River Avon Lower Tewkesbury
EA name: RIVER AVON LOWER TEWKESBURY
Environment Agency sampling point MD-04767100 · 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
- 29 May 2026, 15:284 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 2 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 389370, 233220As published, to the nearest 10 m. Open in a map
- River, by its own name
- Avon
- River, by the map
- River AvonPlaced on the river its name gives, 120 m from the line.
- Next gauge downstream
- Deerhurst Flood Plain Level On the River Severn · 4.5 km along the riverDeerhurst On the River Severn · 4.5 km along the riverBeside Upper Pound: too close to say above or below.
- Nearest gauge upstream
- Bredon On the River Avon · 5.4 km along the riverTewkesbury Teddington On the Carrant Brook · 8.6 km along the river
- Why it was sampled
- Monitoring (national agency policy) (27 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98%
Sampled 29 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 15:28 | 98 | 98% |
| 27 Apr 2026, 14:16 | 209.7 | 209.7% |
| 25 Mar 2026, 14:04 | 98 | 98% |
| 25 Feb 2026, 10:06 | 93.2 | 93.2% |
| 16 Jan 2026, 14:47 | 98.3 | 98.3% |
| 3 Mar 2025, 13:06 | 97.6 | 97.6% |
| 6 Feb 2025, 08:44 | 98.5 | 98.5% |
| 23 Jan 2025, 14:50 | 99.3 | 99.3% |
| 4 Dec 2024, 12:50 | 95.8 | 95.8% |
| 18 Nov 2024, 10:25 | 89.6 | 89.6% |
| 22 Oct 2024, 13:48 | 85.2 | 85.2% |
| 16 Sep 2024, 13:39 | 97 | 97% |
| 19 Aug 2024, 08:31 | 87.6 | 87.6% |
| 17 Jun 2024, 08:10 | 102.5 | 102.5% |
| 13 May 2024, 13:02 | 98.2 | 98.2% |
| 15 Apr 2024, 12:46 | 97.1 | 97.1% |
| 19 Feb 2024, 09:14 | 88.4 | 88.4% |
| 17 Jan 2024, 14:45 | 98.4 | 98.4% |
| 4 Dec 2023, 07:43 | 98.2 | 98.2% |
| 20 Nov 2023, 12:38 | 90.9 | 90.9% |
| 16 Oct 2023, 15:29 | 94.8 | 94.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.47 mg/l
Sampled 29 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 15:28 | 8.47 | 8.47 mg/l |
| 27 Apr 2026, 14:16 | 20.6 | 20.6 mg/l |
| 25 Mar 2026, 14:04 | 11 | 11 mg/l |
| 25 Feb 2026, 10:06 | 10.7 | 10.7 mg/l |
| 16 Jan 2026, 14:47 | 12 | 12 mg/l |
| 3 Mar 2025, 13:06 | 11.9 | 11.9 mg/l |
| 6 Feb 2025, 08:44 | 12 | 12 mg/l |
| 23 Jan 2025, 14:50 | 12.4 | 12.4 mg/l |
| 4 Dec 2024, 12:50 | 11.2 | 11.2 mg/l |
| 18 Nov 2024, 10:25 | 10.3 | 10.3 mg/l |
| 22 Oct 2024, 13:48 | 8.96 | 8.96 mg/l |
| 16 Sep 2024, 13:39 | 9.53 | 9.53 mg/l |
| 19 Aug 2024, 08:31 | 8.14 | 8.14 mg/l |
| 17 Jun 2024, 08:10 | 10.5 | 10.5 mg/l |
| 13 May 2024, 13:02 | 9.41 | 9.41 mg/l |
| 15 Apr 2024, 12:46 | 10.5 | 10.5 mg/l |
| 19 Feb 2024, 09:14 | 9.94 | 9.94 mg/l |
| 17 Jan 2024, 14:45 | 12.9 | 12.9 mg/l |
| 4 Dec 2023, 07:43 | 12.1 | 12.1 mg/l |
| 20 Nov 2023, 12:38 | 10.2 | 10.2 mg/l |
