Bottom Farm
EA name: BOTTOM FARM (also listed as “RSN0542 BOTTOM FARM”)
Environment Agency sampling point AN-RSN0542 · 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
- 2 Jul 2026, 11:283 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 7 since 28 Jan 2026 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 514134, 322761As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- New DikePlaced by position alone, on a line whose map name differs from its own, 5 m from the line.
- Next gauge downstream
- Dowsby Fen On the South Forty Foot Drain · 9.1 km along the river
- Why it was sampled
- Monitoring (national agency policy) (7 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
123.7%
Sampled 2 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:28 | 123.7 | 123.7% |
| 15 Jun 2026, 12:21 | 108.3 | 108.3% |
| 21 May 2026, 10:00 | 101.2 | 101.2% |
| 24 Apr 2026, 11:21 | 103.3 | 103.3% |
| 2 Mar 2026, 12:35 | 85.4 | 85.4% |
| 12 Feb 2026, 10:12 | 68.2 | 68.2% |
| 28 Jan 2026, 11:33 | 80.1 | 80.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.9 mg/l
Sampled 2 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:28 | 10.9 | 10.9 mg/l |
| 15 Jun 2026, 12:21 | 10.3 | 10.3 mg/l |
| 21 May 2026, 10:00 | 10 | 10 mg/l |
| 24 Apr 2026, 11:21 | 11.4 | 11.4 mg/l |
| 2 Mar 2026, 12:35 | 9.48 | 9.48 mg/l |
| 12 Feb 2026, 10:12 | 8.12 | 8.12 mg/l |
| 28 Jan 2026, 11:33 | 10 | 10 mg/l |
Water temperature
code 0076 · °C
21.6 °C
Sampled 2 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:28 | 21.6 | 21.6 °C |
| 15 Jun 2026, 12:21 | 17.4 | 17.4 °C |
| 21 May 2026, 10:00 | 15.7 | 15.7 °C |
| 24 Apr 2026, 11:21 | 10.8 | 10.8 °C |
| 2 Mar 2026, 12:35 | 10.6 | 10.6 °C |
| 12 Feb 2026, 10:12 | 7.7 | 7.7 °C |
| 28 Jan 2026, 11:33 | 5.8 | 5.8 °C |
pH
code 0061
8
Sampled 2 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:28 | 8 | 8 |
| 15 Jun 2026, 12:21 | 8.12 | 8.12 |
| 21 May 2026, 10:00 | 8.05 | 8.05 |
| 24 Apr 2026, 11:21 | 8.04 | 8.04 |
| 2 Mar 2026, 12:35 | 7.02 | 7.02 |
| 12 Feb 2026, 10:12 | 6.84 | 6.84 |
| 28 Jan 2026, 11:33 | 7.57 | 7.57 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.0054 mg/l
Sampled 2 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:28 | 0.0054 | 0.0054 mg/l |
| 15 Jun 2026, 12:21 | 0.0075 | 0.0075 mg/l |
| 21 May 2026, 10:00 | 0.023 | 0.023 mg/l |
| 24 Apr 2026, 11:21 | <0.002 | below 0.002 mg/l (not detected above this) |
| 2 Mar 2026, 12:35 | 1.4 | 1.4 mg/l |
| 12 Feb 2026, 10:12 | 1.7 | 1.7 mg/l |
| 28 Jan 2026, 11:33 | 1.9 | 1.9 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.025 mg/l
Sampled 2 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:28 | 0.025 | 0.025 mg/l |
| 15 Jun 2026, 12:21 | 0.0228 | 0.0228 mg/l |
| 21 May 2026, 10:00 | 0.217 | 0.217 mg/l |
| 24 Apr 2026, 11:21 | 0.842 | 0.842 mg/l |
| 2 Mar 2026, 12:35 | 14.9 | 14.9 mg/l |
| 12 Feb 2026, 10:12 | 17.9 | 17.9 mg/l |
| 28 Jan 2026, 11:33 | 18.9 | 18.9 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0014 mg/l
Sampled 2 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:28 | 0.0014 | 0.0014 mg/l |
| 15 Jun 2026, 12:21 | 0.0016 | 0.0016 mg/l |
| 21 May 2026, 10:00 | 0.002 | 0.002 mg/l |
| 24 Apr 2026, 11:21 | 0.0031 | 0.0031 mg/l |
| 2 Mar 2026, 12:35 | 0.02 | 0.02 mg/l |
| 12 Feb 2026, 10:12 | 0.063 | 0.063 mg/l |
| 28 Jan 2026, 11:33 | 0.026 | 0.026 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1238 µS/cm
Sampled 2 Jul 2026, 3 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:28 | 1238 | 1238 µS/cm |
