Tributary of Leam at Hill, Leamington Hastings - Leam
EA name: TRIB OF LEAM AT HILL, LEAMINGTON HASTING (also listed as “SSN0175 TRIB OF LEAM AT HILL, LEAMINGTON HASTINGS - LEAM”)
Environment Agency sampling point MD-SSN0175 · 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
- 17 Mar 2026, 10:207 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
- 24 since 30 Jan 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 445800, 267331As published, to the nearest 1 m. Open in a map
- River, by its own name
- Leam
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
11 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
75.3%
Sampled 1 Dec 2025, 10 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Dec 2025, 14:14 | 75.3 | 75.3% |
| 10 Jun 2025, 10:13 | 77.4 | 77.4% |
| 23 Apr 2025, 13:29 | 96.9 | 96.9% |
| 3 Feb 2025, 11:42 | 96.1 | 96.1% |
| 2 Oct 2024, 11:54 | 76.8 | 76.8% |
| 21 Jun 2024, 11:42 | 76.9 | 76.9% |
| 10 May 2024, 10:53 | 100 | 100% |
| 8 Apr 2024, 10:39 | 100.1 | 100.1% |
| 14 Mar 2024, 10:23 | 94.6 | 94.6% |
| 26 Feb 2024, 11:20 | 93.4 | 93.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.53 mg/l
Sampled 1 Dec 2025, 10 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Dec 2025, 14:14 | 8.53 | 8.53 mg/l |
| 10 Jun 2025, 10:13 | 7.79 | 7.79 mg/l |
| 23 Apr 2025, 13:29 | 10.8 | 10.8 mg/l |
| 3 Feb 2025, 11:42 | 12 | 12 mg/l |
| 2 Oct 2024, 11:54 | 8.07 | 8.07 mg/l |
| 21 Jun 2024, 11:42 | 7.5 | 7.5 mg/l |
| 10 May 2024, 10:53 | 9.48 | 9.48 mg/l |
| 8 Apr 2024, 10:39 | 10.9 | 10.9 mg/l |
| 14 Mar 2024, 10:23 | 10.6 | 10.6 mg/l |
| 26 Feb 2024, 11:20 | 11.5 | 11.5 mg/l |
Water temperature
code 0076 · °C
9.7 °C
Sampled 1 Dec 2025, 10 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Dec 2025, 14:14 | 9.7 | 9.7 °C |
| 10 Jun 2025, 10:13 | 14.9 | 14.9 °C |
| 23 Apr 2025, 13:29 | 10.6 | 10.6 °C |
| 3 Feb 2025, 11:42 | 5.7 | 5.7 °C |
| 2 Oct 2024, 11:54 | 13 | 13 °C |
| 21 Jun 2024, 11:42 | 16.4 | 16.4 °C |
| 10 May 2024, 10:53 | 17.8 | 17.8 °C |
| 8 Apr 2024, 10:39 | 11.3 | 11.3 °C |
| 14 Mar 2024, 10:23 | 10.2 | 10.2 °C |
| 26 Feb 2024, 11:20 | 6.5 | 6.5 °C |
pH
code 0061
7.71
Sampled 1 Dec 2025, 10 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Dec 2025, 14:14 | 7.71 | 7.71 |
| 10 Jun 2025, 10:13 | 7.53 | 7.53 |
| 23 Apr 2025, 13:29 | 7.92 | 7.92 |
| 3 Feb 2025, 11:42 | 8.03 | 8.03 |
| 2 Oct 2024, 11:54 | 7.68 | 7.68 |
| 21 Jun 2024, 11:42 | 7.83 | 7.83 |
| 10 May 2024, 10:53 | 7.99 | 7.99 |
| 8 Apr 2024, 10:39 | 8.21 | 8.21 |
| 14 Mar 2024, 10:23 | 8 | 8 |
| 26 Feb 2024, 11:20 | 8.07 | 8.07 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 1 Dec 2025, 10 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Dec 2025, 14:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jun 2025, 10:13 | 0.57 | 0.57 mg/l |
| 23 Apr 2025, 13:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Feb 2025, 11:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2024, 11:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jun 2024, 11:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 May 2024, 10:53 | 0.032 | 0.032 mg/l |
| 8 Apr 2024, 10:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Mar 2024, 10:23 | 0.067 | 0.067 mg/l |
| 26 Feb 2024, 11:20 | 0.036 | 0.036 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.2 mg/l
Sampled 1 Dec 2025, 10 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Dec 2025, 14:14 | 3.2 | 3.2 mg/l |
| 10 Jun 2025, 10:13 | 0.194 | 0.194 mg/l |
| 23 Apr 2025, 13:29 | 1.39 | 1.39 mg/l |
| 3 Feb 2025, 11:42 | 8.09 | 8.09 mg/l |
| 2 Oct 2024, 11:54 | 9.48 | 9.48 mg/l |
| 21 Jun 2024, 11:42 | 0.196 | 0.196 mg/l |
| 10 May 2024, 10:53 | 0.565 | 0.565 mg/l |
