placedNearest line is 458 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 · %
100.4%
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 11:43 | 100.4 | 100.4% |
| 6 Oct 2025, 12:24 | 96.5 | 96.5% |
| 8 Sep 2025, 12:59 | 92.8 | 92.8% |
| 6 Aug 2025, 09:25 | 91.6 | 91.6% |
| 2 Jul 2025, 08:26 | 84.4 | 84.4% |
| 17 Jun 2025, 10:38 | 98.5 | 98.5% |
| 2 May 2025, 11:46 | 94.1 | 94.1% |
| 16 Apr 2025, 10:25 | 96.6 | 96.6% |
| 31 Mar 2025, 10:54 | 99.9 | 99.9% |
| 11 Feb 2025, 07:35 | 99.8 | 99.8% |
| 13 Jan 2025, 10:23 | 100 | 100% |
| 2 Dec 2024, 08:17 | 98.7 | 98.7% |
| 6 Nov 2024, 08:18 | 94.7 | 94.7% |
| 9 Oct 2024, 08:11 | 100 | 100% |
| 3 Sep 2024, 10:50 | 92 | 92% |
| 2 Aug 2024, 07:58 | 91.9 | 91.9% |
| 3 Jul 2024, 14:23 | 93.5 | 93.5% |
| 11 Jun 2024, 08:09 | 95.4 | 95.4% |
| 7 May 2024, 10:09 | 94 | 94% |
| 8 Apr 2024, 14:40 | 99.9 | 99.9% |
| 13 Mar 2024, 09:24 | 98.7 | 98.7% |
| 6 Feb 2024, 10:47 | 98.7 | 98.7% |
| 10 Jan 2024, 08:14 | 96.6 | 96.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.2 mg/l
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 11:43 | 12.2 | 12.2 mg/l |
| 6 Oct 2025, 12:24 | 10.5 | 10.5 mg/l |
| 8 Sep 2025, 12:59 | 9.62 | 9.62 mg/l |
| 6 Aug 2025, 09:25 | 9.39 | 9.39 mg/l |
| 2 Jul 2025, 08:26 | 8.12 | 8.12 mg/l |
| 17 Jun 2025, 10:38 | 9.65 | 9.65 mg/l |
| 2 May 2025, 11:46 | 9.67 | 9.67 mg/l |
| 16 Apr 2025, 10:25 | 11.3 | 11.3 mg/l |
| 31 Mar 2025, 10:54 | 12 | 12 mg/l |
| 11 Feb 2025, 07:35 | 13.2 | 13.2 mg/l |
| 13 Jan 2025, 10:23 | 13.6 | 13.6 mg/l |
| 2 Dec 2024, 08:17 | 11.6 | 11.6 mg/l |
| 6 Nov 2024, 08:18 | 10.7 | 10.7 mg/l |
| 9 Oct 2024, 08:11 | 10.8 | 10.8 mg/l |
| 3 Sep 2024, 10:50 | 9.27 | 9.27 mg/l |
| 2 Aug 2024, 07:58 | 8.86 | 8.86 mg/l |
| 3 Jul 2024, 14:23 | 9.76 | 9.76 mg/l |
| 11 Jun 2024, 08:09 | 10.8 | 10.8 mg/l |
| 7 May 2024, 10:09 | 10.1 | 10.1 mg/l |
| 8 Apr 2024, 14:40 | 10.9 | 10.9 mg/l |
| 13 Mar 2024, 09:24 | 11.6 | 11.6 mg/l |
| 6 Feb 2024, 10:47 | 11.6 | 11.6 mg/l |
| 10 Jan 2024, 08:14 | 13.2 | 13.2 mg/l |
Water temperature
code 0076 · °C
7 °C
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 11:43 | 7 | 7 °C |
| 6 Oct 2025, 12:24 | 11.6 | 11.6 °C |
| 8 Sep 2025, 12:59 | 13.6 | 13.6 °C |
| 6 Aug 2025, 09:25 | 14.1 | 14.1 °C |
| 2 Jul 2025, 08:26 | 17.1 | 17.1 °C |
| 17 Jun 2025, 10:38 | 16.2 | 16.2 °C |
| 2 May 2025, 11:46 | 14 | 14 °C |
| 16 Apr 2025, 10:25 | 8.6 | 8.6 °C |
| 31 Mar 2025, 10:54 | 7.5 | 7.5 °C |
| 11 Feb 2025, 07:35 | 3.7 | 3.7 °C |
| 13 Jan 2025, 10:23 | 2.6 | 2.6 °C |
| 2 Dec 2024, 08:17 | 8.1 | 8.1 °C |
| 6 Nov 2024, 08:18 | 10 | 10 °C |
| 9 Oct 2024, 08:11 | 11.8 | 11.8 °C |
| 3 Sep 2024, 10:50 | 14.9 | 14.9 °C |
| 2 Aug 2024, 07:58 | 17 | 17 °C |
| 3 Jul 2024, 14:23 | 13.3 | 13.3 °C |
| 11 Jun 2024, 08:09 | 9.9 | 9.9 °C |
| 7 May 2024, 10:09 | 12.1 | 12.1 °C |
| 8 Apr 2024, 14:40 | 11.4 | 11.4 °C |
| 13 Mar 2024, 09:24 | 8.1 | 8.1 °C |
| 6 Feb 2024, 10:47 | 8.3 | 8.3 °C |
| 10 Jan 2024, 08:14 | 2.4 | 2.4 °C |
