River Etherow below Bottoms Reservoir
EA name: RIVER ETHEROW BELOW BOTTOMS RESERVOIR
Environment Agency sampling point NW-88001818 · 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
- 10 Jul 2026, 13:003 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 25 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 Monitoring (national agency policy)
- Where
- National Grid 402054, 396961As published, to the nearest 1 m. Open in a map
- River, by its own name
- Etherow
- River, by the map
- River EtherowPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Woolley Bridge On the River Etherow · 1.7 km along the river
- Why it was sampled
- Monitoring (national agency policy) (23 samples)
Environmental monitoring statutory (EU directives) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
104.9%
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:24 | 104.9 | 104.9% |
| 5 Feb 2025, 11:42 | 101.4 | 101.4% |
| 21 Jan 2025, 12:17 | 102.4 | 102.4% |
| 9 Dec 2024, 12:26 | 102.7 | 102.7% |
| 20 Nov 2024, 12:42 | 100 | 100% |
| 31 Oct 2024, 12:41 | 101.1 | 101.1% |
| 15 Oct 2024, 11:59 | 101.9 | 101.9% |
| 21 Aug 2024, 08:44 | 99.8 | 99.8% |
| 18 Jul 2024, 12:04 | 99.9 | 99.9% |
| 20 Jun 2024, 10:31 | 102.2 | 102.2% |
| 13 May 2024, 12:04 | 102.1 | 102.1% |
| 17 Apr 2024, 11:47 | 102.8 | 102.8% |
| 22 Mar 2024, 10:10 | 101 | 101% |
| 21 Feb 2024, 10:26 | 102.7 | 102.7% |
| 26 Jan 2024, 08:45 | 100 | 100% |
| 15 Dec 2023, 10:29 | 100.5 | 100.5% |
| 20 Nov 2023, 09:33 | 101.8 | 101.8% |
| 24 Oct 2023, 11:57 | 100.2 | 100.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.7 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:24 | 12.7 | 12.7 mg/l |
| 5 Feb 2025, 11:42 | 13 | 13 mg/l |
| 21 Jan 2025, 12:17 | 13.2 | 13.2 mg/l |
| 9 Dec 2024, 12:26 | 12.6 | 12.6 mg/l |
| 20 Nov 2024, 12:42 | 11.8 | 11.8 mg/l |
| 31 Oct 2024, 12:41 | 11.1 | 11.1 mg/l |
| 15 Oct 2024, 11:59 | 11.3 | 11.3 mg/l |
| 21 Aug 2024, 08:44 | 9.8 | 9.8 mg/l |
| 18 Jul 2024, 12:04 | 9.79 | 9.79 mg/l |
| 20 Jun 2024, 10:31 | 10.3 | 10.3 mg/l |
| 13 May 2024, 12:04 | 10.9 | 10.9 mg/l |
| 17 Apr 2024, 11:47 | 11.7 | 11.7 mg/l |
| 22 Mar 2024, 10:10 | 11.9 | 11.9 mg/l |
| 21 Feb 2024, 10:26 | 12.3 | 12.3 mg/l |
| 26 Jan 2024, 08:45 | 12.8 | 12.8 mg/l |
| 15 Dec 2023, 10:29 | 12.6 | 12.6 mg/l |
| 20 Nov 2023, 09:33 | 11.9 | 11.9 mg/l |
| 24 Oct 2023, 11:57 | 10.9 | 10.9 mg/l |
Water temperature
code 0076 · °C
7.1 °C
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:24 | 7.1 | 7.1 °C |
| 5 Feb 2025, 11:42 | 4.7 | 4.7 °C |
| 21 Jan 2025, 12:17 | 4.6 | 4.6 °C |
| 9 Dec 2024, 12:26 | 6.6 | 6.6 °C |
| 20 Nov 2024, 12:42 | 8.2 | 8.2 °C |
| 31 Oct 2024, 12:41 | 11.2 | 11.2 °C |
| 15 Oct 2024, 11:59 | 10.7 | 10.7 °C |
| 21 Aug 2024, 08:44 | 16.1 | 16.1 °C |
| 18 Jul 2024, 12:04 | 16.2 | 16.2 °C |
| 20 Jun 2024, 10:31 | 14.9 | 14.9 °C |
| 13 May 2024, 12:04 | 12.2 | 12.2 °C |
| 17 Apr 2024, 11:47 | 9.5 | 9.5 °C |
| 22 Mar 2024, 10:10 | 8 | 8 °C |
| 21 Feb 2024, 10:26 | 7.4 | 7.4 °C |
| 26 Jan 2024, 08:45 | 4.8 | 4.8 °C |
| 15 Dec 2023, 10:29 | 5.8 | 5.8 °C |
| 20 Nov 2023, 09:33 | 8.6 | 8.6 °C |
| 24 Oct 2023, 11:57 | 11.4 | 11.4 °C |
pH
