Sleap Brook Tilley
EA name: SLEAP BK TILLEY (also listed as “SLEAP BROOK TILLEY”)
Environment Agency sampling point MD-27585100 · 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
- 26 May 2026, 10:564 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
- 21 since 18 Sep 2024 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 350500, 328000As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Sleap Brook
- River, by the map
- Sleap BrookPlaced on the river its name gives, 38 m from the line.
- Next gauge downstream
- Rodington On the River Roden · 31 km along the river
- Why it was sampled
- Monitoring (national agency policy) (14 samples)
Environmental monitoring statutory (EU directives) (7 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
73.2%
Sampled 26 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 10:56 | 73.2 | 73.2% |
| 29 Apr 2026, 11:08 | 82.5 | 82.5% |
| 16 Mar 2026, 11:07 | 87.1 | 87.1% |
| 18 Feb 2026, 09:20 | 86.8 | 86.8% |
| 27 Jan 2026, 12:20 | 87.1 | 87.1% |
| 11 Dec 2025, 11:15 | 82 | 82% |
| 25 Nov 2025, 10:49 | 78 | 78% |
| 10 Oct 2025, 10:04 | 77 | 77% |
| 1 Sep 2025, 12:32 | 81.8 | 81.8% |
| 8 Aug 2025, 14:27 | 80.6 | 80.6% |
| 16 Jul 2025, 08:31 | 74.3 | 74.3% |
| 27 Jun 2025, 11:45 | 75.7 | 75.7% |
| 16 May 2025, 13:12 | 87.3 | 87.3% |
| 3 Apr 2025, 10:30 | 88.1 | 88.1% |
| 11 Mar 2025, 09:55 | 86.3 | 86.3% |
| 11 Feb 2025, 11:19 | 78.3 | 78.3% |
| 23 Jan 2025, 10:07 | 78.7 | 78.7% |
| 4 Dec 2024, 10:15 | 87.2 | 87.2% |
| 18 Nov 2024, 10:54 | 75.6 | 75.6% |
| 17 Oct 2024, 10:39 | 64.1 | 64.1% |
| 18 Sep 2024, 11:03 | 77.8 | 77.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.09 mg/l
Sampled 26 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 10:56 | 7.09 | 7.09 mg/l |
| 29 Apr 2026, 11:08 | 9.36 | 9.36 mg/l |
| 16 Mar 2026, 11:07 | 10.4 | 10.4 mg/l |
| 18 Feb 2026, 09:20 | 11.1 | 11.1 mg/l |
| 27 Jan 2026, 12:20 | 10.7 | 10.7 mg/l |
| 11 Dec 2025, 11:15 | 9.72 | 9.72 mg/l |
| 25 Nov 2025, 10:49 | 9.55 | 9.55 mg/l |
| 10 Oct 2025, 10:04 | 8.3 | 8.3 mg/l |
| 1 Sep 2025, 12:32 | 8.3 | 8.3 mg/l |
| 8 Aug 2025, 14:27 | 7.97 | 7.97 mg/l |
| 16 Jul 2025, 08:31 | 7.62 | 7.62 mg/l |
| 27 Jun 2025, 11:45 | 7.48 | 7.48 mg/l |
| 16 May 2025, 13:12 | 9.09 | 9.09 mg/l |
| 3 Apr 2025, 10:30 | 10 | 10 mg/l |
| 11 Mar 2025, 09:55 | 10.4 | 10.4 mg/l |
| 11 Feb 2025, 11:19 | 9.68 | 9.68 mg/l |
| 23 Jan 2025, 10:07 | 9.71 | 9.71 mg/l |
| 4 Dec 2024, 10:15 | 10.5 | 10.5 mg/l |
| 18 Nov 2024, 10:54 | 8.75 | 8.75 mg/l |
| 17 Oct 2024, 10:39 | 6.78 | 6.78 mg/l |
| 18 Sep 2024, 11:03 | 8.33 | 8.33 mg/l |
Water temperature
code 0076 · °C
16.8 °C
Sampled 26 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 10:56 | 16.8 | 16.8 °C |
| 29 Apr 2026, 11:08 | 9.7 | 9.7 °C |
| 16 Mar 2026, 11:07 | 7.7 | 7.7 °C |
| 18 Feb 2026, 09:20 | 4.9 | 4.9 °C |
| 27 Jan 2026, 12:20 | 6.5 | 6.5 °C |
| 11 Dec 2025, 11:15 | 7.9 | 7.9 °C |
| 25 Nov 2025, 10:49 | 6.6 | 6.6 °C |
| 10 Oct 2025, 10:04 | 11.9 | 11.9 °C |
| 1 Sep 2025, 12:32 | 14.6 | 14.6 °C |