| 15 Jun 2026, 12:21 | 1273 | 1273 µS/cm |
| 21 May 2026, 10:00 | 1575 | 1575 µS/cm |
| 24 Apr 2026, 11:21 | 1748 | 1748 µS/cm |
| 2 Mar 2026, 12:35 | 2017 | 2017 µS/cm |
| 12 Feb 2026, 10:12 | 1996 | 1996 µS/cm |
| 28 Jan 2026, 11:33 | 2007 | 2007 µS/cm |
Everything measured here
152 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 152 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 7 | Jan 2026 – Jul 2026 | 123.7% 2 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 7 | Jan 2026 – Jul 2026 | 10.9 mg/l 2 Jul 2026 |
| Temperature of Water 0076 | River water | 7 | Jan 2026 – Jul 2026 | 21.6 °C 2 Jul 2026 |
| pH 0061 | River water | 7 | Jan 2026 – Jul 2026 | 8 2 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 7 | Jan 2026 – Jul 2026 | 0.0054 mg/l 2 Jul 2026 |
| Nitrate as N 0117 | River water | 7 | Jan 2026 – Jul 2026 | 0.025 mg/l 2 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 7 | Jan 2026 – Jul 2026 | 0.0014 mg/l 2 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 7 | Jan 2026 – Jul 2026 | 1238 µS/cm 2 Jul 2026 |
| (Perfluorohexanesulfonyl)[3-(trimethylazaniumyl)propyl]azanide 2890 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 2 Jul 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 2 Jul 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| 5:3 Fluorotelomer betaine 2886 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 2 Jul 2026 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | May 2026 – Jul 2026 | 0.0071 µg/l 2 Jul 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 2 Jul 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 2 | May 2026 – Jun 2026 | below 0.004 µg/l 15 Jun 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Aldicarb 9344 | River water | 7 | Jan 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Aldicarb sulfoxide 8806 | River water | 7 | Jan 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Aldoxycarb :- {Aldicarb Sulfone} 8807 | River water | 7 | Jan 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 7 | Jan 2026 – Jul 2026 | 270 mg/l 2 Jul 2026 |
| Aluminium, Dissolved 6037 | River water | 7 | Jan 2026 – Jul 2026 | below 20 µg/l 2 Jul 2026 |
| Aminomethylphosphonic acid 7125 | River water | 7 | Jan 2026 – Jul 2026 | 0.16 µg/l 2 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 7 | Jan 2026 – Jul 2026 | 0.00023 mg/l 2 Jul 2026 |
| Asulam 3004 | River water | 7 | Jan 2026 – Jul 2026 | below 0.02 µg/l 2 Jul 2026 |
| Azoxystrobin 5050 | River water | 7 | Jan 2026 – Jul 2026 | below 0.02 µg/l 2 Jul 2026 |
| Barium, Dissolved 9446 | River water | 7 | Jan 2026 – Jul 2026 | 28 µg/l 2 Jul 2026 |
| Benzo(a)Pyrene 6399 | River water | 6 | Jan 2026 – Jun 2026 | 0.00077 µg/l 15 Jun 2026 |
| Benzo(b)Fluoranthene 0731 | River water | 6 | Jan 2026 – Jun 2026 | 0.00084 µg/l 15 Jun 2026 |
| Benzo(g,h,i)Perylene 0714 | River water | 6 | Jan 2026 – Jun 2026 | 0.00055 µg/l 15 Jun 2026 |
| Benzo(k)Fluoranthene 0733 | River water | 6 | Jan 2026 – Jun 2026 | 0.00045 µg/l 15 Jun 2026 |
| Boron, Dissolved 9447 | River water | 7 | Jan 2026 – Jul 2026 | 430 µg/l 2 Jul 2026 |
| Cadmium, Dissolved 0106 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Calcium, Dissolved 0239 | River water | 7 | Jan 2026 – Jul 2026 | 170 mg/l 2 Jul 2026 |
| Carbaryl 9343 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Carbendazim 3475 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Carbetamide 9073 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Carbofuran 3086 | River water | 7 | Jan 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 7 | Jan 2026 – Jul 2026 | 9.7 mg/l 2 Jul 2026 |