pH
code 0061
7.8
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 11:43 | 7.8 | 7.8 |
| 6 Oct 2025, 12:24 | 7.76 | 7.76 |
| 8 Sep 2025, 12:59 | 8.04 | 8.04 |
| 6 Aug 2025, 09:25 | 8.11 | 8.11 |
| 2 Jul 2025, 08:26 | 7.95 | 7.95 |
| 17 Jun 2025, 10:38 | 7.96 | 7.96 |
| 2 May 2025, 11:46 | 8.01 | 8.01 |
| 16 Apr 2025, 10:25 | 8.12 | 8.12 |
| 31 Mar 2025, 10:54 | 8.17 | 8.17 |
| 11 Feb 2025, 07:35 | 7.93 | 7.93 |
| 13 Jan 2025, 10:23 | 8.12 | 8.12 |
| 2 Dec 2024, 08:17 | 7.96 | 7.96 |
| 6 Nov 2024, 08:18 | 7.77 | 7.77 |
| 9 Oct 2024, 08:11 | 7.61 | 7.61 |
| 3 Sep 2024, 10:50 | 7.79 | 7.79 |
| 2 Aug 2024, 07:58 | 7.99 | 7.99 |
| 3 Jul 2024, 14:23 | 8.02 | 8.02 |
| 11 Jun 2024, 08:09 | 7.98 | 7.98 |
| 7 May 2024, 10:09 | 7.85 | 7.85 |
| 8 Apr 2024, 14:40 | 7.83 | 7.83 |
| 13 Mar 2024, 09:24 | 7.76 | 7.76 |
| 6 Feb 2024, 10:47 | 7.79 | 7.79 |
| 10 Jan 2024, 08:14 | 7.91 | 7.91 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.019 mg/l
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 11:43 | 0.019 | 0.019 mg/l |
| 6 Oct 2025, 12:24 | 0.049 | 0.049 mg/l |
| 8 Sep 2025, 12:59 | 0.11 | 0.11 mg/l |
| 6 Aug 2025, 09:25 | 0.0094 | 0.0094 mg/l |
| 2 Jul 2025, 08:26 | 0.014 | 0.014 mg/l |
| 17 Jun 2025, 10:38 | 0.016 | 0.016 mg/l |
| 2 May 2025, 11:46 | 0.025 | 0.025 mg/l |
| 16 Apr 2025, 10:25 | 0.019 | 0.019 mg/l |
| 31 Mar 2025, 10:54 | 0.0077 | 0.0077 mg/l |
| 11 Feb 2025, 07:35 | 0.054 | 0.054 mg/l |
| 13 Jan 2025, 10:23 | 0.038 | 0.038 mg/l |
| 2 Dec 2024, 08:17 | 0.026 | 0.026 mg/l |
| 6 Nov 2024, 08:18 | 0.075 | 0.075 mg/l |
| 9 Oct 2024, 08:11 | 0.046 | 0.046 mg/l |
| 3 Sep 2024, 10:50 | 0.044 | 0.044 mg/l |
| 2 Aug 2024, 07:58 | 0.0052 | 0.0052 mg/l |
| 3 Jul 2024, 14:23 | 0.0082 | 0.0082 mg/l |
| 11 Jun 2024, 08:09 | 0.036 | 0.036 mg/l |
| 7 May 2024, 10:09 | 0.036 | 0.036 mg/l |
| 8 Apr 2024, 14:40 | 0.029 | 0.029 mg/l |
| 13 Mar 2024, 09:24 | 0.09 | 0.09 mg/l |
| 6 Feb 2024, 10:47 | 0.07 | 0.07 mg/l |
| 10 Jan 2024, 08:14 | 0.12 | 0.12 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.69 mg/l
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 11:43 | 2.69 | 2.69 mg/l |
| 6 Oct 2025, 12:24 | 2.98 | 2.98 mg/l |
| 8 Sep 2025, 12:59 | 1.47 | 1.47 mg/l |
| 6 Aug 2025, 09:25 | 0.439 | 0.439 mg/l |
| 2 Jul 2025, 08:26 | 0.737 | 0.737 mg/l |
| 17 Jun 2025, 10:38 | 0.676 | 0.676 mg/l |
| 2 May 2025, 11:46 | 0.867 | 0.867 mg/l |
| 16 Apr 2025, 10:25 | 0.593 | 0.593 mg/l |
| 31 Mar 2025, 10:54 | 0.575 | 0.575 mg/l |
| 11 Feb 2025, 07:35 | 1.19 | 1.19 mg/l |
| 13 Jan 2025, 10:23 | 1.49 | 1.49 mg/l |
| 2 Dec 2024, 08:17 | 1.09 | 1.09 mg/l |
| 6 Nov 2024, 08:18 | 0.869 | 0.869 mg/l |
| 9 Oct 2024, 08:11 | 1.09 | 1.09 mg/l |
| 3 Sep 2024, 10:50 | 0.958 | 0.958 mg/l |
| 2 Aug 2024, 07:58 | 0.848 | 0.848 mg/l |
| 3 Jul 2024, 14:23 | 0.899 | 0.899 mg/l |
| 11 Jun 2024, 08:09 | 1.08 | 1.08 mg/l |
| 7 May 2024, 10:09 | 0.933 | 0.933 mg/l |
| 8 Apr 2024, 14:40 | 0.819 | 0.819 mg/l |
| 13 Mar 2024, 09:24 | 1.09 | 1.09 mg/l |