| 8 Aug 2025, 14:27 | 15.8 | 15.8 °C |
| 16 Jul 2025, 08:31 | 14.1 | 14.1 °C |
| 27 Jun 2025, 11:45 | 15.8 | 15.8 °C |
| 16 May 2025, 13:12 | 13.4 | 13.4 °C |
| 3 Apr 2025, 10:30 | 9.6 | 9.6 °C |
| 11 Mar 2025, 09:55 | 7.3 | 7.3 °C |
| 11 Feb 2025, 11:19 | 6.2 | 6.2 °C |
| 23 Jan 2025, 10:07 | 6.3 | 6.3 °C |
| 4 Dec 2024, 10:15 | 7.1 | 7.1 °C |
| 18 Nov 2024, 10:54 | 8.9 | 8.9 °C |
| 17 Oct 2024, 10:39 | 12.7 | 12.7 °C |
| 18 Sep 2024, 11:03 | 12.2 | 12.2 °C |
pH
code 0061
7.61
Sampled 26 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 10:56 | 7.61 | 7.61 |
| 29 Apr 2026, 11:08 | 7.83 | 7.83 |
| 16 Mar 2026, 11:07 | 7.65 | 7.65 |
| 18 Feb 2026, 09:20 | 7.58 | 7.58 |
| 27 Jan 2026, 12:20 | 7.88 | 7.88 |
| 11 Dec 2025, 11:15 | 7.67 | 7.67 |
| 25 Nov 2025, 10:49 | 7.6 | 7.6 |
| 10 Oct 2025, 10:04 | 7.88 | 7.88 |
| 1 Sep 2025, 12:32 | 7.99 | 7.99 |
| 8 Aug 2025, 14:27 | 7.9 | 7.9 |
| 16 Jul 2025, 08:31 | 7.74 | 7.74 |
| 27 Jun 2025, 11:45 | 7.75 | 7.75 |
| 16 May 2025, 13:12 | 7.86 | 7.86 |
| 3 Apr 2025, 10:30 | 7.97 | 7.97 |
| 11 Mar 2025, 09:55 | 7.76 | 7.76 |
| 11 Feb 2025, 11:19 | 7.68 | 7.68 |
| 23 Jan 2025, 10:07 | 7.59 | 7.59 |
| 4 Dec 2024, 10:15 | 7.67 | 7.67 |
| 18 Nov 2024, 10:54 | 7.64 | 7.64 |
| 17 Oct 2024, 10:39 | 7.09 | 7.09 |
| 18 Sep 2024, 11:03 | 7.66 | 7.66 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.071 mg/l
Sampled 26 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 10:56 | 0.071 | 0.071 mg/l |
| 29 Apr 2026, 11:08 | 0.29 | 0.29 mg/l |
| 16 Mar 2026, 11:07 | 0.2 | 0.2 mg/l |
| 18 Feb 2026, 09:20 | 0.2 | 0.2 mg/l |
| 27 Jan 2026, 12:20 | 0.15 | 0.15 mg/l |
| 11 Dec 2025, 11:15 | 0.069 | 0.069 mg/l |
| 25 Nov 2025, 10:49 | 0.21 | 0.21 mg/l |
| 10 Oct 2025, 10:04 | 0.047 | 0.047 mg/l |
| 1 Sep 2025, 12:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Aug 2025, 14:27 | 0.046 | 0.046 mg/l |
| 16 Jul 2025, 08:31 | 0.048 | 0.048 mg/l |
| 27 Jun 2025, 11:45 | 0.062 | 0.062 mg/l |
| 16 May 2025, 13:12 | 0.2 | 0.2 mg/l |
| 3 Apr 2025, 10:30 | 0.29 | 0.29 mg/l |
| 11 Mar 2025, 09:55 | 0.34 | 0.34 mg/l |
| 11 Feb 2025, 11:19 | 0.48 | 0.48 mg/l |
| 23 Jan 2025, 10:07 | 0.42 | 0.42 mg/l |
| 4 Dec 2024, 10:15 | 0.18 | 0.18 mg/l |
| 18 Nov 2024, 10:54 | 0.26 | 0.26 mg/l |
| 17 Oct 2024, 10:39 | 0.053 | 0.053 mg/l |
| 18 Sep 2024, 11:03 | 0.15 | 0.15 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.45 mg/l
Sampled 26 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 10:56 | 6.45 | 6.45 mg/l |
| 29 Apr 2026, 11:08 | 6.29 | 6.29 mg/l |
| 16 Mar 2026, 11:07 | 5.16 | 5.16 mg/l |
| 18 Feb 2026, 09:20 | 5.77 | 5.77 mg/l |
| 27 Jan 2026, 12:20 | 5.28 | 5.28 mg/l |
| 11 Dec 2025, 11:15 | 7.07 | 7.07 mg/l |
| 25 Nov 2025, 10:49 | 8.14 | 8.14 mg/l |
| 10 Oct 2025, 10:04 | 4.95 | 4.95 mg/l |
| 1 Sep 2025, 12:32 | 5.77 | 5.77 mg/l |
| 8 Aug 2025, 14:27 | 6.13 | 6.13 mg/l |
| 16 Jul 2025, 08:31 | 5.73 | 5.73 mg/l |
| 27 Jun 2025, 11:45 | 6.5 | 6.5 mg/l |
| 16 May 2025, 13:12 | 7.16 | 7.16 mg/l |
| 3 Apr 2025, 10:30 | 7.51 | 7.51 mg/l |