code 0061
7.4
Sampled 10 Jul 2026, 3 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:00 | 7.4 | 7.4 |
| 24 Apr 2026, 12:38 | 7.2 | 7.2 |
| 8 Jan 2026, 10:14 | 7.14 | 7.14 |
| 7 Oct 2025, 09:44 | 7.39 | 7.39 |
| 9 Jul 2025, 11:04 | 7.5 | 7.5 |
| 2 Apr 2025, 13:13 | 7.47 | 7.47 |
| 10 Mar 2025, 13:24 | 7.24 | 7.24 |
| 5 Feb 2025, 11:42 | 7.15 | 7.15 |
| 21 Jan 2025, 12:17 | 7.87 | 7.87 |
| 9 Dec 2024, 12:26 | 7.3 | 7.3 |
| 20 Nov 2024, 12:42 | 7.81 | 7.81 |
| 31 Oct 2024, 12:41 | 7.06 | 7.06 |
| 15 Oct 2024, 11:59 | 7.21 | 7.21 |
| 21 Aug 2024, 08:44 | 7.52 | 7.52 |
| 18 Jul 2024, 12:04 | 7.5 | 7.5 |
| 20 Jun 2024, 10:31 | 7.86 | 7.86 |
| 13 May 2024, 12:04 | 7.75 | 7.75 |
| 17 Apr 2024, 11:47 | 7.34 | 7.34 |
| 10 Apr 2024, 16:05 | 7.45 | 7.45 |
| 22 Mar 2024, 10:10 | 6.98 | 6.98 |
| 21 Feb 2024, 10:26 | 7.73 | 7.73 |
| 26 Jan 2024, 08:45 | 7.76 | 7.76 |
| 15 Dec 2023, 10:29 | 6.93 | 6.93 |
| 20 Nov 2023, 09:33 | 7.12 | 7.12 |
| 24 Oct 2023, 11:57 | 7.18 | 7.18 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.032 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:24 | 0.032 | 0.032 mg/l |
| 5 Feb 2025, 11:42 | 0.042 | 0.042 mg/l |
| 21 Jan 2025, 12:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Dec 2024, 12:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Nov 2024, 12:42 | 0.035 | 0.035 mg/l |
| 31 Oct 2024, 12:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Oct 2024, 11:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2024, 08:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jul 2024, 12:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jun 2024, 10:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2024, 12:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2024, 11:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Mar 2024, 10:10 | 0.014 | 0.014 mg/l |
| 21 Feb 2024, 10:26 | 0.012 | 0.012 mg/l |
| 26 Jan 2024, 08:45 | 0.017 | 0.017 mg/l |
| 15 Dec 2023, 10:29 | 0.016 | 0.016 mg/l |
| 20 Nov 2023, 09:33 | 0.011 | 0.011 mg/l |
| 24 Oct 2023, 11:57 | 0.015 | 0.015 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.506 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:24 | 0.506 | 0.506 mg/l |
| 5 Feb 2025, 11:42 | 0.566 | 0.566 mg/l |
| 21 Jan 2025, 12:17 | 0.496 | 0.496 mg/l |
| 9 Dec 2024, 12:26 | 0.446 | 0.446 mg/l |
| 20 Nov 2024, 12:42 | 0.396 | 0.396 mg/l |
| 31 Oct 2024, 12:41 | 0.436 | 0.436 mg/l |
| 15 Oct 2024, 11:59 | 0.326 | 0.326 mg/l |
| 21 Aug 2024, 08:44 | 0.286 | 0.286 mg/l |
| 18 Jul 2024, 12:04 | 0.356 | 0.356 mg/l |
| 20 Jun 2024, 10:31 | 0.406 | 0.406 mg/l |
| 13 May 2024, 12:04 | 0.406 | 0.406 mg/l |
| 17 Apr 2024, 11:47 | 0.426 | 0.426 mg/l |
| 22 Mar 2024, 10:10 | 0.409 | 0.409 mg/l |
| 21 Feb 2024, 10:26 | 0.449 | 0.449 mg/l |
| 26 Jan 2024, 08:45 | 0.369 | 0.369 mg/l |
| 15 Dec 2023, 10:29 | 0.299 | 0.299 mg/l |
| 20 Nov 2023, 09:33 | 0.239 | 0.239 mg/l |
| 24 Oct 2023, 11:57 | 0.258 | 0.258 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:24 | <0.01 | below 0.01 mg/l (not detected above this) |
| 5 Feb 2025, 11:42 | <0.01 | below 0.01 mg/l (not detected above this) |
| 21 Jan 2025, 12:17 | <0.01 | below 0.01 mg/l (not detected above this) |