| Chloridazon 6760 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Chloride 0172 | River water | 7 | Jan 2026 – Jul 2026 | 68 mg/l 2 Jul 2026 |
| Chlorotoluron 9348 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Chloroxuron 3399 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Chromium, Dissolved 3409 | River water | 7 | Jan 2026 – Jul 2026 | below 0.5 µg/l 2 Jul 2026 |
| cis-Permethrin 9341 | River water | 6 | Jan 2026 – Jul 2026 | below 0.0001 µg/l 2 Jul 2026 |
| Copper : BLM Bioavailable 4821 | River water | 7 | Jan 2026 – Jul 2026 | 0.02 µg/l 2 Jul 2026 |
| Copper, Dissolved 6450 | River water | 7 | Jan 2026 – Jul 2026 | 0.69 µg/l 2 Jul 2026 |
| Cypermethrin 0073 | River water | 5 | Jan 2026 – Jul 2026 | below 0.00003 µg/l 2 Jul 2026 |
| Cypermethrin Identification 5446 | River water | 6 | Jan 2026 – Jul 2026 | 1 text result 2 Jul 2026 |
| Di(2-ethylhexyl) phthalate :- {DEHP} 6724 | River water | 4 | Jan 2026 – Apr 2026 | below 0.2 µg/l 24 Apr 2026 |
| Diflurobenzuron 9345 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Diuron 3811 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Ethiofencarb 6955 | River water | 7 | Jan 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Ethirimol 5047 | River water | 7 | Jan 2026 – Jul 2026 | below 0.05 µg/l 2 Jul 2026 |
| Fenuron 9339 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Flow Type 2896 | River water | 7 | Jan 2026 – Jul 2026 | Ponded / Still 2 Jul 2026 |
| Fluoranthene 0736 | River water | 5 | Feb 2026 – Jun 2026 | 0.0036 µg/l 15 Jun 2026 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 2 | Feb 2026 – May 2026 | 1 text result 21 May 2026 |
| Glyphosate 3007 | River water | 7 | Jan 2026 – Jul 2026 | below 0.1 µg/l 2 Jul 2026 |
| Hardness, Calcium 0163 | River water | 7 | Jan 2026 – Jul 2026 | 424 mg/l 2 Jul 2026 |
| Hardness, Total as CaCO3 0158 | River water | 7 | Jan 2026 – Jul 2026 | 560 mg/l 2 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 6 | Jan 2026 – Jun 2026 | 0.00066 µg/l 15 Jun 2026 |
| Iron, Dissolved 6460 | River water | 7 | Jan 2026 – Jul 2026 | 53 µg/l 2 Jul 2026 |
| Isoproturon 3117 | River water | 4 | Jan 2026 – Apr 2026 | below 0.01 µg/l 24 Apr 2026 |
| Lead : BLM Bioavailable 3377 | River water | 7 | Jan 2026 – Jul 2026 | 0.01 µg/l 2 Jul 2026 |
| Lead, Dissolved 0052 | River water | 7 | Jan 2026 – Jul 2026 | below 0.1 µg/l 2 Jul 2026 |
| Linuron 3118 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Lithium, Dissolved 4201 | River water | 7 | Jan 2026 – Jul 2026 | below 100 µg/l 2 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 7 | Jan 2026 – Jul 2026 | 33 mg/l 2 Jul 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 7 | Jan 2026 – Jul 2026 | 2.8 µg/l 2 Jul 2026 |
| Manganese, Dissolved 6458 | River water | 7 | Jan 2026 – Jul 2026 | below 10 µg/l 2 Jul 2026 |
| Methabenzthiazuron 7053 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Methiocarb 6971 | River water | 7 | Jan 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Methomyl 6972 | River water | 7 | Jan 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Metoxuron 3130 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Metsulfuron-methyl 9861 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Monolinuron 3925 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Monuron 3400 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 2 Jul 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 2 Jul 2026 |
