Marshaw Wyre above the confluence with Abbeystead Reservoir
EA name: MARSHAW WYRE PTC ABBEYSTEAD RESERVOIR
Environment Agency sampling point NW-88003818 · 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 May 2026, 10:535 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
- 23 since 16 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 356491, 454207As published, to the nearest 1 m. Open in a map
- River, by its own name
- Marshaw Wyre
- River, by the map
- Marshaw WyrePlaced on the river its name gives, 15 m from the line.
- Next gauge downstream
- Abbeystead Reservoir On the River Wyre · 1.0 km along the river
- Why it was sampled
- Monitoring (national agency policy) (23 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
103.7%
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 10:53 | 103.7 | 103.7% |
| 15 Apr 2026, 10:52 | 101.4 | 101.4% |
| 17 Mar 2026, 11:18 | 101.4 | 101.4% |
| 17 Feb 2026, 10:55 | 98.6 | 98.6% |
| 27 Jan 2026, 12:19 | 99.4 | 99.4% |
| 6 Mar 2025, 09:25 | 104.6 | 104.6% |
| 17 Feb 2025, 09:20 | 102.3 | 102.3% |
| 20 Jan 2025, 10:21 | 101.5 | 101.5% |
| 3 Dec 2024, 10:09 | 104.3 | 104.3% |
| 18 Nov 2024, 10:52 | 102.7 | 102.7% |
| 17 Oct 2024, 10:21 | 102.6 | 102.6% |
| 16 Sep 2024, 11:39 | 79.9 | 79.9% |
| 21 Aug 2024, 14:57 | 101.1 | 101.1% |
| 18 Jul 2024, 10:14 | 101.4 | 101.4% |
| 20 Jun 2024, 10:59 | 97.1 | 97.1% |
| 23 May 2024, 11:19 | 100.9 | 100.9% |
| 16 Apr 2024, 09:14 | 100.7 | 100.7% |
| 20 Mar 2024, 10:25 | 101.6 | 101.6% |
| 22 Feb 2024, 10:01 | 102.4 | 102.4% |
| 22 Jan 2024, 11:45 | 101.6 | 101.6% |
| 4 Dec 2023, 14:39 | 101.2 | 101.2% |
| 27 Nov 2023, 09:44 | 101.5 | 101.5% |
| 16 Oct 2023, 12:53 | 91.8 | 91.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.1 mg/l
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 10:53 | 12.1 | 12.1 mg/l |
| 15 Apr 2026, 10:52 | 11.3 | 11.3 mg/l |
| 17 Mar 2026, 11:18 | 11.8 | 11.8 mg/l |
| 17 Feb 2026, 10:55 | 13 | 13 mg/l |
| 27 Jan 2026, 12:19 | 12.8 | 12.8 mg/l |
| 6 Mar 2025, 09:25 | 13.3 | 13.3 mg/l |
| 17 Feb 2025, 09:20 | 13.9 | 13.9 mg/l |
| 20 Jan 2025, 10:21 | 13 | 13 mg/l |
| 3 Dec 2024, 10:09 | 13.2 | 13.2 mg/l |
| 18 Nov 2024, 10:52 | 13.2 | 13.2 mg/l |
| 17 Oct 2024, 10:21 | 11.4 | 11.4 mg/l |
| 16 Sep 2024, 11:39 | 8.77 | 8.77 mg/l |
| 21 Aug 2024, 14:57 | 10.6 | 10.6 mg/l |
| 18 Jul 2024, 10:14 | 10.3 | 10.3 mg/l |
| 20 Jun 2024, 10:59 | 10.4 | 10.4 mg/l |
| 23 May 2024, 11:19 | 11 | 11 mg/l |
| 16 Apr 2024, 09:14 | 12.3 | 12.3 mg/l |
| 20 Mar 2024, 10:25 | 11.8 | 11.8 mg/l |
| 22 Feb 2024, 10:01 | 12.4 | 12.4 mg/l |
| 22 Jan 2024, 11:45 | 12.7 | 12.7 mg/l |
| 4 Dec 2023, 14:39 | 12.9 | 12.9 mg/l |
| 27 Nov 2023, 09:44 | 12.5 | 12.5 mg/l |
| 16 Oct 2023, 12:53 | 10.8 | 10.8 mg/l |