| 9 Dec 2024, 12:26 | <0.01 | below 0.01 mg/l (not detected above this) |
| 20 Nov 2024, 12:42 | <0.01 | below 0.01 mg/l (not detected above this) |
| 31 Oct 2024, 12:41 | <0.01 | below 0.01 mg/l (not detected above this) |
| 15 Oct 2024, 11:59 | <0.01 | below 0.01 mg/l (not detected above this) |
| 21 Aug 2024, 08:44 | <0.01 | below 0.01 mg/l (not detected above this) |
| 18 Jul 2024, 12:04 | <0.01 | below 0.01 mg/l (not detected above this) |
| 20 Jun 2024, 10:31 | <0.01 | below 0.01 mg/l (not detected above this) |
| 13 May 2024, 12:04 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Apr 2024, 11:47 | <0.01 | below 0.01 mg/l (not detected above this) |
| 22 Mar 2024, 10:10 | 0.0043 | 0.0043 mg/l |
| 21 Feb 2024, 10:26 | 0.004 | 0.004 mg/l |
| 26 Jan 2024, 08:45 | 0.0032 | 0.0032 mg/l |
| 15 Dec 2023, 10:29 | 0.0045 | 0.0045 mg/l |
| 20 Nov 2023, 09:33 | 0.0055 | 0.0055 mg/l |
| 24 Oct 2023, 11:57 | 0.0047 | 0.0047 mg/l |
Turbidity
code 6396 · NTU
1.8 NTU
Sampled 22 Mar 2024, 2.5 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Mar 2024, 10:10 | 1.8 | 1.8 NTU |
| 21 Feb 2024, 10:26 | 2.3 | 2.3 NTU |
| 26 Jan 2024, 08:45 | 2.6 | 2.6 NTU |
| 15 Dec 2023, 10:29 | 2.3 | 2.3 NTU |
| 20 Nov 2023, 09:33 | 2.3 | 2.3 NTU |
| 24 Oct 2023, 11:57 | 5.3 | 5.3 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
69 µS/cm
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:24 | 69 | 69 µS/cm |
| 5 Feb 2025, 11:42 | 64 | 64 µS/cm |
| 21 Jan 2025, 12:17 | 84 | 84 µS/cm |
| 9 Dec 2024, 12:26 | 60 | 60 µS/cm |
| 20 Nov 2024, 12:42 | 65 | 65 µS/cm |
| 31 Oct 2024, 12:41 | 62 | 62 µS/cm |
| 15 Oct 2024, 11:59 | 64 | 64 µS/cm |
| 21 Aug 2024, 08:44 | 78 | 78 µS/cm |
| 18 Jul 2024, 12:04 | 67 | 67 µS/cm |
| 20 Jun 2024, 10:31 | 79 | 79 µS/cm |
| 13 May 2024, 12:04 | 65 | 65 µS/cm |
| 17 Apr 2024, 11:47 | 57 | 57 µS/cm |
| 22 Mar 2024, 10:10 | 57 | 57 µS/cm |
| 21 Feb 2024, 10:26 | 56 | 56 µS/cm |
| 26 Jan 2024, 08:45 | 55 | 55 µS/cm |
| 15 Dec 2023, 10:29 | 56 | 56 µS/cm |
| 20 Nov 2023, 09:33 | 50 | 50 µS/cm |
| 24 Oct 2023, 11:57 | 57 | 57 µS/cm |
Everything measured here
82 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 82 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 18 | Oct 2023 – Mar 2025 | 104.9% 10 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – Mar 2025 | 12.7 mg/l 10 Mar 2025 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – Mar 2025 | 7.1 °C 10 Mar 2025 |
| pH 0061 | River water | 25 | Oct 2023 – Jul 2026 | 7.4 10 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – Mar 2025 | 0.032 mg/l 10 Mar 2025 |
| Nitrate as N 0117 | River water | 18 | Oct 2023 – Mar 2025 | 0.506 mg/l 10 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – Mar 2025 | below 0.01 mg/l 10 Mar 2025 |