| Neburon 9756 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 µg/l 2 Jul 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 7 | Jan 2026 – Jul 2026 | 1.1 µg/l 2 Jul 2026 |
| Nickel, Dissolved 3410 | River water | 7 | Jan 2026 – Jul 2026 | 4.5 µg/l 2 Jul 2026 |
| Nitrite as N 0118 | River water | 7 | Jan 2026 – Jul 2026 | below 0.001 mg/l 2 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 7 | Jan 2026 – Jul 2026 | 0.026 mg/l 2 Jul 2026 |
| Oxamyl 6980 | River water | 7 | Jan 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Perfluorobutanoic acid 2995 | River water | 3 | May 2026 – Jul 2026 | 0.0014 µg/l 2 Jul 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Perfluorodecanoic acid 8892 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | May 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Perfluorododecanoic acid 8894 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 2 Jul 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluoroheptanoic acid 8889 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Perfluorohexane sulfonamido amine 2874 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorohexanoic acid 8888 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorononanoic acid 8891 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 2 Jul 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Perfluorooctanoate anion 9274 | River water | 7 | Jan 2026 – Jul 2026 | below 0.0006 µg/l 2 Jul 2026 |
| Perfluorooctanoic acid 8890 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluorooctylsulphonate anion 9276 | River water | 7 | Jan 2026 – Jul 2026 | 0.00019 µg/l 2 Jul 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 2 Jul 2026 |
| Perfluoropentanoic acid 8887 | River water | 3 | May 2026 – Jul 2026 | 0.0022 µg/l 2 Jul 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | May 2026 – Jul 2026 | below 0.006 µg/l 2 Jul 2026 |
| Perfluorotridecanoic acid 2955 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 2 Jul 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 2 Jul 2026 |
| Perfluoroundecanoic acid 8893 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 2 Jul 2026 |
| Phosphorus, Total as P 0348 | River water | 7 | Jan 2026 – Jul 2026 | below 0.01 mg/l 2 Jul 2026 |
| Potassium, Dissolved 0209 | River water | 7 | Jan 2026 – Jul 2026 | 6.1 mg/l 2 Jul 2026 |
| Propoxur 6987 | River water | 7 | Jan 2026 – Jul 2026 | below 0.005 µg/l 2 Jul 2026 |
| Silica, reactive as SiO2 0182 | River water | 7 | Jan 2026 – Jul 2026 | 0.54 mg/l 2 Jul 2026 |
| Sodium, Dissolved 0205 | River water | 7 | Jan 2026 – Jul 2026 | 68 mg/l 2 Jul 2026 |
| Solids, Suspended at 105 C 0135 | River water | 7 | Jan 2026 – Jul 2026 | 4.1 mg/l 2 Jul 2026 |
| Strontium, Filtered 6693 | River water | 7 | Jan 2026 – Jul 2026 | 800 µg/l 2 Jul 2026 |
| Sulcotrione 5042 | River water | 7 | Jan 2026 – Jul 2026 | below 0.1 µg/l 2 Jul 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 7 | Jan 2026 – Jul 2026 | 320 mg/l 2 Jul 2026 |
| trans-Permethrin 9342 | River water | 5 | Jan 2026 – Jul 2026 | below 0.0001 µg/l 2 Jul 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 7 | Jan 2026 – Jul 2026 | 0.38 µg/l 2 Jul 2026 |
| Zinc, Dissolved 3408 | River water | 7 | Jan 2026 – Jul 2026 | 1.6 µg/l 2 Jul 2026 |
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.