Weir Wood Reservoir Raw Water

EA name: WEIR WOOD RESERVOIR RAW WATER
Environment Agency sampling point SO-E0000421 · 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
10 Jul 2026, 09:273 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
34 since 26 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
Latest sample
Pond / lake / reservoir water Environmental monitoring statutory (EU directives)
Where
National Grid 540724, 135119As 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
Not placedNearest line is 64 m away and its name does not agree. The river map cannot say which watercourse this is.
Next gauge downstream
Not known
Why it was sampled
Environmental monitoring statutory (EU directives) (22 samples)
Monitoring (national agency policy) (12 samples)

Everything measured here

266 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 266 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 Pond / lake / reservoir water 4 Apr 2026 – Jul 2026 125.7% 10 Jul 2026
pH 0061 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 9.06 10 Jul 2026
Conductivity at 25 C 0077 Pond / lake / reservoir water 22 Oct 2023 – Jul 2026 235 µS/cm 10 Jul 2026
1,1,1,2-Tetrachloroethane 6534 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,1,1-Trichloroethane 3268 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,1,2,2-Tetrachloroethane 7531 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,1,2-Trichloroethane 9811 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,1-Dichloroethane 3269 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,1-Dichloroethylene :- {1,1-Dichloroethene} 9836 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,1-Dichloropropylene :- {1,1-Dichloropropene} 9684 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2,3-Trichlorobenzene 9050 Pond / lake / reservoir water 23 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
1,2,3-Trichloropropane 6541 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2,3-Trimethylbenzene 9457 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2,4-Trichlorobenzene 9051 Pond / lake / reservoir water 25 Dec 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2,4-Trimethylbenzene 9456 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2-Dibromo-3-chloropropane 6537 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2-Dibromoethane 9145 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2-Dichlorobenzene 9618 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2-Dichloroethane 3272 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2-Dichloropropane 6540 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,2-Dimethylbenzene :- {o-Xylene} 9845 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,3,5-Trichlorobenzene 9052 Pond / lake / reservoir water 23 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
1,3,5-Trimethylbenzene :- {Mesitylene} 9458 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,3-Dichlorobenzene 9619 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,3-Dichloropropane 6542 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
1,4-Dichlorobenzene 4049 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
2,2,3,4,4,5,6-Heptabromodiphenyl ether :- {PBDE 183} 9005 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00006 µg/l 10 Jul 2026
2,2,3,4,4,5-Hexabromodiphenyl ether :- {PBDE 138} 9007 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00009 µg/l 10 Jul 2026
2,2,3,4,4-Pentabromodiphenyl ether :- {PBDE 85} 9009 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00006 µg/l 10 Jul 2026
2,2,4,4,5,5-Hexabromodiphenyl ether :- {PBDE 153} 9011 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00006 µg/l 10 Jul 2026
2,2,4,4,5,6-Hexabromodiphenyl ether :- {PBDE 154} 9013 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00006 µg/l 10 Jul 2026
2,2,4,4,5-Pentabromodiphenyl ether :- {PBDE 99} 9015 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00006 µg/l 10 Jul 2026
2,2,4,4,6-Pentabromodiphenyl ether :- {PBDE 100} 9017 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00006 µg/l 10 Jul 2026
2,2,4,4-Tetrabromodiphenyl ether :- {PBDE 47} 9019 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00006 µg/l 10 Jul 2026
2,2-Dichloropropane 6744 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
2,3,4,4-Tetrabromodiphenyl ether :- {PBDE 66} 9021 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00007 µg/l 10 Jul 2026
2,3,6-TBA :- {2,3,6-Trichlorobenzoic acid} 7726 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,3-Dichlorophenol 9453 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,3-Dimethylphenol :- {2,3-Xylenol} 9451 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,4,4-TriBromoDiphenylEther 4621 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.00006 µg/l 10 Jul 2026
2,4,5-T :- {2,4,5-Trichlorophenoxyacetic acid} 3546 Pond / lake / reservoir water 11 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
2,4,5-Trichlorophenol 9818 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,4,6-Trichlorophenol 9819 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,4-D :- {2,4-Dichlorophenoxyacetic acid} 3545 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
