River Avon Lower 200 m downstream of Tewkesbury sewage treatment works
EA name: RIVER AVON LOWER 200 M DS TEWKESBURY STW
Environment Agency sampling point MD-04766040 · 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
- 30 Jul 2026, 09:342 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 24 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 388000, 231710As published, to the nearest 10 m. Open in a map
- River, by its own name
- Avon Lower
- River, by the map
- Not placedTwo watercourses within reach (25 m and 58 m) and no name to choose by. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Environmental monitoring statutory (EU directives) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
81.4%
Sampled 27 May 2026, 4 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 09:59 | 81.4 | 81.4% |
| 27 Mar 2026, 13:00 | 101.5 | 101.5% |
| 7 Jan 2026, 14:52 | 100.8 | 100.8% |
| 6 Mar 2025, 08:26 | 98.9 | 98.9% |
| 20 Feb 2025, 08:56 | 102.1 | 102.1% |
| 27 Jan 2025, 14:11 | 96.4 | 96.4% |
| 4 Dec 2024, 11:08 | 85.8 | 85.8% |
| 20 Nov 2024, 14:06 | 98.8 | 98.8% |
| 15 Oct 2024, 12:12 | 90.2 | 90.2% |
| 30 Sep 2024, 14:05 | 81.5 | 81.5% |
| 19 Aug 2024, 13:33 | 91.9 | 91.9% |
| 18 Jul 2024, 14:31 | 101.9 | 101.9% |
| 17 Jun 2024, 13:23 | 98.5 | 98.5% |
| 15 May 2024, 13:04 | 102 | 102% |
| 16 Apr 2024, 10:15 | 96.7 | 96.7% |
| 15 Jan 2024, 13:54 | 94.6 | 94.6% |
| 4 Dec 2023, 09:38 | 96.5 | 96.5% |
| 20 Nov 2023, 12:53 | 85.9 | 85.9% |
| 16 Oct 2023, 15:07 | 90.2 | 90.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.27 mg/l
Sampled 27 May 2026, 4 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 09:59 | 7.27 | 7.27 mg/l |
| 27 Mar 2026, 13:00 | 11.3 | 11.3 mg/l |
| 7 Jan 2026, 14:52 | 13.3 | 13.3 mg/l |
| 6 Mar 2025, 08:26 | 12.3 | 12.3 mg/l |
| 20 Feb 2025, 08:56 | 12.3 | 12.3 mg/l |
| 27 Jan 2025, 14:11 | 12 | 12 mg/l |
| 4 Dec 2024, 11:08 | 10.1 | 10.1 mg/l |
| 20 Nov 2024, 14:06 | 11.7 | 11.7 mg/l |
| 15 Oct 2024, 12:12 | 9.77 | 9.77 mg/l |
| 30 Sep 2024, 14:05 | 8.57 | 8.57 mg/l |
| 19 Aug 2024, 13:33 | 8.54 | 8.54 mg/l |
| 18 Jul 2024, 14:31 | 9.24 | 9.24 mg/l |
| 17 Jun 2024, 13:23 | 9.64 | 9.64 mg/l |
| 15 May 2024, 13:04 | 9.69 | 9.69 mg/l |
| 16 Apr 2024, 10:15 | 10.5 | 10.5 mg/l |
| 15 Jan 2024, 13:54 | 12.2 | 12.2 mg/l |
| 4 Dec 2023, 09:38 | 11.8 | 11.8 mg/l |
| 20 Nov 2023, 12:53 | 9.61 | 9.61 mg/l |
| 16 Oct 2023, 15:07 | 9.74 | 9.74 mg/l |
Water temperature
code 0076 · °C
20.8 °C
Sampled 27 May 2026, 4 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 09:59 | 20.8 | 20.8 °C |
| 27 Mar 2026, 13:00 | 10.5 | 10.5 °C |
| 7 Jan 2026, 14:52 | 3.7 | 3.7 °C |
| 6 Mar 2025, 08:26 | 6.1 | 6.1 °C |
| 20 Feb 2025, 08:56 | 7.4 | 7.4 °C |
| 27 Jan 2025, 14:11 | 6 | 6 °C |