Water temperature
code 0076 · °C
8.6 °C
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 10:53 | 8.6 | 8.6 °C |
| 15 Apr 2026, 10:52 | 10.5 | 10.5 °C |
| 17 Mar 2026, 11:18 | 8.7 | 8.7 °C |
| 17 Feb 2026, 10:55 | 3.6 | 3.6 °C |
| 27 Jan 2026, 12:19 | 4.6 | 4.6 °C |
| 6 Mar 2025, 09:25 | 5 | 5 °C |
| 17 Feb 2025, 09:20 | 2.6 | 2.6 °C |
| 20 Jan 2025, 10:21 | 4.7 | 4.7 °C |
| 3 Dec 2024, 10:09 | 5.2 | 5.2 °C |
| 18 Nov 2024, 10:52 | 4.8 | 4.8 °C |
| 17 Oct 2024, 10:21 | 10.7 | 10.7 °C |
| 16 Sep 2024, 11:39 | 11.1 | 11.1 °C |
| 21 Aug 2024, 14:57 | 13.1 | 13.1 °C |
| 18 Jul 2024, 10:14 | 14.6 | 14.6 °C |
| 20 Jun 2024, 10:59 | 12.1 | 12.1 °C |
| 23 May 2024, 11:19 | 11.3 | 11.3 °C |
| 16 Apr 2024, 09:14 | 6.6 | 6.6 °C |
| 20 Mar 2024, 10:25 | 8.6 | 8.6 °C |
| 22 Feb 2024, 10:01 | 7.1 | 7.1 °C |
| 22 Jan 2024, 11:45 | 5.9 | 5.9 °C |
| 4 Dec 2023, 14:39 | 5.1 | 5.1 °C |
| 27 Nov 2023, 09:44 | 6.4 | 6.4 °C |
| 16 Oct 2023, 12:53 | 8.1 | 8.1 °C |
pH
code 0061
8.32
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 10:53 | 8.32 | 8.32 |
| 15 Apr 2026, 10:52 | 7.84 | 7.84 |
| 17 Mar 2026, 11:18 | 7.74 | 7.74 |
| 17 Feb 2026, 10:55 | 8.16 | 8.16 |
| 27 Jan 2026, 12:19 | 7.95 | 7.95 |
| 6 Mar 2025, 09:25 | 8.11 | 8.11 |
| 17 Feb 2025, 09:20 | 7.95 | 7.95 |
| 20 Jan 2025, 10:21 | 7.62 | 7.62 |
| 3 Dec 2024, 10:09 | 7.68 | 7.68 |
| 18 Nov 2024, 10:52 | 7.62 | 7.62 |
| 17 Oct 2024, 10:21 | 7.03 | 7.03 |
| 16 Sep 2024, 11:39 | 7.53 | 7.53 |
| 21 Aug 2024, 14:57 | 8.12 | 8.12 |
| 18 Jul 2024, 10:14 | 8.01 | 8.01 |
| 20 Jun 2024, 10:59 | 7.23 | 7.23 |
| 23 May 2024, 11:19 | 7.12 | 7.12 |
| 16 Apr 2024, 09:14 | 7.33 | 7.33 |
| 20 Mar 2024, 10:25 | 7.51 | 7.51 |
| 22 Feb 2024, 10:01 | 7.01 | 7.01 |
| 22 Jan 2024, 11:45 | 7.03 | 7.03 |
| 4 Dec 2023, 14:39 | 7.82 | 7.82 |
| 27 Nov 2023, 09:44 | 7.39 | 7.39 |
| 16 Oct 2023, 12:53 | 7.96 | 7.96 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.002 mg/l (not detected above this)
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 10:53 | <0.002 | below 0.002 mg/l (not detected above this) |
| 15 Apr 2026, 10:52 | <0.002 | below 0.002 mg/l (not detected above this) |
| 17 Mar 2026, 11:18 | <0.002 | below 0.002 mg/l (not detected above this) |
| 17 Feb 2026, 10:55 | 0.0032 | 0.0032 mg/l |
| 27 Jan 2026, 12:19 | 0.012 | 0.012 mg/l |
| 6 Mar 2025, 09:25 | <0.002 | below 0.002 mg/l (not detected above this) |
| 17 Feb 2025, 09:20 | 0.0032 | 0.0032 mg/l |
| 20 Jan 2025, 10:21 | 0.0026 | 0.0026 mg/l |
| 3 Dec 2024, 10:09 | 0.0026 | 0.0026 mg/l |
| 18 Nov 2024, 10:52 | <0.002 | below 0.002 mg/l (not detected above this) |
| 17 Oct 2024, 10:21 | 0.0074 | 0.0074 mg/l |
| 16 Sep 2024, 11:39 | 0.0079 | 0.0079 mg/l |