| 16 Oct 2023, 15:29 | 10.1 | 10.1 mg/l |
Water temperature
code 0076 · °C
22.5 °C
Sampled 29 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 15:28 | 22.5 | 22.5 °C |
| 27 Apr 2026, 14:16 | 16.2 | 16.2 °C |
| 25 Mar 2026, 14:04 | 10 | 10 °C |
| 25 Feb 2026, 10:06 | 9.4 | 9.4 °C |
| 16 Jan 2026, 14:47 | 6.6 | 6.6 °C |
| 3 Mar 2025, 13:06 | 6.7 | 6.7 °C |
| 6 Feb 2025, 08:44 | 6.7 | 6.7 °C |
| 23 Jan 2025, 14:50 | 5.9 | 5.9 °C |
| 4 Dec 2024, 12:50 | 8.6 | 8.6 °C |
| 18 Nov 2024, 10:25 | 9.2 | 9.2 °C |
| 22 Oct 2024, 13:48 | 13 | 13 °C |
| 16 Sep 2024, 13:39 | 16.1 | 16.1 °C |
| 19 Aug 2024, 08:31 | 18.8 | 18.8 °C |
| 17 Jun 2024, 08:10 | 14.2 | 14.2 °C |
| 13 May 2024, 13:02 | 17.3 | 17.3 °C |
| 15 Apr 2024, 12:46 | 11.9 | 11.9 °C |
| 19 Feb 2024, 09:14 | 10.1 | 10.1 °C |
| 17 Jan 2024, 14:45 | 4 | 4 °C |
| 4 Dec 2023, 07:43 | 6.3 | 6.3 °C |
| 20 Nov 2023, 12:38 | 10.3 | 10.3 °C |
| 16 Oct 2023, 15:29 | 12.4 | 12.4 °C |
pH
code 0061
7.93
Sampled 29 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 15:28 | 7.93 | 7.93 |
| 27 Apr 2026, 14:16 | 8.98 | 8.98 |
| 25 Mar 2026, 14:04 | 8.1 | 8.1 |
| 25 Feb 2026, 10:06 | 8.08 | 8.08 |
| 16 Jan 2026, 14:47 | 8.08 | 8.08 |
| 3 Mar 2025, 13:06 | 8.17 | 8.17 |
| 6 Feb 2025, 08:44 | 7.86 | 7.86 |
| 23 Jan 2025, 14:50 | 8.21 | 8.21 |
| 4 Dec 2024, 12:50 | 8.06 | 8.06 |
| 18 Nov 2024, 10:25 | 7.96 | 7.96 |
| 22 Oct 2024, 13:48 | 7.8 | 7.8 |
| 16 Sep 2024, 13:39 | 7.96 | 7.96 |
| 19 Aug 2024, 08:31 | 7.93 | 7.93 |
| 17 Jun 2024, 08:10 | 7.83 | 7.83 |
| 13 May 2024, 13:02 | 8.06 | 8.06 |
| 15 Apr 2024, 12:46 | 8.12 | 8.12 |
| 19 Feb 2024, 09:14 | 7.85 | 7.85 |
| 17 Jan 2024, 14:45 | 8.03 | 8.03 |
| 4 Dec 2023, 07:43 | 8.01 | 8.01 |
| 20 Nov 2023, 12:38 | 7.91 | 7.91 |
| 16 Oct 2023, 15:29 | 7.95 | 7.95 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.066 mg/l
Sampled 29 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 15:28 | 0.066 | 0.066 mg/l |
| 27 Apr 2026, 14:16 | 0.043 | 0.043 mg/l |
| 25 Mar 2026, 14:04 | 0.072 | 0.072 mg/l |
| 25 Feb 2026, 10:06 | 0.054 | 0.054 mg/l |
| 16 Jan 2026, 14:47 | 0.12 | 0.12 mg/l |
| 3 Mar 2025, 13:06 | 0.074 | 0.074 mg/l |
| 6 Feb 2025, 08:44 | 0.088 | 0.088 mg/l |
| 23 Jan 2025, 14:50 | 0.1 | 0.1 mg/l |
| 4 Dec 2024, 12:50 | 0.069 | 0.069 mg/l |
| 18 Nov 2024, 10:25 | 0.056 | 0.056 mg/l |
| 22 Oct 2024, 13:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Sep 2024, 13:39 | 0.056 | 0.056 mg/l |
| 19 Aug 2024, 08:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 08:10 | 0.055 | 0.055 mg/l |
| 13 May 2024, 13:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Apr 2024, 12:46 | 0.067 | 0.067 mg/l |
| 19 Feb 2024, 09:14 | 0.063 | 0.063 mg/l |
