River Leam - Eathorpe
EA name: RIVER LEAM - EATHORPE
Environment Agency sampling point MD-10929790 · 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
- 5 May 2026, 11:225 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 17 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 439000, 269300As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Leam
- River, by the map
- River LeamPlaced on the river its name gives, 91 m from the line.
- Next gauge downstream
- Eathorpe On the River Leam · 0.6 km along the river
- Nearest gauge upstream
- Kites Hardwick On the River Leam · 13 km along the riverSoutham On the River Itchen · 15 km along the river
- Why it was sampled
- Monitoring (national agency policy) (21 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.5%
Sampled 5 May 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 11:22 | 95.5 | 95.5% |
| 10 Apr 2026, 13:57 | 100.5 | 100.5% |
| 17 Mar 2026, 11:17 | 97.7 | 97.7% |
| 13 Feb 2026, 12:26 | 94.2 | 94.2% |
| 28 Jan 2026, 11:18 | 91.3 | 91.3% |
| 14 Mar 2025, 14:43 | 98.4 | 98.4% |
| 25 Feb 2025, 12:21 | 95.2 | 95.2% |
| 24 Jan 2025, 13:48 | 96.3 | 96.3% |
| 20 Nov 2024, 11:41 | 94 | 94% |
| 23 Oct 2024, 10:44 | 91 | 91% |
| 19 Sep 2024, 10:18 | 81 | 81% |
| 30 Aug 2024, 11:30 | 78 | 78% |
| 15 Jul 2024, 09:21 | 90.5 | 90.5% |
| 14 May 2024, 13:00 | 96.6 | 96.6% |
| 23 Apr 2024, 10:47 | 97.1 | 97.1% |
| 20 Mar 2024, 12:19 | 92.4 | 92.4% |
| 29 Feb 2024, 12:53 | 96.9 | 96.9% |
| 16 Jan 2024, 12:04 | 92 | 92% |
| 8 Dec 2023, 10:42 | 87.8 | 87.8% |
| 22 Nov 2023, 09:22 | 90 | 90% |
| 17 Oct 2023, 11:20 | 90.4 | 90.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.99 mg/l
Sampled 5 May 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 11:22 | 9.99 | 9.99 mg/l |
| 10 Apr 2026, 13:57 | 11 | 11 mg/l |
| 17 Mar 2026, 11:17 | 11.2 | 11.2 mg/l |
| 13 Feb 2026, 12:26 | 11.5 | 11.5 mg/l |
| 28 Jan 2026, 11:18 | 11.4 | 11.4 mg/l |
| 14 Mar 2025, 14:43 | 12.1 | 12.1 mg/l |
| 25 Feb 2025, 12:21 | 11.3 | 11.3 mg/l |
| 24 Jan 2025, 13:48 | 12 | 12 mg/l |
| 20 Nov 2024, 11:41 | 11.8 | 11.8 mg/l |
| 23 Oct 2024, 10:44 | 9.99 | 9.99 mg/l |
| 19 Sep 2024, 10:18 | 8.42 | 8.42 mg/l |
| 30 Aug 2024, 11:30 | 7.83 | 7.83 mg/l |
| 15 Jul 2024, 09:21 | 9.2 | 9.2 mg/l |
| 14 May 2024, 13:00 | 9.63 | 9.63 mg/l |
| 23 Apr 2024, 10:47 | 10.9 | 10.9 mg/l |
| 20 Mar 2024, 12:19 | 10.1 | 10.1 mg/l |
| 29 Feb 2024, 12:53 | 11.4 | 11.4 mg/l |
| 16 Jan 2024, 12:04 | 12.4 | 12.4 mg/l |
| 8 Dec 2023, 10:42 | 10.8 | 10.8 mg/l |
| 22 Nov 2023, 09:22 | 10.4 | 10.4 mg/l |
| 17 Oct 2023, 11:20 | 10.2 | 10.2 mg/l |
Water temperature
code 0076 · °C
13.2 °C
Sampled 5 May 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 11:22 | 13.2 | 13.2 °C |
| 10 Apr 2026, 13:57 | 11.3 | 11.3 °C |
| 17 Mar 2026, 11:17 | 9.2 | 9.2 °C |
| 13 Feb 2026, 12:26 | 6.8 | 6.8 °C |
| 28 Jan 2026, 11:18 | 6 | 6 °C |
| 14 Mar 2025, 14:43 | 6.4 | 6.4 °C |
| 25 Feb 2025, 12:21 | 7.9 | 7.9 °C |
| 24 Jan 2025, 13:48 | 6 | 6 °C |
| 20 Nov 2024, 11:41 | 5.5 | 5.5 °C |
| 23 Oct 2024, 10:44 | 11.1 | 11.1 °C |
| 19 Sep 2024, 10:18 | 13.5 | 13.5 °C |
| 30 Aug 2024, 11:30 | 15.1 | 15.1 °C |
| 15 Jul 2024, 09:21 | 14.5 | 14.5 °C |
| 14 May 2024, 13:00 | 15.4 | 15.4 °C |