| 21 Aug 2024, 14:57 | 0.0021 | 0.0021 mg/l |
| 18 Jul 2024, 10:14 | 0.0049 | 0.0049 mg/l |
| 20 Jun 2024, 10:59 | 0.007 | 0.007 mg/l |
| 23 May 2024, 11:19 | 0.0096 | 0.0096 mg/l |
| 16 Apr 2024, 09:14 | <0.002 | below 0.002 mg/l (not detected above this) |
| 20 Mar 2024, 10:25 | 0.018 | 0.018 mg/l |
| 22 Feb 2024, 10:01 | 0.011 | 0.011 mg/l |
| 22 Jan 2024, 11:45 | 0.0086 | 0.0086 mg/l |
| 4 Dec 2023, 14:39 | 0.0068 | 0.0068 mg/l |
| 27 Nov 2023, 09:44 | 0.03 | 0.03 mg/l |
| 16 Oct 2023, 12:53 | 0.015 | 0.015 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.109 mg/l
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 10:53 | 0.109 | 0.109 mg/l |
| 15 Apr 2026, 10:52 | 0.129 | 0.129 mg/l |
| 17 Mar 2026, 11:18 | 0.259 | 0.259 mg/l |
| 17 Feb 2026, 10:55 | 0.379 | 0.379 mg/l |
| 27 Jan 2026, 12:19 | 0.398 | 0.398 mg/l |
| 6 Mar 2025, 09:25 | 0.289 | 0.289 mg/l |
| 17 Feb 2025, 09:20 | 0.369 | 0.369 mg/l |
| 20 Jan 2025, 10:21 | 0.439 | 0.439 mg/l |
| 3 Dec 2024, 10:09 | 0.279 | 0.279 mg/l |
| 18 Nov 2024, 10:52 | 0.169 | 0.169 mg/l |
| 17 Oct 2024, 10:21 | 0.129 | 0.129 mg/l |
| 16 Sep 2024, 11:39 | 0.093 | 0.093 mg/l |
| 21 Aug 2024, 14:57 | 0.129 | 0.129 mg/l |
| 18 Jul 2024, 10:14 | 0.219 | 0.219 mg/l |
| 20 Jun 2024, 10:59 | 0.084 | 0.084 mg/l |
| 23 May 2024, 11:19 | 0.098 | 0.098 mg/l |
| 16 Apr 2024, 09:14 | 0.084 | 0.084 mg/l |
| 20 Mar 2024, 10:25 | 0.199 | 0.199 mg/l |
| 22 Feb 2024, 10:01 | 0.209 | 0.209 mg/l |
| 22 Jan 2024, 11:45 | 0.449 | 0.449 mg/l |
| 4 Dec 2023, 14:39 | 0.349 | 0.349 mg/l |
| 27 Nov 2023, 09:44 | 0.338 | 0.338 mg/l |
| 16 Oct 2023, 12:53 | 0.219 | 0.219 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.001 mg/l (not detected above this)
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 10:53 | <0.001 | below 0.001 mg/l (not detected above this) |
| 15 Apr 2026, 10:52 | 0.0044 | 0.0044 mg/l |
| 17 Mar 2026, 11:18 | 0.0087 | 0.0087 mg/l |
| 17 Feb 2026, 10:55 | 0.0049 | 0.0049 mg/l |
| 27 Jan 2026, 12:19 | 0.013 | 0.013 mg/l |
| 6 Mar 2025, 09:25 | 0.0028 | 0.0028 mg/l |
| 17 Feb 2025, 09:20 | 0.0039 | 0.0039 mg/l |
| 20 Jan 2025, 10:21 | 0.0051 | 0.0051 mg/l |
| 3 Dec 2024, 10:09 | 0.0088 | 0.0088 mg/l |
| 18 Nov 2024, 10:52 | 0.0098 | 0.0098 mg/l |
| 17 Oct 2024, 10:21 | 0.014 | 0.014 mg/l |
| 16 Sep 2024, 11:39 | 0.0087 | 0.0087 mg/l |
| 21 Aug 2024, 14:57 | 0.0091 | 0.0091 mg/l |
| 18 Jul 2024, 10:14 | 0.0041 | 0.0041 mg/l |
| 20 Jun 2024, 10:59 | 0.0048 | 0.0048 mg/l |
| 23 May 2024, 11:19 | 0.018 | 0.018 mg/l |
| 16 Apr 2024, 09:14 | 0.0042 | 0.0042 mg/l |
| 20 Mar 2024, 10:25 | 0.01 | 0.01 mg/l |
| 22 Feb 2024, 10:01 | 0.012 | 0.012 mg/l |
| 22 Jan 2024, 11:45 | 0.0065 | 0.0065 mg/l |
| 4 Dec 2023, 14:39 | 0.0076 | 0.0076 mg/l |