| 17 Jan 2024, 14:45 | 0.13 | 0.13 mg/l |
| 4 Dec 2023, 07:43 | 0.073 | 0.073 mg/l |
| 20 Nov 2023, 12:38 | 0.071 | 0.071 mg/l |
| 16 Oct 2023, 15:29 | 0.17 | 0.17 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.54 mg/l
Sampled 29 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 15:28 | 9.54 | 9.54 mg/l |
| 27 Apr 2026, 14:16 | 7.87 | 7.87 mg/l |
| 25 Mar 2026, 14:04 | 8.35 | 8.35 mg/l |
| 25 Feb 2026, 10:06 | 6.56 | 6.56 mg/l |
| 16 Jan 2026, 14:47 | 8.8 | 8.8 mg/l |
| 3 Mar 2025, 13:06 | 6.66 | 6.66 mg/l |
| 6 Feb 2025, 08:44 | 6.95 | 6.95 mg/l |
| 23 Jan 2025, 14:50 | 9.04 | 9.04 mg/l |
| 4 Dec 2024, 12:50 | 6.76 | 6.76 mg/l |
| 18 Nov 2024, 10:25 | 11 | 11 mg/l |
| 22 Oct 2024, 13:48 | 5.66 | 5.66 mg/l |
| 16 Sep 2024, 13:39 | 9.96 | 9.96 mg/l |
| 19 Aug 2024, 08:31 | 8.77 | 8.77 mg/l |
| 17 Jun 2024, 08:10 | 9.17 | 9.17 mg/l |
| 13 May 2024, 13:02 | 7.77 | 7.77 mg/l |
| 15 Apr 2024, 12:46 | 6.56 | 6.56 mg/l |
| 19 Feb 2024, 09:14 | 3.36 | 3.36 mg/l |
| 17 Jan 2024, 14:45 | 8.74 | 8.74 mg/l |
| 4 Dec 2023, 07:43 | 7.43 | 7.43 mg/l |
| 20 Nov 2023, 12:38 | 6.74 | 6.74 mg/l |
| 16 Oct 2023, 15:29 | 9.93 | 9.93 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.19 mg/l
Sampled 29 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 15:28 | 0.19 | 0.19 mg/l |
| 27 Apr 2026, 14:16 | <0.01 | below 0.01 mg/l (not detected above this) |
| 25 Mar 2026, 14:04 | 0.13 | 0.13 mg/l |
| 25 Feb 2026, 10:06 | 0.13 | 0.13 mg/l |
| 16 Jan 2026, 14:47 | 0.14 | 0.14 mg/l |
| 3 Mar 2025, 13:06 | 0.16 | 0.16 mg/l |
| 6 Feb 2025, 08:44 | 0.12 | 0.12 mg/l |
| 23 Jan 2025, 14:50 | 0.19 | 0.19 mg/l |
| 4 Dec 2024, 12:50 | 0.16 | 0.16 mg/l |
| 18 Nov 2024, 10:25 | 0.2 | 0.2 mg/l |
| 22 Oct 2024, 13:48 | 0.18 | 0.18 mg/l |
| 16 Sep 2024, 13:39 | 0.28 | 0.28 mg/l |
| 19 Aug 2024, 08:31 | 0.29 | 0.29 mg/l |
| 17 Jun 2024, 08:10 | 0.21 | 0.21 mg/l |
| 13 May 2024, 13:02 | 0.19 | 0.19 mg/l |
| 15 Apr 2024, 12:46 | 0.15 | 0.15 mg/l |
| 19 Feb 2024, 09:14 | 0.16 | 0.16 mg/l |
| 17 Jan 2024, 14:45 | 0.17 | 0.17 mg/l |
| 4 Dec 2023, 07:43 | 0.17 | 0.17 mg/l |
| 20 Nov 2023, 12:38 | 0.17 | 0.17 mg/l |
| 16 Oct 2023, 15:29 | 0.3 | 0.3 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
994 µS/cm
Sampled 29 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 15:28 | 994 | 994 µS/cm |
| 27 Apr 2026, 14:16 | 872 | 872 µS/cm |
| 25 Mar 2026, 14:04 | 854 | 854 µS/cm |
| 25 Feb 2026, 10:06 | 660 | 660 µS/cm |
| 16 Jan 2026, 14:47 | 693 | 693 µS/cm |
| 3 Mar 2025, 13:06 | 734 | 734 µS/cm |
| 6 Feb 2025, 08:44 | 754 | 754 µS/cm |
| 23 Jan 2025, 14:50 | 865 | 865 µS/cm |
| 4 Dec 2024, 12:50 | 713 | 713 µS/cm |
| 18 Nov 2024, 10:25 | 981 | 981 µS/cm |
| 22 Oct 2024, 13:48 | 585 | 585 µS/cm |