| 23 Apr 2024, 10:47 | 10.1 | 10.1 °C |
| 20 Mar 2024, 12:19 | 11.4 | 11.4 °C |
| 29 Feb 2024, 12:53 | 8.2 | 8.2 °C |
| 16 Jan 2024, 12:04 | 3 | 3 °C |
| 8 Dec 2023, 10:42 | 6.5 | 6.5 °C |
| 22 Nov 2023, 09:22 | 8.9 | 8.9 °C |
| 17 Oct 2023, 11:20 | 10 | 10 °C |
pH
code 0061
8.03
Sampled 5 May 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 11:22 | 8.03 | 8.03 |
| 10 Apr 2026, 13:57 | 8.14 | 8.14 |
| 17 Mar 2026, 11:17 | 7.83 | 7.83 |
| 13 Feb 2026, 12:26 | 8.06 | 8.06 |
| 28 Jan 2026, 11:18 | 8.04 | 8.04 |
| 14 Mar 2025, 14:43 | 8.24 | 8.24 |
| 25 Feb 2025, 12:21 | 8.01 | 8.01 |
| 24 Jan 2025, 13:48 | 8.05 | 8.05 |
| 20 Nov 2024, 11:41 | 7.82 | 7.82 |
| 23 Oct 2024, 10:44 | 7.89 | 7.89 |
| 19 Sep 2024, 10:18 | 7.74 | 7.74 |
| 30 Aug 2024, 11:30 | 7.6 | 7.6 |
| 15 Jul 2024, 09:21 | 8.04 | 8.04 |
| 14 May 2024, 13:00 | 8.01 | 8.01 |
| 23 Apr 2024, 10:47 | 8.15 | 8.15 |
| 20 Mar 2024, 12:19 | 7.77 | 7.77 |
| 29 Feb 2024, 12:53 | 8.04 | 8.04 |
| 16 Jan 2024, 12:04 | 8.07 | 8.07 |
| 8 Dec 2023, 10:42 | 7.91 | 7.91 |
| 22 Nov 2023, 09:22 | 7.96 | 7.96 |
| 17 Oct 2023, 11:20 | 7.78 | 7.78 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.03 mg/l
Sampled 5 May 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 11:22 | 0.03 | 0.03 mg/l |
| 10 Apr 2026, 13:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2026, 11:17 | 0.033 | 0.033 mg/l |
| 13 Feb 2026, 12:26 | 0.099 | 0.099 mg/l |
| 28 Jan 2026, 11:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Mar 2025, 14:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Feb 2025, 12:21 | 0.039 | 0.039 mg/l |
| 24 Jan 2025, 13:48 | 0.064 | 0.064 mg/l |
| 20 Nov 2024, 11:41 | 0.071 | 0.071 mg/l |
| 23 Oct 2024, 10:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Sep 2024, 10:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Aug 2024, 11:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2024, 09:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 May 2024, 13:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Apr 2024, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Mar 2024, 12:19 | 0.067 | 0.067 mg/l |
| 29 Feb 2024, 12:53 | 0.049 | 0.049 mg/l |
| 16 Jan 2024, 12:04 | 0.08 | 0.08 mg/l |
| 8 Dec 2023, 10:42 | 0.078 | 0.078 mg/l |
| 22 Nov 2023, 09:22 | 0.018 | 0.018 mg/l |
| 17 Oct 2023, 11:20 | 0.0051 | 0.0051 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.28 mg/l
Sampled 5 May 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 11:22 | 4.28 | 4.28 mg/l |
| 10 Apr 2026, 13:57 | 4.79 | 4.79 mg/l |
| 17 Mar 2026, 11:17 | 4.96 | 4.96 mg/l |
| 13 Feb 2026, 12:26 | 5.87 | 5.87 mg/l |
| 28 Jan 2026, 11:18 | 5.29 | 5.29 mg/l |
| 14 Mar 2025, 14:43 | 6.29 | 6.29 mg/l |
| 25 Feb 2025, 12:21 | 4.58 | 4.58 mg/l |
| 24 Jan 2025, 13:48 | 5.76 | 5.76 mg/l |
| 20 Nov 2024, 11:41 | 9.17 | 9.17 mg/l |
| 23 Oct 2024, 10:44 | 5.09 | 5.09 mg/l |
| 19 Sep 2024, 10:18 | 5.79 | 5.79 mg/l |
| 30 Aug 2024, 11:30 | 3.89 | 3.89 mg/l |
| 15 Jul 2024, 09:21 | 4.39 | 4.39 mg/l |
| 14 May 2024, 13:00 | 4.48 | 4.48 mg/l |
| 23 Apr 2024, 10:47 | 5.18 | 5.18 mg/l |
| 20 Mar 2024, 12:19 | 4.87 | 4.87 mg/l |
| 29 Feb 2024, 12:53 | 5.67 | 5.67 mg/l |
| 16 Jan 2024, 12:04 | 6.67 | 6.67 mg/l |