| 6 Feb 2024, 10:47 | 1.28 | 1.28 mg/l |
| 10 Jan 2024, 08:14 | 1.58 | 1.58 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.054 mg/l
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 11:43 | 0.054 | 0.054 mg/l |
| 6 Oct 2025, 12:24 | 0.045 | 0.045 mg/l |
| 8 Sep 2025, 12:59 | 0.042 | 0.042 mg/l |
| 6 Aug 2025, 09:25 | 0.034 | 0.034 mg/l |
| 2 Jul 2025, 08:26 | 0.062 | 0.062 mg/l |
| 17 Jun 2025, 10:38 | 0.049 | 0.049 mg/l |
| 2 May 2025, 11:46 | 0.032 | 0.032 mg/l |
| 16 Apr 2025, 10:25 | 0.02 | 0.02 mg/l |
| 31 Mar 2025, 10:54 | 0.033 | 0.033 mg/l |
| 11 Feb 2025, 07:35 | 0.031 | 0.031 mg/l |
| 13 Jan 2025, 10:23 | 0.034 | 0.034 mg/l |
| 2 Dec 2024, 08:17 | 0.11 | 0.11 mg/l |
| 6 Nov 2024, 08:18 | 0.05 | 0.05 mg/l |
| 9 Oct 2024, 08:11 | 0.24 | 0.24 mg/l |
| 3 Sep 2024, 10:50 | 0.047 | 0.047 mg/l |
| 2 Aug 2024, 07:58 | 0.056 | 0.056 mg/l |
| 3 Jul 2024, 14:23 | 0.046 | 0.046 mg/l |
| 11 Jun 2024, 08:09 | 0.063 | 0.063 mg/l |
| 7 May 2024, 10:09 | 0.052 | 0.052 mg/l |
| 8 Apr 2024, 14:40 | 0.063 | 0.063 mg/l |
| 13 Mar 2024, 09:24 | 0.056 | 0.056 mg/l |
| 6 Feb 2024, 10:47 | 0.054 | 0.054 mg/l |
| 10 Jan 2024, 08:14 | 0.036 | 0.036 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
245 µS/cm
Sampled 2 Dec 2025, 10 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Dec 2025, 11:43 | 245 | 245 µS/cm |
| 6 Oct 2025, 12:24 | 352 | 352 µS/cm |
| 8 Sep 2025, 12:59 | 394 | 394 µS/cm |
| 6 Aug 2025, 09:25 | 409 | 409 µS/cm |
| 2 Jul 2025, 08:26 | 417 | 417 µS/cm |
| 17 Jun 2025, 10:38 | 418 | 418 µS/cm |
| 2 May 2025, 11:46 | 398 | 398 µS/cm |
| 16 Apr 2025, 10:25 | 381 | 381 µS/cm |
| 31 Mar 2025, 10:54 | 364 | 364 µS/cm |
| 11 Feb 2025, 07:35 | 305 | 305 µS/cm |
| 13 Jan 2025, 10:23 | 288 | 288 µS/cm |
| 2 Dec 2024, 08:17 | 230 | 230 µS/cm |
| 6 Nov 2024, 08:18 | 308 | 308 µS/cm |
| 9 Oct 2024, 08:11 | 173 | 173 µS/cm |
| 3 Sep 2024, 10:50 | 397 | 397 µS/cm |
| 2 Aug 2024, 07:58 | 387 | 387 µS/cm |
| 3 Jul 2024, 14:23 | 363 | 363 µS/cm |
| 11 Jun 2024, 08:09 | 318 | 318 µS/cm |
| 7 May 2024, 10:09 | 327 | 327 µS/cm |
| 8 Apr 2024, 14:40 | 212 | 212 µS/cm |
| 13 Mar 2024, 09:24 | 224 | 224 µS/cm |
| 6 Feb 2024, 10:47 | 281 | 281 µS/cm |
| 10 Jan 2024, 08:14 | 277 | 277 µS/cm |
Everything measured here
97 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 97 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Jan 2024 – Dec 2025 | 100.4% 2 Dec 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Jan 2024 – Dec 2025 | 12.2 mg/l 2 Dec 2025 |
| Temperature of Water 0076 | River water | 23 | Jan 2024 – Dec 2025 | 7 °C 2 Dec 2025 |
| pH 0061 | River water | 23 | Jan 2024 – Dec 2025 | 7.8 2 Dec 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Jan 2024 – Dec 2025 | 0.019 mg/l 2 Dec 2025 |