| 4 Dec 2024, 11:08 | 8.2 | 8.2 °C |
| 20 Nov 2024, 14:06 | 8.1 | 8.1 °C |
| 15 Oct 2024, 12:12 | 11.7 | 11.7 °C |
| 30 Sep 2024, 14:05 | 13 | 13 °C |
| 19 Aug 2024, 13:33 | 18.8 | 18.8 °C |
| 18 Jul 2024, 14:31 | 20 | 20 °C |
| 17 Jun 2024, 13:23 | 16.3 | 16.3 °C |
| 15 May 2024, 13:04 | 17.7 | 17.7 °C |
| 16 Apr 2024, 10:15 | 11.4 | 11.4 °C |
| 15 Jan 2024, 13:54 | 4.7 | 4.7 °C |
| 4 Dec 2023, 09:38 | 6.6 | 6.6 °C |
| 20 Nov 2023, 12:53 | 10.3 | 10.3 °C |
| 16 Oct 2023, 15:07 | 11.8 | 11.8 °C |
pH
code 0061
7.71
Sampled 30 Jul 2026, 2 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Jul 2026, 09:34 | 7.71 | 7.71 |
| 27 May 2026, 09:59 | 7.99 | 7.99 |
| 27 Mar 2026, 13:00 | 8.12 | 8.12 |
| 7 Jan 2026, 14:52 | 8.13 | 8.13 |
| 10 Oct 2025, 14:41 | 7.73 | 7.73 |
| 18 Aug 2025, 09:19 | 7.63 | 7.63 |
| 11 Apr 2025, 15:45 | 8.87 | 8.87 |
| 6 Mar 2025, 08:26 | 7.81 | 7.81 |
| 20 Feb 2025, 08:56 | 7.81 | 7.81 |
| 27 Jan 2025, 14:11 | 8.04 | 8.04 |
| 4 Dec 2024, 11:08 | 7.81 | 7.81 |
| 20 Nov 2024, 14:06 | 8.06 | 8.06 |
| 15 Oct 2024, 12:12 | 7.79 | 7.79 |
| 30 Sep 2024, 14:05 | 7.72 | 7.72 |
| 19 Aug 2024, 13:33 | 7.92 | 7.92 |
| 18 Jul 2024, 14:31 | 8.01 | 8.01 |
| 17 Jun 2024, 13:23 | 7.97 | 7.97 |
| 15 May 2024, 13:04 | 8.1 | 8.1 |
| 16 Apr 2024, 10:15 | 8.15 | 8.15 |
| 3 Apr 2024, 09:32 | 7.79 | 7.79 |
| 15 Jan 2024, 13:54 | 8.03 | 8.03 |
| 4 Dec 2023, 09:38 | 7.81 | 7.81 |
| 20 Nov 2023, 12:53 | 7.8 | 7.8 |
| 16 Oct 2023, 15:07 | 8.11 | 8.11 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.094 mg/l
Sampled 27 May 2026, 4 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 09:59 | 0.094 | 0.094 mg/l |
| 27 Mar 2026, 13:00 | 0.044 | 0.044 mg/l |
| 7 Jan 2026, 14:52 | 0.1 | 0.1 mg/l |
| 6 Mar 2025, 08:26 | 0.094 | 0.094 mg/l |
| 20 Feb 2025, 08:56 | 0.086 | 0.086 mg/l |
| 27 Jan 2025, 14:11 | 0.33 | 0.33 mg/l |
| 4 Dec 2024, 11:08 | 0.06 | 0.06 mg/l |
| 20 Nov 2024, 14:06 | 0.11 | 0.11 mg/l |
| 15 Oct 2024, 12:12 | 0.13 | 0.13 mg/l |
| 30 Sep 2024, 14:05 | 0.045 | 0.045 mg/l |
| 19 Aug 2024, 13:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jul 2024, 14:31 | 0.051 | 0.051 mg/l |
| 17 Jun 2024, 13:23 | 0.06 | 0.06 mg/l |
| 15 May 2024, 13:04 | 0.047 | 0.047 mg/l |
| 16 Apr 2024, 10:15 | 0.049 | 0.049 mg/l |
| 15 Jan 2024, 13:54 | 0.11 | 0.11 mg/l |
| 4 Dec 2023, 09:38 | 0.087 | 0.087 mg/l |
| 20 Nov 2023, 12:53 | 0.051 | 0.051 mg/l |
| 16 Oct 2023, 15:07 | 0.086 | 0.086 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
11.9 mg/l
Sampled 27 May 2026, 4 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 09:59 | 11.9 | 11.9 mg/l |
| 27 Mar 2026, 13:00 | 9.07 | 9.07 mg/l |
| 7 Jan 2026, 14:52 | 9.44 | 9.44 mg/l |
| 6 Mar 2025, 08:26 | 7.47 | 7.47 mg/l |
| 20 Feb 2025, 08:56 | 6.55 | 6.55 mg/l |