| 8 Dec 2023, 10:42 | 7.07 | 7.07 mg/l |
| 22 Nov 2023, 09:22 | 7.68 | 7.68 mg/l |
| 17 Oct 2023, 11:20 | 7.38 | 7.38 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.18 mg/l
Sampled 5 May 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 11:22 | 0.18 | 0.18 mg/l |
| 10 Apr 2026, 13:57 | 0.068 | 0.068 mg/l |
| 17 Mar 2026, 11:17 | 0.084 | 0.084 mg/l |
| 13 Feb 2026, 12:26 | 0.12 | 0.12 mg/l |
| 28 Jan 2026, 11:18 | 0.17 | 0.17 mg/l |
| 14 Mar 2025, 14:43 | 0.07 | 0.07 mg/l |
| 25 Feb 2025, 12:21 | 0.081 | 0.081 mg/l |
| 24 Jan 2025, 13:48 | 0.082 | 0.082 mg/l |
| 20 Nov 2024, 11:41 | 0.21 | 0.21 mg/l |
| 23 Oct 2024, 10:44 | 0.099 | 0.099 mg/l |
| 19 Sep 2024, 10:18 | 0.08 | 0.08 mg/l |
| 30 Aug 2024, 11:30 | 0.082 | 0.082 mg/l |
| 15 Jul 2024, 09:21 | 0.1 | 0.1 mg/l |
| 14 May 2024, 13:00 | 0.068 | 0.068 mg/l |
| 23 Apr 2024, 10:47 | 0.065 | 0.065 mg/l |
| 20 Mar 2024, 12:19 | 0.078 | 0.078 mg/l |
| 29 Feb 2024, 12:53 | 0.086 | 0.086 mg/l |
| 16 Jan 2024, 12:04 | 0.079 | 0.079 mg/l |
| 8 Dec 2023, 10:42 | 0.098 | 0.098 mg/l |
| 22 Nov 2023, 09:22 | 0.083 | 0.083 mg/l |
| 17 Oct 2023, 11:20 | 0.16 | 0.16 mg/l |
Turbidity
code 6396 · NTU
28 NTU
Sampled 29 Feb 2024, 2.6 years ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Feb 2024, 12:53 | 28 | 28 NTU |
| 16 Jan 2024, 12:04 | 14 | 14 NTU |
| 8 Dec 2023, 10:42 | 100 | 100 NTU |
| 22 Nov 2023, 09:22 | 16 | 16 NTU |
| 17 Oct 2023, 11:20 | 14 | 14 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
996 µS/cm
Sampled 5 May 2026, 5 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 11:22 | 996 | 996 µS/cm |
| 10 Apr 2026, 13:57 | 960 | 960 µS/cm |
| 17 Mar 2026, 11:17 | 748 | 748 µS/cm |
| 13 Feb 2026, 12:26 | 613 | 613 µS/cm |
| 28 Jan 2026, 11:18 | 451 | 451 µS/cm |
| 14 Mar 2025, 14:43 | 935 | 935 µS/cm |
| 25 Feb 2025, 12:21 | 559 | 559 µS/cm |
| 24 Jan 2025, 13:48 | 903 | 903 µS/cm |
| 20 Nov 2024, 11:41 | 554 | 554 µS/cm |
| 23 Oct 2024, 10:44 | 665 | 665 µS/cm |
| 19 Sep 2024, 10:18 | 1028 | 1028 µS/cm |
| 30 Aug 2024, 11:30 | 1054 | 1054 µS/cm |
| 15 Jul 2024, 09:21 | 1007 | 1007 µS/cm |
| 14 May 2024, 13:00 | 937 | 937 µS/cm |
| 23 Apr 2024, 10:47 | 871 | 871 µS/cm |
| 20 Mar 2024, 12:19 | 711 | 711 µS/cm |
| 29 Feb 2024, 12:53 | 788 | 788 µS/cm |
| 16 Jan 2024, 12:04 | 876 | 876 µS/cm |
| 8 Dec 2023, 10:42 | 639 | 639 µS/cm |
| 22 Nov 2023, 09:22 | 796 | 796 µS/cm |
| 17 Oct 2023, 11:20 | 831 | 831 µS/cm |
Everything measured here
63 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 63 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 21 | Oct 2023 – May 2026 | 95.5% 5 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 21 | Oct 2023 – May 2026 | 9.99 mg/l 5 May 2026 |
| Temperature of Water 0076 | River water | 21 | Oct 2023 – May 2026 | 13.2 °C 5 May 2026 |
| pH 0061 | River water | 21 | Oct 2023 – May 2026 | 8.03 5 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Oct 2023 – May 2026 | 0.03 mg/l 5 May 2026 |
| Nitrate as N 0117 | River water | 21 | Oct 2023 – May 2026 | 4.28 mg/l 5 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Oct 2023 – May 2026 | 0.18 mg/l 5 May 2026 |
| Turbidity 6396 | River water | 5 | Oct 2023 – Feb 2024 | 28 NTU 29 Feb 2024 |