| 11 Mar 2025, 09:55 | 6.35 | 6.35 mg/l |
| 11 Feb 2025, 11:19 | 6.84 | 6.84 mg/l |
| 23 Jan 2025, 10:07 | 6.75 | 6.75 mg/l |
| 4 Dec 2024, 10:15 | 5.25 | 5.25 mg/l |
| 18 Nov 2024, 10:54 | 6.21 | 6.21 mg/l |
| 17 Oct 2024, 10:39 | 3.87 | 3.87 mg/l |
| 18 Sep 2024, 11:03 | 6.12 | 6.12 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.18 mg/l
Sampled 26 May 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 10:56 | 0.18 | 0.18 mg/l |
| 29 Apr 2026, 11:08 | 0.033 | 0.033 mg/l |
| 16 Mar 2026, 11:07 | 0.069 | 0.069 mg/l |
| 18 Feb 2026, 09:20 | 0.066 | 0.066 mg/l |
| 27 Jan 2026, 12:20 | 0.086 | 0.086 mg/l |
| 11 Dec 2025, 11:15 | 0.11 | 0.11 mg/l |
| 25 Nov 2025, 10:49 | 0.063 | 0.063 mg/l |
| 10 Oct 2025, 10:04 | 0.026 | 0.026 mg/l |
| 1 Sep 2025, 12:32 | 0.036 | 0.036 mg/l |
| 8 Aug 2025, 14:27 | 0.06 | 0.06 mg/l |
| 16 Jul 2025, 08:31 | 0.055 | 0.055 mg/l |
| 27 Jun 2025, 11:45 | 0.057 | 0.057 mg/l |
| 16 May 2025, 13:12 | 0.03 | 0.03 mg/l |
| 3 Apr 2025, 10:30 | 0.041 | 0.041 mg/l |
| 11 Mar 2025, 09:55 | 0.092 | 0.092 mg/l |
| 11 Feb 2025, 11:19 | 0.14 | 0.14 mg/l |
| 23 Jan 2025, 10:07 | 0.083 | 0.083 mg/l |
| 18 Nov 2024, 10:54 | 0.075 | 0.075 mg/l |
| 17 Oct 2024, 10:39 | 0.27 | 0.27 mg/l |
| 18 Sep 2024, 11:03 | 0.046 | 0.046 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
761 µS/cm
Sampled 26 May 2026, 4 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 10:56 | 761 | 761 µS/cm |
| 29 Apr 2026, 11:08 | 757 | 757 µS/cm |
| 16 Mar 2026, 11:07 | 589 | 589 µS/cm |
| 18 Feb 2026, 09:20 | 552 | 552 µS/cm |
| 27 Jan 2026, 12:20 | 531 | 531 µS/cm |
| 11 Dec 2025, 11:15 | 511 | 511 µS/cm |
| 25 Nov 2025, 10:49 | 694 | 694 µS/cm |
| 10 Oct 2025, 10:04 | 801 | 801 µS/cm |
| 1 Sep 2025, 12:32 | 784 | 784 µS/cm |
| 8 Aug 2025, 14:27 | 750 | 750 µS/cm |
| 16 Jul 2025, 08:31 | 718 | 718 µS/cm |
| 27 Jun 2025, 11:45 | 780 | 780 µS/cm |
| 16 May 2025, 13:12 | 779 | 779 µS/cm |
| 3 Apr 2025, 10:30 | 801 | 801 µS/cm |
| 11 Mar 2025, 09:55 | 712 | 712 µS/cm |
| 11 Feb 2025, 11:19 | 723 | 723 µS/cm |
| 23 Jan 2025, 10:07 | 714 | 714 µS/cm |
| 4 Dec 2024, 10:15 | 583 | 583 µS/cm |
| 18 Nov 2024, 10:54 | 699 | 699 µS/cm |
| 17 Oct 2024, 10:39 | 201 | 201 µS/cm |
| 18 Sep 2024, 11:03 | 763 | 763 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 | 21 | Sep 2024 – May 2026 | 73.2% 26 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 21 | Sep 2024 – May 2026 | 7.09 mg/l 26 May 2026 |
| Temperature of Water 0076 | River water | 21 | Sep 2024 – May 2026 | 16.8 °C 26 May 2026 |
| pH 0061 | River water | 21 | Sep 2024 – May 2026 | 7.61 26 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Sep 2024 – May 2026 | 0.071 mg/l 26 May 2026 |
| Nitrate as N 0117 | River water | 21 | Sep 2024 – May 2026 | 6.45 mg/l 26 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Sep 2024 – May 2026 | 0.18 mg/l 26 May 2026 |
