Foss at Stead's Tannery downstream of sewage treatment works
EA name: FOSS AT STEAD'S TANNERY D/S STW
Environment Agency sampling point NE-49100400 · 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
- 15 Jul 2026, 11:583 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 25 since 30 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 463289, 460982As published, to the nearest 1 m. Open in a map
- River, by its own name
- Foss
- River, by the map
- River FossPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Huntington On the River Foss · 9.7 km along the river
- Nearest gauge upstream
- West Lilling On the River Foss · 4.1 km along the river
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Environmental monitoring statutory (EU directives) (3 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
112.3%
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:02 | 112.3 | 112.3% |
| 6 Feb 2025, 10:18 | 95.4 | 95.4% |
| 20 Jan 2025, 10:51 | 93.2 | 93.2% |
| 4 Dec 2024, 11:35 | 94.1 | 94.1% |
| 19 Nov 2024, 09:57 | 91.8 | 91.8% |
| 21 Oct 2024, 15:07 | 85 | 85% |
| 27 Sep 2024, 10:25 | 76.2 | 76.2% |
| 19 Aug 2024, 12:32 | 115.4 | 115.4% |
| 15 Jul 2024, 10:29 | 90.3 | 90.3% |
| 19 Jun 2024, 10:39 | 90.8 | 90.8% |
| 20 May 2024, 14:48 | 123.8 | 123.8% |
| 17 Apr 2024, 12:47 | 100.4 | 100.4% |
| 19 Mar 2024, 10:34 | 94 | 94% |
| 20 Feb 2024, 09:55 | 94.2 | 94.2% |
| 24 Jan 2024, 11:26 | 94.6 | 94.6% |
| 4 Dec 2023, 14:30 | 91.9 | 91.9% |
| 29 Nov 2023, 13:06 | 92.9 | 92.9% |
| 30 Oct 2023, 14:59 | 73.2 | 73.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
13.2 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:02 | 13.2 | 13.2 mg/l |
| 6 Feb 2025, 10:18 | 13 | 13 mg/l |
| 20 Jan 2025, 10:51 | 12.3 | 12.3 mg/l |
| 4 Dec 2024, 11:35 | 11.9 | 11.9 mg/l |
| 19 Nov 2024, 09:57 | 12.2 | 12.2 mg/l |
| 21 Oct 2024, 15:07 | 9.16 | 9.16 mg/l |
| 27 Sep 2024, 10:25 | 8.25 | 8.25 mg/l |
| 19 Aug 2024, 12:32 | 11.4 | 11.4 mg/l |
| 15 Jul 2024, 10:29 | 9.12 | 9.12 mg/l |
| 19 Jun 2024, 10:39 | 9.35 | 9.35 mg/l |
| 20 May 2024, 14:48 | 11.9 | 11.9 mg/l |
| 17 Apr 2024, 12:47 | 11.8 | 11.8 mg/l |
| 19 Mar 2024, 10:34 | 10.6 | 10.6 mg/l |
| 20 Feb 2024, 09:55 | 11.3 | 11.3 mg/l |
| 24 Jan 2024, 11:26 | 11.5 | 11.5 mg/l |
| 4 Dec 2023, 14:30 | 11.6 | 11.6 mg/l |
| 29 Nov 2023, 13:06 | 11.8 | 11.8 mg/l |
| 30 Oct 2023, 14:59 | 8.11 | 8.11 mg/l |
Water temperature
code 0076 · °C
8.1 °C
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:02 | 8.1 | 8.1 °C |
| 6 Feb 2025, 10:18 | 2.4 | 2.4 °C |
| 20 Jan 2025, 10:51 | 3.6 | 3.6 °C |
| 4 Dec 2024, 11:35 | 5.3 | 5.3 °C |
| 19 Nov 2024, 09:57 | 3.4 | 3.4 °C |
| 21 Oct 2024, 15:07 | 11.9 | 11.9 °C |
| 27 Sep 2024, 10:25 | 11.7 | 11.7 °C |
| 19 Aug 2024, 12:32 | 15.9 | 15.9 °C |
| 15 Jul 2024, 10:29 | 14.8 | 14.8 °C |
| 19 Jun 2024, 10:39 | 13.9 | 13.9 °C |
| 20 May 2024, 14:48 | 17.3 | 17.3 °C |
| 17 Apr 2024, 12:47 | 8.3 | 8.3 °C |
| 19 Mar 2024, 10:34 | 9.9 | 9.9 °C |
| 20 Feb 2024, 09:55 | 7.5 | 7.5 °C |
| 24 Jan 2024, 11:26 | 6.8 | 6.8 °C |
| 4 Dec 2023, 14:30 | 5.3 | 5.3 °C |
| 29 Nov 2023, 13:06 | 5.2 | 5.2 °C |
| 30 Oct 2023, 14:59 | 10.7 | 10.7 °C |
pH
code 0061
7.29
Sampled 15 Jul 2026, 3 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jul 2026, 11:58 | 7.29 | 7.29 |
| 30 Apr 2026, 14:10 | 8.57 | 8.57 |
| 9 Jan 2026, 10:14 | 8.01 | 8.01 |
| 6 Oct 2025, 11:18 | 7.91 | 7.91 |
| 8 Jul 2025, 09:19 | 7.28 | 7.28 |
| 2 Apr 2025, 09:15 | 8.07 | 8.07 |
| 10 Mar 2025, 13:02 | 8.16 | 8.16 |