| Nitrate as N 0117 | River water | 23 | Jan 2024 – Dec 2025 | 2.69 mg/l 2 Dec 2025 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Jan 2024 – Dec 2025 | 0.054 mg/l 2 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 23 | Jan 2024 – Dec 2025 | 245 µS/cm 2 Dec 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | May 2025 – May 2025 | below 0.002 µg/l 2 May 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | May 2025 – May 2025 | below 0.004 µg/l 2 May 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | May 2025 – May 2025 | below 0.005 µg/l 2 May 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Jan 2024 – Dec 2025 | 69 mg/l 2 Dec 2025 |
| Aluminium, Dissolved 6037 | River water | 3 | Apr 2025 – Oct 2025 | 46 µg/l 6 Oct 2025 |
| Aminomethylphosphonic acid 7125 | River water | 8 | Apr 2025 – Dec 2025 | below 0.1 µg/l 2 Dec 2025 |
| Ammonia un-ionised as N 0119 | River water | 23 | Jan 2024 – Dec 2025 | 0.00018 mg/l 2 Dec 2025 |
| Barium, Dissolved 9446 | River water | 3 | Apr 2025 – Oct 2025 | 110 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 | 0.016 µg/l 6 Oct 2025 |
| Calcium, Dissolved 0239 | River water | 3 | Apr 2025 – Oct 2025 | 45 mg/l 6 Oct 2025 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 16 | Jul 2024 – Dec 2025 | 14 mg/l 2 Dec 2025 |
| Chloride 0172 | River water | 23 | Jan 2024 – Dec 2025 | 16 mg/l 2 Dec 2025 |
| Chromium, Dissolved 3409 | River water | 3 | Apr 2025 – Oct 2025 | 0.62 µg/l 6 Oct 2025 |
| Copper : BLM Bioavailable 4821 | River water | 2 | Apr 2025 – Jul 2025 | 0.06 µg/l 2 Jul 2025 |
| Copper, Dissolved 6450 | River water | 3 | Apr 2025 – Oct 2025 | 5.4 µg/l 6 Oct 2025 |
| eDNA Report 3047 | River water | 4 | May 2024 – Jan 2025 | 1 text result 14 Jan 2025 |
| Environmental DNA Filtration 3064 | River water | 3 | May 2024 – Oct 2024 | DNA Stored 21 Oct 2024 |
| Flow Type 2896 | River water | 22 | Jan 2024 – Dec 2025 | Moderate Flow 2 Dec 2025 |
| Glyphosate 3007 | River water | 8 | Apr 2025 – Dec 2025 | below 0.1 µg/l 2 Dec 2025 |
| Hardness, Calcium 0163 | River water | 3 | Apr 2025 – Oct 2025 | 112 mg/l 6 Oct 2025 |
| Hardness, Total as CaCO3 0158 | River water | 3 | Apr 2025 – Oct 2025 | 137 mg/l 6 Oct 2025 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| Iron, Dissolved 6460 | River water | 3 | Apr 2025 – Oct 2025 | 400 µg/l 6 Oct 2025 |
| Lead : BLM Bioavailable 3377 | River water | 2 | Apr 2025 – Jul 2025 | 0.04 µg/l 2 Jul 2025 |
| Lead, Dissolved 0052 | River water | 3 | Apr 2025 – Oct 2025 | 0.41 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 | 5.9 mg/l 6 Oct 2025 |
| Manganese : BLM Bioavailable 4820 | River water | 2 | Apr 2025 – Jul 2025 | 72 µg/l 2 Jul 2025 |
| Manganese, Dissolved 6458 | River water | 3 | Apr 2025 – Oct 2025 | 82 µg/l 6 Oct 2025 |
| Mitochondrial marker : Fish 12S 2857 | River water | 4 | May 2024 – Jan 2025 | Present 14 Jan 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | May 2025 – May 2025 | below 0.002 µg/l 2 May 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | May 2025 – May 2025 | below 0.002 µg/l 2 May 2025 |
| Nickel : BLM Bioavailable 3878 | River water | 2 | Apr 2025 – Jul 2025 | 0.67 µg/l 2 Jul 2025 |