| 27 Jan 2025, 14:11 | 6.04 | 6.04 mg/l |
| 4 Dec 2024, 11:08 | 6.46 | 6.46 mg/l |
| 20 Nov 2024, 14:06 | 9.43 | 9.43 mg/l |
| 15 Oct 2024, 12:12 | 5.95 | 5.95 mg/l |
| 30 Sep 2024, 14:05 | 6.55 | 6.55 mg/l |
| 19 Aug 2024, 13:33 | 9.68 | 9.68 mg/l |
| 18 Jul 2024, 14:31 | 6.66 | 6.66 mg/l |
| 17 Jun 2024, 13:23 | 8.66 | 8.66 mg/l |
| 15 May 2024, 13:04 | 7.36 | 7.36 mg/l |
| 16 Apr 2024, 10:15 | 6.97 | 6.97 mg/l |
| 15 Jan 2024, 13:54 | 7.65 | 7.65 mg/l |
| 4 Dec 2023, 09:38 | 7.13 | 7.13 mg/l |
| 20 Nov 2023, 12:53 | 6.75 | 6.75 mg/l |
| 16 Oct 2023, 15:07 | 6.96 | 6.96 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.22 mg/l
Sampled 27 May 2026, 4 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 09:59 | 0.22 | 0.22 mg/l |
| 27 Mar 2026, 13:00 | 0.13 | 0.13 mg/l |
| 7 Jan 2026, 14:52 | 0.19 | 0.19 mg/l |
| 6 Mar 2025, 08:26 | 0.11 | 0.11 mg/l |
| 20 Feb 2025, 08:56 | 0.13 | 0.13 mg/l |
| 27 Jan 2025, 14:11 | 0.15 | 0.15 mg/l |
| 4 Dec 2024, 11:08 | 0.17 | 0.17 mg/l |
| 20 Nov 2024, 14:06 | 0.19 | 0.19 mg/l |
| 15 Oct 2024, 12:12 | 0.16 | 0.16 mg/l |
| 30 Sep 2024, 14:05 | 0.24 | 0.24 mg/l |
| 19 Aug 2024, 13:33 | 0.27 | 0.27 mg/l |
| 18 Jul 2024, 14:31 | 0.25 | 0.25 mg/l |
| 17 Jun 2024, 13:23 | 0.23 | 0.23 mg/l |
| 15 May 2024, 13:04 | 0.18 | 0.18 mg/l |
| 16 Apr 2024, 10:15 | 0.15 | 0.15 mg/l |
| 15 Jan 2024, 13:54 | 0.17 | 0.17 mg/l |
| 4 Dec 2023, 09:38 | 0.17 | 0.17 mg/l |
| 20 Nov 2023, 12:53 | 0.17 | 0.17 mg/l |
| 16 Oct 2023, 15:07 | 0.21 | 0.21 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1032 µS/cm
Sampled 27 May 2026, 4 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 May 2026, 09:59 | 1032 | 1032 µS/cm |
| 27 Mar 2026, 13:00 | 882 | 882 µS/cm |
| 7 Jan 2026, 14:52 | 841 | 841 µS/cm |
| 6 Mar 2025, 08:26 | 822 | 822 µS/cm |
| 20 Feb 2025, 08:56 | 796 | 796 µS/cm |
| 27 Jan 2025, 14:11 | 680 | 680 µS/cm |
| 4 Dec 2024, 11:08 | 731 | 731 µS/cm |
| 20 Nov 2024, 14:06 | 883 | 883 µS/cm |
| 15 Oct 2024, 12:12 | 677 | 677 µS/cm |
| 30 Sep 2024, 14:05 | 529 | 529 µS/cm |
| 19 Aug 2024, 13:33 | 1062 | 1062 µS/cm |
| 18 Jul 2024, 14:31 | 807 | 807 µS/cm |
| 17 Jun 2024, 13:23 | 937 | 937 µS/cm |
| 15 May 2024, 13:04 | 893 | 893 µS/cm |
| 16 Apr 2024, 10:15 | 797 | 797 µS/cm |
| 15 Jan 2024, 13:54 | 801 | 801 µS/cm |
| 4 Dec 2023, 09:38 | 827 | 827 µS/cm |
| 20 Nov 2023, 12:53 | 714 | 714 µS/cm |
| 16 Oct 2023, 15:07 | 460 | 460 µS/cm |
Everything measured here
64 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 64 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 19 | Oct 2023 – May 2026 | 81.4% 27 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 19 | Oct 2023 – May 2026 | 7.27 mg/l 27 May 2026 |
| Temperature of Water 0076 | River water | 19 | Oct 2023 – May 2026 | 20.8 °C 27 May 2026 |