| 6 Feb 2025, 10:18 | 8.08 | 8.08 |
| 20 Jan 2025, 10:51 | 7.98 | 7.98 |
| 4 Dec 2024, 11:35 | 7.97 | 7.97 |
| 19 Nov 2024, 09:57 | 8.2 | 8.2 |
| 21 Oct 2024, 15:07 | 7.83 | 7.83 |
| 27 Sep 2024, 10:25 | 7.55 | 7.55 |
| 19 Aug 2024, 12:32 | 8.24 | 8.24 |
| 15 Jul 2024, 10:29 | 7.96 | 7.96 |
| 19 Jun 2024, 10:39 | 8.05 | 8.05 |
| 20 May 2024, 14:48 | 8.23 | 8.23 |
| 17 Apr 2024, 12:47 | 8.1 | 8.1 |
| 11 Apr 2024, 10:55 | 7.76 | 7.76 |
| 19 Mar 2024, 10:34 | 8.05 | 8.05 |
| 20 Feb 2024, 09:55 | 7.73 | 7.73 |
| 24 Jan 2024, 11:26 | 8 | 8 |
| 4 Dec 2023, 14:30 | 7.63 | 7.63 |
| 29 Nov 2023, 13:06 | 7.88 | 7.88 |
| 30 Oct 2023, 14:59 | 7.29 | 7.29 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.28 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:02 | 0.28 | 0.28 mg/l |
| 6 Feb 2025, 10:18 | 0.12 | 0.12 mg/l |
| 20 Jan 2025, 10:51 | 0.15 | 0.15 mg/l |
| 4 Dec 2024, 11:35 | 0.071 | 0.071 mg/l |
| 19 Nov 2024, 09:57 | 0.094 | 0.094 mg/l |
| 21 Oct 2024, 15:07 | 0.25 | 0.25 mg/l |
| 27 Sep 2024, 10:25 | 0.12 | 0.12 mg/l |
| 19 Aug 2024, 12:32 | 0.033 | 0.033 mg/l |
| 15 Jul 2024, 10:29 | 0.12 | 0.12 mg/l |
| 19 Jun 2024, 10:39 | 0.1 | 0.1 mg/l |
| 20 May 2024, 14:48 | 0.18 | 0.18 mg/l |
| 17 Apr 2024, 12:47 | 0.13 | 0.13 mg/l |
| 19 Mar 2024, 10:34 | 0.13 | 0.13 mg/l |
| 20 Feb 2024, 09:55 | 0.23 | 0.23 mg/l |
| 24 Jan 2024, 11:26 | 0.22 | 0.22 mg/l |
| 4 Dec 2023, 14:30 | 0.2 | 0.2 mg/l |
| 29 Nov 2023, 13:06 | 0.1 | 0.1 mg/l |
| 30 Oct 2023, 14:59 | 0.073 | 0.073 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.94 mg/l
Sampled 10 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:02 | 9.94 | 9.94 mg/l |
| 6 Feb 2025, 10:18 | 8.37 | 8.37 mg/l |
| 20 Jan 2025, 10:51 | 8.36 | 8.36 mg/l |
| 4 Dec 2024, 11:35 | 9.97 | 9.97 mg/l |
| 19 Nov 2024, 09:57 | 8.46 | 8.46 mg/l |
| 21 Oct 2024, 15:07 | 9.93 | 9.93 mg/l |
| 27 Sep 2024, 10:25 | 16.9 | 16.9 mg/l |
| 19 Aug 2024, 12:32 | 12.8 | 12.8 mg/l |
| 15 Jul 2024, 10:29 | 6.04 | 6.04 mg/l |
| 19 Jun 2024, 10:39 | 6.14 | 6.14 mg/l |
| 20 May 2024, 14:48 | 11.9 | 11.9 mg/l |
| 17 Apr 2024, 12:47 | 7.46 | 7.46 mg/l |
| 19 Mar 2024, 10:34 | 6.26 | 6.26 mg/l |
| 20 Feb 2024, 09:55 | 6.16 | 6.16 mg/l |
| 4 Dec 2023, 14:30 | 4.67 | 4.67 mg/l |
| 29 Nov 2023, 13:06 | 9.37 | 9.37 mg/l |
| 30 Oct 2023, 14:59 | 7.37 | 7.37 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.094 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:02 | 0.094 | 0.094 mg/l |
| 6 Feb 2025, 10:18 | 0.064 | 0.064 mg/l |
| 20 Jan 2025, 10:51 | 0.064 | 0.064 mg/l |
| 4 Dec 2024, 11:35 | 0.072 | 0.072 mg/l |
| 19 Nov 2024, 09:57 | 0.13 | 0.13 mg/l |
| 21 Oct 2024, 15:07 | 0.1 | 0.1 mg/l |
| 27 Sep 2024, 10:25 | 0.21 | 0.21 mg/l |
| 19 Aug 2024, 12:32 | 0.22 | 0.22 mg/l |
| 15 Jul 2024, 10:29 | 0.15 | 0.15 mg/l |
| 19 Jun 2024, 10:39 | 0.14 | 0.14 mg/l |
| 20 May 2024, 14:48 | 0.16 | 0.16 mg/l |
| 17 Apr 2024, 12:47 | 0.13 | 0.13 mg/l |
| 19 Mar 2024, 10:34 | 0.069 | 0.069 mg/l |
| 20 Feb 2024, 09:55 | 0.074 | 0.074 mg/l |
| 24 Jan 2024, 11:26 | 0.053 | 0.053 mg/l |
| 4 Dec 2023, 14:30 | 0.096 | 0.096 mg/l |
| 29 Nov 2023, 13:06 | 0.063 | 0.063 mg/l |
| 30 Oct 2023, 14:59 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
835 µS/cm
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 13:02 | 835 | 835 µS/cm |
| 6 Feb 2025, 10:18 | 795 | 795 µS/cm |
| 20 Jan 2025, 10:51 | 806 | 806 µS/cm |
| 4 Dec 2024, 11:35 | 826 | 826 µS/cm |
| 19 Nov 2024, 09:57 | 871 | 871 µS/cm |
| 21 Oct 2024, 15:07 | 688 | 688 µS/cm |