| 8 Apr 2024, 10:39 | 2.89 | 2.89 mg/l |
| 14 Mar 2024, 10:23 | 5.87 | 5.87 mg/l |
| 26 Feb 2024, 11:20 | 6.19 | 6.19 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.078 mg/l
Sampled 1 Dec 2025, 10 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Dec 2025, 14:14 | 0.078 | 0.078 mg/l |
| 10 Jun 2025, 10:13 | 0.4 | 0.4 mg/l |
| 23 Apr 2025, 13:29 | 0.12 | 0.12 mg/l |
| 3 Feb 2025, 11:42 | 0.052 | 0.052 mg/l |
| 2 Oct 2024, 11:54 | 0.1 | 0.1 mg/l |
| 21 Jun 2024, 11:42 | 0.13 | 0.13 mg/l |
| 10 May 2024, 10:53 | 0.047 | 0.047 mg/l |
| 8 Apr 2024, 10:39 | <0.01 | below 0.01 mg/l (not detected above this) |
| 14 Mar 2024, 10:23 | 0.071 | 0.071 mg/l |
| 26 Feb 2024, 11:20 | 0.076 | 0.076 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1261 µS/cm
Sampled 1 Dec 2025, 10 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Dec 2025, 14:14 | 1261 | 1261 µS/cm |
| 10 Jun 2025, 10:13 | 1332 | 1332 µS/cm |
| 23 Apr 2025, 13:29 | 1009 | 1009 µS/cm |
| 3 Feb 2025, 11:42 | 901 | 901 µS/cm |
| 2 Oct 2024, 11:54 | 632 | 632 µS/cm |
| 21 Jun 2024, 11:42 | 869 | 869 µS/cm |
| 10 May 2024, 10:53 | 822 | 822 µS/cm |
| 8 Apr 2024, 10:39 | 761 | 761 µS/cm |
| 14 Mar 2024, 10:23 | 803 | 803 µS/cm |
| 26 Feb 2024, 11:20 | 781 | 781 µS/cm |
Everything measured here
114 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 114 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 10 | Feb 2024 – Dec 2025 | 75.3% 1 Dec 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 10 | Feb 2024 – Dec 2025 | 8.53 mg/l 1 Dec 2025 |
| Temperature of Water 0076 | River water | 10 | Feb 2024 – Dec 2025 | 9.7 °C 1 Dec 2025 |
| pH 0061 | River water | 10 | Feb 2024 – Dec 2025 | 7.71 1 Dec 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 10 | Feb 2024 – Dec 2025 | below 0.03 mg/l 1 Dec 2025 |
| Nitrate as N 0117 | River water | 10 | Feb 2024 – Dec 2025 | 3.2 mg/l 1 Dec 2025 |
| Orthophosphate, reactive as P 0180 | River water | 10 | Feb 2024 – Dec 2025 | 0.078 mg/l 1 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 10 | Feb 2024 – Dec 2025 | 1261 µS/cm 1 Dec 2025 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 10 | Feb 2024 – Dec 2025 | 200 mg/l 1 Dec 2025 |
| Aluminium, Dissolved 6037 | River water | 1 | Apr 2025 – Apr 2025 | below 20 µg/l 23 Apr 2025 |
| Aminomethylphosphonic acid 7125 | River water | 3 | Apr 2025 – Dec 2025 | below 0.1 µg/l 1 Dec 2025 |
| Ammonia un-ionised as N 0119 | River water | 10 | Feb 2024 – Dec 2025 | below 0.00028 mg/l 1 Dec 2025 |
| Barium, Dissolved 9446 | River water | 1 | Apr 2025 – Apr 2025 | 41 µg/l 23 Apr 2025 |
| Boron, Dissolved 9447 | River water | 1 | Apr 2025 – Apr 2025 | below 100 µg/l 23 Apr 2025 |
| Cadmium, Dissolved 0106 | River water | 1 | Apr 2025 – Apr 2025 | 0.019 µg/l 23 Apr 2025 |
| Calcium, Dissolved 0239 | River water | 1 | Apr 2025 – Apr 2025 | 120 mg/l 23 Apr 2025 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 5 | Oct 2024 – Dec 2025 | 9 mg/l 1 Dec 2025 |
| Chloride 0172 | River water | 10 | Feb 2024 – Dec 2025 | 200 mg/l 1 Dec 2025 |
| Chromium, Dissolved 3409 | River water | 1 | Apr 2025 – Apr 2025 | below 0.5 µg/l 23 Apr 2025 |
| Copper : BLM Bioavailable 4821 | River water | 1 | Apr 2025 – Apr 2025 | 0.12 µg/l 23 Apr 2025 |
| Copper, Dissolved 6450 | River water | 1 | Apr 2025 – Apr 2025 | 3.6 µg/l 23 Apr 2025 |
| eDNA Report 3047 | River water | 2 | May 2024 – Oct 2024 | 1 text result 2 Oct 2024 |
| Environmental DNA Filtration 3064 | River water | 2 | May 2024 – Oct 2024 | DNA Stored 2 Oct 2024 |
| Flow Type 2896 | River water | 12 | Feb 2024 – Dec 2025 | Moderate Flow 1 Dec 2025 |