| pH 0061 | River water | 24 | Oct 2023 – Jul 2026 | 7.71 30 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 19 | Oct 2023 – May 2026 | 0.094 mg/l 27 May 2026 |
| Nitrate as N 0117 | River water | 19 | Oct 2023 – May 2026 | 11.9 mg/l 27 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 19 | Oct 2023 – May 2026 | 0.22 mg/l 27 May 2026 |
| Conductivity at 25 C 0077 | River water | 19 | Oct 2023 – May 2026 | 1032 µS/cm 27 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 20 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 20 Nov 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 20 Nov 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 19 | Oct 2023 – May 2026 | 170 mg/l 27 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 19 | Oct 2023 – May 2026 | 0.00367 mg/l 27 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 15 | Apr 2024 – May 2026 | below 3 mg/l 27 May 2026 |
| Calcium, Dissolved 0239 | River water | 10 | Oct 2023 – Jul 2026 | 110 mg/l 30 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 10 | Oct 2023 – Jul 2026 | 6.5 mg/l 30 Jul 2026 |
| Copper : BLM Bioavailable 4821 | River water | 9 | Oct 2023 – Jul 2026 | 0.24 µg/l 30 Jul 2026 |
| Copper, Dissolved 6450 | River water | 10 | Oct 2023 – Jul 2026 | 6.4 µg/l 30 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Nitrite as N 0118 | River water | 19 | Oct 2023 – May 2026 | 0.059 mg/l 27 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 19 | Oct 2023 – May 2026 | 12 mg/l 27 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Nov 2024 – Nov 2024 | 0.0028 µg/l 20 Nov 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Nov 2024 – Nov 2024 | 0.003 µg/l 20 Nov 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 20 Nov 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Nov 2024 – Nov 2024 | 0.0015 µg/l 20 Nov 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Nov 2024 – Nov 2024 | 0.0017 µg/l 20 Nov 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Nov 2024 – Nov 2024 | 0.0035 µg/l 20 Nov 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Nov 2024 – Nov 2024 | 0.0014 µg/l 20 Nov 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Nov 2024 – Nov 2024 | 0.002 µg/l 20 Nov 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Nov 2024 – Nov 2024 | 0.0018 µg/l 20 Nov 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Nov 2024 – Nov 2024 | 0.004 µg/l 20 Nov 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Nov 2024 – Nov 2024 | below 0.006 µg/l 20 Nov 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 20 Nov 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 20 Nov 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 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.