| 27 Sep 2024, 10:25 | 625 | 625 µS/cm |
| 19 Aug 2024, 12:32 | 813 | 813 µS/cm |
| 15 Jul 2024, 10:29 | 724 | 724 µS/cm |
| 19 Jun 2024, 10:39 | 701 | 701 µS/cm |
| 20 May 2024, 14:48 | 812 | 812 µS/cm |
| 17 Apr 2024, 12:47 | 726 | 726 µS/cm |
| 19 Mar 2024, 10:34 | 727 | 727 µS/cm |
| 20 Feb 2024, 09:55 | 677 | 677 µS/cm |
| 24 Jan 2024, 11:26 | 658 | 658 µS/cm |
| 4 Dec 2023, 14:30 | 522 | 522 µS/cm |
| 29 Nov 2023, 13:06 | 725 | 725 µS/cm |
| 30 Oct 2023, 14:59 | 491 | 491 µS/cm |
Everything measured here
62 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 62 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 18 | Oct 2023 – Mar 2025 | 112.3% 10 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – Mar 2025 | 13.2 mg/l 10 Mar 2025 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – Mar 2025 | 8.1 °C 10 Mar 2025 |
| pH 0061 | River water | 25 | Oct 2023 – Jul 2026 | 7.29 15 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – Mar 2025 | 0.28 mg/l 10 Mar 2025 |
| Nitrate as N 0117 | River water | 17 | Oct 2023 – Mar 2025 | 9.94 mg/l 10 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – Mar 2025 | 0.094 mg/l 10 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – Mar 2025 | 835 µS/cm 10 Mar 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 4 Dec 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Dec 2024 – Dec 2024 | below 0.004 µg/l 4 Dec 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 4 Dec 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Dec 2024 – Dec 2024 | 0.0016 µg/l 4 Dec 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Oct 2023 – Mar 2025 | 230 mg/l 10 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – Mar 2025 | 0.00444 mg/l 10 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | below 2 mg/l 10 Mar 2025 |
| Calcium, Dissolved 0239 | River water | 13 | Oct 2023 – Jul 2026 | 110 mg/l 15 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 13 | Oct 2023 – Jul 2026 | 8.4 mg/l 15 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| Iron, Dissolved 6460 | River water | 13 | Oct 2023 – Jul 2026 | below 30 µg/l 15 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 13 | Oct 2023 – Jul 2026 | 15 mg/l 15 Jul 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 4 Dec 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 4 Dec 2024 |
| Nitrite as N 0118 | River water | 17 | Oct 2023 – Mar 2025 | 0.058 mg/l 10 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – Mar 2025 | 10 mg/l 10 Mar 2025 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 4 Dec 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 4 Dec 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 4 Dec 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 4 Dec 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Dec 2024 – Dec 2024 | 0.00067 µg/l 4 Dec 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 4 Dec 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Dec 2024 – Dec 2024 | 0.00073 µg/l 4 Dec 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 4 Dec 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 4 Dec 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Dec 2024 – Dec 2024 | below 0.006 µg/l 4 Dec 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 4 Dec 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Dec 2024 – Dec 2024 | below 0.004 µg/l 4 Dec 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 4 Dec 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.