| Glyphosate 3007 | River water | 3 | Apr 2025 – Dec 2025 | below 0.1 µg/l 1 Dec 2025 |
| Hardness, Calcium 0163 | River water | 1 | Apr 2025 – Apr 2025 | 300 mg/l 23 Apr 2025 |
| Hardness, Total as CaCO3 0158 | River water | 1 | Apr 2025 – Apr 2025 | 357 mg/l 23 Apr 2025 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Iron, Dissolved 6460 | River water | 1 | Apr 2025 – Apr 2025 | 49 µg/l 23 Apr 2025 |
| LCMS Screen : Semi Quantitative 7299 | River water | 1 | Dec 2025 – Dec 2025 | 1 text result 1 Dec 2025 |
| Lead : BLM Bioavailable 3377 | River water | 1 | Apr 2025 – Apr 2025 | 0.01 µg/l 23 Apr 2025 |
| Lead, Dissolved 0052 | River water | 1 | Apr 2025 – Apr 2025 | below 0.1 µg/l 23 Apr 2025 |
| Lithium, Dissolved 4201 | River water | 1 | Apr 2025 – Apr 2025 | below 100 µg/l 23 Apr 2025 |
| Magnesium, Dissolved 0235 | River water | 1 | Apr 2025 – Apr 2025 | 14 mg/l 23 Apr 2025 |
| Manganese : BLM Bioavailable 4820 | River water | 1 | Apr 2025 – Apr 2025 | 15 µg/l 23 Apr 2025 |
| Manganese, Dissolved 6458 | River water | 1 | Apr 2025 – Apr 2025 | 31 µg/l 23 Apr 2025 |
| Mitochondrial marker : Fish 12S 2857 | River water | 2 | May 2024 – Oct 2024 | Present 2 Oct 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Nickel : BLM Bioavailable 3878 | River water | 1 | Apr 2025 – Apr 2025 | 0.61 µg/l 23 Apr 2025 |
| Nickel, Dissolved 3410 | River water | 1 | Apr 2025 – Apr 2025 | 2.5 µg/l 23 Apr 2025 |
| Nitrite as N 0118 | River water | 10 | Feb 2024 – Dec 2025 | 0.004 mg/l 1 Dec 2025 |
| Nitrogen, Total as N 9686 | River water | 9 | Feb 2024 – Dec 2025 | 4.1 mg/l 1 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 10 | Feb 2024 – Dec 2025 | 3.2 mg/l 1 Dec 2025 |
| No flow /No sample 7668 | River water | 11 | Jan 2024 – Nov 2025 | No flow/discharge at sampling point 10 Nov 2025 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Dec 2025 – Dec 2025 | 0.0011 µg/l 1 Dec 2025 |
| Perfluorobutanoic acid 2995 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorodecanoic acid 8892 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Dec 2025 – Dec 2025 | below 0.005 µg/l 1 Dec 2025 |
| Perfluorododecanoic acid 8894 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorohexanoic acid 8888 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorononanoic acid 8891 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorooctanoic acid 8890 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoropentanoic acid 8887 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Dec 2025 – Dec 2025 | below 0.006 µg/l 1 Dec 2025 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Phosphorus, Total as P 0348 | River water | 9 | Feb 2024 – Dec 2025 | 0.09 mg/l 1 Dec 2025 |
| Potassium, Dissolved 0209 | River water | 1 | Apr 2025 – Apr 2025 | 7.8 mg/l 23 Apr 2025 |
| Preparation: DNA 5923 | River water | 2 | May 2024 – Oct 2024 | Done 2 Oct 2024 |
| Silica, reactive as SiO2 0182 | River water | 10 | Feb 2024 – Dec 2025 | 7.3 mg/l 1 Dec 2025 |
| Sodium, Dissolved 0205 | River water | 1 | Apr 2025 – Apr 2025 | 80 mg/l 23 Apr 2025 |
| Solids, Suspended at 105 C 0135 | River water | 10 | Feb 2024 – Dec 2025 | 6.6 mg/l 1 Dec 2025 |
| Strontium, Filtered 6693 | River water | 1 | Apr 2025 – Apr 2025 | 410 µg/l 23 Apr 2025 |
| Sulphate, Dissolved as SO4 7859 | River water | 1 | Apr 2025 – Apr 2025 | 70 mg/l 23 Apr 2025 |
| Trifluoroacetic acid 2872 | River water | 1 | Mar 2026 – Mar 2026 | 3.8 µg/l 17 Mar 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 1 | Apr 2025 – Apr 2025 | 1.2 µg/l 23 Apr 2025 |
| Zinc, Dissolved 3408 | River water | 1 | Apr 2025 – Apr 2025 | 4.6 µg/l 23 Apr 2025 |
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.