| Turbidity 6396 | River water | 6 | Oct 2023 – Mar 2024 | 1.8 NTU 22 Mar 2024 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – Mar 2025 | 69 µS/cm 10 Mar 2025 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Jan 2026 – Jan 2026 | below 0.002 µg/l 8 Jan 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Jul 2025 – Jan 2026 | below 0.004 µg/l 8 Jan 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 8 Jan 2026 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 8 Jan 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 8 Jan 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 8 Jan 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 8 Jan 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 8 Jan 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Oct 2023 – Mar 2025 | 10 mg/l 10 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – Mar 2025 | 0.00008 mg/l 10 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | 1.3 mg/l 10 Mar 2025 |
| Calcium, Dissolved 0239 | River water | 12 | Oct 2023 – Jul 2026 | 4.7 mg/l 10 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 11 | Oct 2023 – Jul 2026 | 4.9 mg/l 10 Jul 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 5 | Oct 2023 – Mar 2024 | 0.9 µg/l 22 Mar 2024 |
| Copper : BLM Bioavailable 4821 | River water | 11 | Oct 2023 – Jul 2026 | 0.06 µg/l 10 Jul 2026 |
| Copper, Dissolved 6450 | River water | 12 | Oct 2023 – Jul 2026 | 1.2 µg/l 10 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Iron, Dissolved 6460 | River water | 12 | Oct 2023 – Jul 2026 | 370 µg/l 10 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 12 | Oct 2023 – Jul 2026 | 2.3 mg/l 10 Jul 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Jul 2025 – Jan 2026 | below 0.002 µg/l 8 Jan 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Jul 2025 – Jan 2026 | below 0.002 µg/l 8 Jan 2026 |
| Nitrite as N 0118 | River water | 18 | Oct 2023 – Mar 2025 | below 0.004 mg/l 10 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – Mar 2025 | 0.51 mg/l 10 Mar 2025 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Perfluorobutanoic acid 2995 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Perfluorodecanoic acid 8892 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Jul 2025 – Jan 2026 | below 0.005 µg/l 8 Jan 2026 |
| Perfluorododecanoic acid 8894 | River water | 2 | Jul 2025 – Jan 2026 | below 0.002 µg/l 8 Jan 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorohexanoic acid 8888 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorononanoic acid 8891 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Jul 2025 – Jan 2026 | below 0.002 µg/l 8 Jan 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Perfluorooctanoic acid 8890 | River water | 2 | Jul 2025 – Jan 2026 | 0.00079 µg/l 8 Jan 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | Jul 2025 – Jan 2026 | below 0.0005 µg/l 8 Jan 2026 |
| Perfluoropentanoic acid 8887 | River water | 2 | Jul 2025 – Jan 2026 | 0.0012 µg/l 8 Jan 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Jul 2025 – Jan 2026 | below 0.006 µg/l 8 Jan 2026 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Jul 2025 – Jan 2026 | below 0.002 µg/l 8 Jan 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Jul 2025 – Jan 2026 | below 0.004 µg/l 8 Jan 2026 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Jul 2025 – Jan 2026 | below 0.001 µg/l 8 Jan 2026 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Oct 2023 – Mar 2024 | below 3 mg/l 22 Mar 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.