| Nickel, Dissolved 3410 | River water | 3 | Apr 2025 – Oct 2025 | 3.9 µg/l 6 Oct 2025 |
| Nitrite as N 0118 | River water | 23 | Jan 2024 – Dec 2025 | 0.007 mg/l 2 Dec 2025 |
| Nitrogen, Total as N 9686 | River water | 22 | Jan 2024 – Dec 2025 | 4.1 mg/l 2 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Jan 2024 – Dec 2025 | 2.7 mg/l 2 Dec 2025 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| Perfluorobutanoic acid 2995 | River water | 1 | May 2025 – May 2025 | 0.0012 µg/l 2 May 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | May 2025 – May 2025 | below 0.002 µg/l 2 May 2025 |
| Perfluorodecanoic acid 8892 | River water | 1 | May 2025 – May 2025 | below 0.002 µg/l 2 May 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | May 2025 – May 2025 | below 0.005 µg/l 2 May 2025 |
| Perfluorododecanoic acid 8894 | River water | 1 | May 2025 – May 2025 | below 0.002 µg/l 2 May 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluoroheptanoic acid 8889 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorohexanoic acid 8888 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorononanoic acid 8891 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | May 2025 – May 2025 | below 0.002 µg/l 2 May 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluorooctanoic acid 8890 | River water | 1 | May 2025 – May 2025 | 0.00051 µg/l 2 May 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | May 2025 – May 2025 | below 0.0005 µg/l 2 May 2025 |
| Perfluoropentanoic acid 8887 | River water | 1 | May 2025 – May 2025 | below 0.001 µg/l 2 May 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | May 2025 – May 2025 | below 0.006 µg/l 2 May 2025 |
| Perfluorotridecanoic acid 2955 | River water | 1 | May 2025 – May 2025 | below 0.005 µg/l 2 May 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | May 2025 – May 2025 | below 0.004 µg/l 2 May 2025 |
| Perfluoroundecanoic acid 8893 | River water | 1 | May 2025 – May 2025 | below 0.002 µg/l 2 May 2025 |
| Phosphorus, Total as P 0348 | River water | 22 | Jan 2024 – Dec 2025 | 0.056 mg/l 2 Dec 2025 |
| Potassium, Dissolved 0209 | River water | 3 | Apr 2025 – Oct 2025 | 5 mg/l 6 Oct 2025 |
| Preparation: DNA 5923 | River water | 3 | May 2024 – Oct 2024 | Done 21 Oct 2024 |
| Silica, reactive as SiO2 0182 | River water | 23 | Jan 2024 – Dec 2025 | 6 mg/l 2 Dec 2025 |
| Sodium, Dissolved 0205 | River water | 3 | Apr 2025 – Oct 2025 | 14 mg/l 6 Oct 2025 |
| Solids, Suspended at 105 C 0135 | River water | 23 | Jan 2024 – Dec 2025 | 6.1 mg/l 2 Dec 2025 |
| Strontium, Filtered 6693 | River water | 3 | Apr 2025 – Oct 2025 | 92 µg/l 6 Oct 2025 |
| Sulphate, Dissolved as SO4 7859 | River water | 3 | Apr 2025 – Oct 2025 | 43 mg/l 6 Oct 2025 |
| Zinc : BLM Bioavailable 4822 | River water | 2 | Apr 2025 – Jul 2025 | 0.6 µg/l 2 Jul 2025 |
| Zinc, Dissolved 3408 | River water | 3 | Apr 2025 – Oct 2025 | 1.7 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.