| 16 Sep 2024, 13:39 | 941 | 941 µS/cm |
| 19 Aug 2024, 08:31 | 1050 | 1050 µS/cm |
| 17 Jun 2024, 08:10 | 957 | 957 µS/cm |
| 13 May 2024, 13:02 | 870 | 870 µS/cm |
| 15 Apr 2024, 12:46 | 762 | 762 µS/cm |
| 19 Feb 2024, 09:14 | 466 | 466 µS/cm |
| 17 Jan 2024, 14:45 | 855 | 855 µS/cm |
| 4 Dec 2023, 07:43 | 853 | 853 µS/cm |
| 20 Nov 2023, 12:38 | 691 | 691 µS/cm |
| 16 Oct 2023, 15:29 | 692 | 692 µS/cm |
Everything measured here
61 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 61 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 21 | Oct 2023 – May 2026 | 98% 29 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 21 | Oct 2023 – May 2026 | 8.47 mg/l 29 May 2026 |
| Temperature of Water 0076 | River water | 21 | Oct 2023 – May 2026 | 22.5 °C 29 May 2026 |
| pH 0061 | River water | 21 | Oct 2023 – May 2026 | 7.93 29 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Oct 2023 – May 2026 | 0.066 mg/l 29 May 2026 |
| Nitrate as N 0117 | River water | 21 | Oct 2023 – May 2026 | 9.54 mg/l 29 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Oct 2023 – May 2026 | 0.19 mg/l 29 May 2026 |
| Conductivity at 25 C 0077 | River water | 21 | Oct 2023 – May 2026 | 994 µS/cm 29 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 | 21 | Oct 2023 – May 2026 | 180 mg/l 29 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Oct 2023 – May 2026 | 0.00255 mg/l 29 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 16 | Feb 2024 – May 2026 | 2 mg/l 29 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 | 21 | Oct 2023 – May 2026 | 0.058 mg/l 29 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Oct 2023 – May 2026 | 9.6 mg/l 29 May 2026 |
| Non Target Screening : Water 2876 | River water | 2 | Jan 2025 – Apr 2026 | 1 text result 27 Apr 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 | 0.0026 µg/l 18 Nov 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Nov 2024 – Nov 2024 | 0.003 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 | 0.0017 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 | 0.00064 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Nov 2024 – Nov 2024 | 0.0021 µg/l 18 Nov 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Nov 2024 – Nov 2024 | 0.004 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 |
| Perfluorooctanoate anion 9274 | River water | 12 | Oct 2023 – Jan 2025 | 0.0014 µg/l 23 Jan 2025 |
| Perfluorooctanoic acid 8890 | River water | 1 | Nov 2024 – Nov 2024 | 0.0014 µg/l 18 Nov 2024 |
| Perfluorooctylsulphonate anion 9276 | River water | 11 | Oct 2023 – Jan 2025 | 0.0028 µg/l 23 Jan 2025 |
| 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 | 0.0043 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.