| Conductivity at 25 C 0077 | River water | 21 | Sep 2024 – May 2026 | 761 µS/cm 26 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 18 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 18 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 18 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 18 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 18 Sep 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Sep 2024 – Sep 2024 | below 0.004 µg/l 18 Sep 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Sep 2024 – Sep 2024 | below 0.005 µg/l 18 Sep 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Sep 2024 – Sep 2024 | 0.0012 µg/l 18 Sep 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 18 Sep 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Sep 2024 – May 2026 | 260 mg/l 26 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Sep 2024 – May 2026 | 0.00088 mg/l 26 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 20 | Sep 2024 – May 2026 | below 1 mg/l 26 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 18 Sep 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 18 Sep 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 18 Sep 2024 |
| Nitrite as N 0118 | River water | 21 | Sep 2024 – May 2026 | 0.15 mg/l 26 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Sep 2024 – May 2026 | 6.6 mg/l 26 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Sep 2024 – Sep 2024 | 0.013 µg/l 18 Sep 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Sep 2024 – Sep 2024 | 0.0032 µg/l 18 Sep 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 18 Sep 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 18 Sep 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Sep 2024 – Sep 2024 | below 0.005 µg/l 18 Sep 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 18 Sep 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Sep 2024 – Sep 2024 | 0.0011 µg/l 18 Sep 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Sep 2024 – Sep 2024 | 0.0011 µg/l 18 Sep 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Sep 2024 – Sep 2024 | 0.0031 µg/l 18 Sep 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 18 Sep 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 18 Sep 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 18 Sep 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Sep 2024 – Sep 2024 | 0.001 µg/l 18 Sep 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Sep 2024 – Sep 2024 | 0.0011 µg/l 18 Sep 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Sep 2024 – Sep 2024 | 0.001 µg/l 18 Sep 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 18 Sep 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Sep 2024 – Sep 2024 | 0.0045 µg/l 18 Sep 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Sep 2024 – Sep 2024 | below 0.006 µg/l 18 Sep 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Sep 2024 – Sep 2024 | below 0.005 µg/l 18 Sep 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Sep 2024 – Sep 2024 | below 0.004 µg/l 18 Sep 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 18 Sep 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.