| 27 Nov 2023, 09:44 | 0.0098 | 0.0098 mg/l |
| 16 Oct 2023, 12:53 | 0.011 | 0.011 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
115 µS/cm
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 10:53 | 115 | 115 µS/cm |
| 15 Apr 2026, 10:52 | 61 | 61 µS/cm |
| 17 Mar 2026, 11:18 | 62 | 62 µS/cm |
| 17 Feb 2026, 10:55 | 79 | 79 µS/cm |
| 27 Jan 2026, 12:19 | 96 | 96 µS/cm |
| 6 Mar 2025, 09:25 | 111 | 111 µS/cm |
| 17 Feb 2025, 09:20 | 124 | 124 µS/cm |
| 20 Jan 2025, 10:21 | 89 | 89 µS/cm |
| 3 Dec 2024, 10:09 | 66 | 66 µS/cm |
| 18 Nov 2024, 10:52 | 72 | 72 µS/cm |
| 17 Oct 2024, 10:21 | 39 | 39 µS/cm |
| 16 Sep 2024, 11:39 | 68 | 68 µS/cm |
| 21 Aug 2024, 14:57 | 87 | 87 µS/cm |
| 18 Jul 2024, 10:14 | 114 | 114 µS/cm |
| 20 Jun 2024, 10:59 | 97 | 97 µS/cm |
| 23 May 2024, 11:19 | 33 | 33 µS/cm |
| 16 Apr 2024, 09:14 | 56 | 56 µS/cm |
| 20 Mar 2024, 10:25 | 64 | 64 µS/cm |
| 22 Feb 2024, 10:01 | 41 | 41 µS/cm |
| 22 Jan 2024, 11:45 | 60 | 60 µS/cm |
| 4 Dec 2023, 14:39 | 114 | 114 µS/cm |
| 27 Nov 2023, 09:44 | 109 | 109 µS/cm |
| 16 Oct 2023, 12:53 | 99 | 99 µS/cm |
Everything measured here
60 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 60 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Oct 2023 – May 2026 | 103.7% 5 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – May 2026 | 12.1 mg/l 5 May 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – May 2026 | 8.6 °C 5 May 2026 |
| pH 0061 | River water | 23 | Oct 2023 – May 2026 | 8.32 5 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – May 2026 | below 0.002 mg/l 5 May 2026 |
| Nitrate as N 0117 | River water | 23 | Oct 2023 – May 2026 | 0.109 mg/l 5 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Oct 2023 – May 2026 | below 0.001 mg/l 5 May 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – May 2026 | 115 µS/cm 5 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 18 Nov 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Oct 2023 – May 2026 | 38 mg/l 5 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Oct 2023 – May 2026 | below 0.00003 mg/l 5 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 19 | Feb 2024 – May 2026 | 1.8 mg/l 5 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Nitrite as N 0118 | River water | 23 | Oct 2023 – May 2026 | below 0.001 mg/l 5 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Oct 2023 – May 2026 | 0.11 mg/l 5 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Nov 2024 – Nov 2024 | 0.0061 µg/l 18 Nov 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Nov 2024 – Nov 2024 | below 0.006 µg/l 18 Nov 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 18 Nov 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 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.