| Conductivity at 25 C 0077 | River water | 21 | Oct 2023 – May 2026 | 996 µS/cm 5 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 4 | May 2024 – Mar 2025 | below 0.002 µg/l 14 Mar 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 4 | May 2024 – Mar 2025 | below 0.004 µg/l 14 Mar 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 4 | May 2024 – Mar 2025 | below 0.005 µg/l 14 Mar 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Oct 2023 – May 2026 | 210 mg/l 5 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Oct 2023 – May 2026 | 0.00069 mg/l 5 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 17 | Feb 2024 – May 2026 | 1.4 mg/l 5 May 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 5 | Oct 2023 – Feb 2024 | 1.5 µg/l 29 Feb 2024 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 4 | May 2024 – Mar 2025 | below 0.002 µg/l 14 Mar 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 4 | May 2024 – Mar 2025 | below 0.002 µg/l 14 Mar 2025 |
| Nitrite as N 0118 | River water | 21 | Oct 2023 – May 2026 | 0.021 mg/l 5 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Oct 2023 – May 2026 | 4.3 mg/l 5 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 4 | May 2024 – Mar 2025 | 0.0018 µg/l 14 Mar 2025 |
| Perfluorobutanoic acid 2995 | River water | 4 | May 2024 – Mar 2025 | 0.002 µg/l 14 Mar 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 4 | May 2024 – Mar 2025 | below 0.002 µg/l 14 Mar 2025 |
| Perfluorodecanoic acid 8892 | River water | 4 | May 2024 – Mar 2025 | below 0.002 µg/l 14 Mar 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 4 | May 2024 – Mar 2025 | below 0.005 µg/l 14 Mar 2025 |
| Perfluorododecanoic acid 8894 | River water | 4 | May 2024 – Mar 2025 | below 0.002 µg/l 14 Mar 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluoroheptanoic acid 8889 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 4 | May 2024 – Mar 2025 | 0.00059 µg/l 14 Mar 2025 |
| Perfluorohexanoic acid 8888 | River water | 4 | May 2024 – Mar 2025 | 0.0015 µg/l 14 Mar 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluorononanoic acid 8891 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 4 | May 2024 – Mar 2025 | below 0.002 µg/l 14 Mar 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 4 | May 2024 – Mar 2025 | below 0.001 µg/l 14 Mar 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluorooctanoic acid 8890 | River water | 4 | May 2024 – Mar 2025 | 0.00053 µg/l 14 Mar 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 4 | May 2024 – Mar 2025 | below 0.0005 µg/l 14 Mar 2025 |
| Perfluoropentanoic acid 8887 | River water | 4 | May 2024 – Mar 2025 | 0.0017 µg/l 14 Mar 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 4 | May 2024 – Mar 2025 | below 0.006 µg/l 14 Mar 2025 |
| Perfluorotridecanoic acid 2955 | River water | 3 | May 2024 – Mar 2025 | below 0.005 µg/l 14 Mar 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 4 | May 2024 – Mar 2025 | below 0.004 µg/l 14 Mar 2025 |
| Perfluoroundecanoic acid 8893 | River water | 4 | May 2024 – Mar 2025 | below 0.002 µg/l 14 Mar 2025 |
| Solids, Suspended at 105 C 0135 | River water | 5 | Oct 2023 – Feb 2024 | 30 mg/l 29 Feb 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.