2,4-DB :- {4-(2,4-dichlorophenoxy)butyric acid} 3791 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
2,4-Dichlorophenol 9816 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,4-Dimethylphenol :- {2,4-Xylenol} 3343 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,5-Dichlorophenol 9091 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,5-Dimethylphenol :- {2,5-Xylenol} 9094 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,6-Dichlorophenol 9817 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2,6-Dimethylphenol :- {2,6-Xylenol} 6569 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2-Chlorophenol 9814 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2-Chlorotoluene :- {1-Chloro-2-methylbenzene} 6547 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
2-Ethyl phenol 9454 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2-Methylphenol :- {o-Cresol} 5562 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
2-Phenoxypropionic acid :- {PPA} 6673 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
3,4-Dimethylphenol :- {3,4-Xylenol} 6577 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
3,5-Dimethylphenol :- {3,5-Xylenol} 5558 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 0.021 µg/l 10 Jul 2026
3-Chlorophenol 9703 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
3-Chlorotoluene :- {3-Chloromethylbenzene} 5568 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
3-Methylphenol :- {m-Cresol} 5561 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
4-Chloro-2-methylphenol :- {p-Chloro-o-cresol} 3341 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
4-Chloro-3,5-dimethylphenol :- {PCMX} 6584 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
4-Chloro-3-methylphenol :- {p-Chloro-m-cresol} 3342 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
4-Chlorophenol 9815 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
4-Chlorophenoxyacetic acid 3547 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
4-Chlorotoluene :- {1-Chloro-4-methylbenzene} 6578 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
4-Isopropyltoluene :- {4-methyl-Isopropylbenzene} 6579 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
4-Methylphenol :- {p-Cresol} 5560 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
4-Nonylphenol Branched 9190 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.04 µg/l 10 Jul 2026
4-Phenoxybutyric acid :- {PBA} 6672 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
4-tert-Octylphenol :- {p-tert-Octylphenol} 9267 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Acenaphthene 7395 Pond / lake / reservoir water 29 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Acenaphthylene 8311 Pond / lake / reservoir water 30 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Aclonifen 3478 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Alachlor 7086 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Aldicarb 9344 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Aldicarb sulfoxide 8806 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Aldoxycarb :- {Aldicarb Sulfone} 8807 Pond / lake / reservoir water 33 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Aldrin 0483 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Alkalinity to pH 4.5 as CaCO3 0162 Pond / lake / reservoir water 16 Oct 2023 – Mar 2026 50 mg/l 25 Mar 2026
Alkalinity, Dissolved as CaCO3 7867 Pond / lake / reservoir water 4 Apr 2026 – Jul 2026 60 mg/l 10 Jul 2026
Aluminium, Dissolved 6037 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 20 µg/l 10 Jul 2026
Aminomethylphosphonic acid 7125 Pond / lake / reservoir water 10 Apr 2024 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Ammoniacal Nitrogen, Filtered as N 9993 Pond / lake / reservoir water 22 Oct 2023 – Jul 2026 0.016 mg/l 10 Jul 2026
Anthracene 6753 Pond / lake / reservoir water 30 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Arsenic, Dissolved 6045 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 1 µg/l 10 Jul 2026
Asulam 3004 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
Atrazine 3002 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Azoxystrobin 5050 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
Barium, Dissolved 9446 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 11 µg/l 10 Jul 2026
Benazolin 3792 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Bentazone 4065 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.003 µg/l 10 Jul 2026
Benzene 3781 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Benzo(a)Anthracene 0772 Pond / lake / reservoir water 28 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Benzo(a)Pyrene 6399 Pond / lake / reservoir water 27 Oct 2023 – Jun 2026 0.0026 µg/l 15 Jun 2026
Benzo(b)Fluoranthene 0731 Pond / lake / reservoir water 28 Nov 2023 – Jul 2026 0.00065 µg/l 10 Jul 2026
Benzo(e)Pyrene 8940 Pond / lake / reservoir water 27 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Benzo(g,h,i)Perylene 0714 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 0.00069 µg/l 10 Jul 2026
Benzo(k)Fluoranthene 0733 Pond / lake / reservoir water 30 Oct 2023 – Jul 2026 0.00033 µg/l 10 Jul 2026
Benzyl butyl phthalate 8162 Pond / lake / reservoir water 10 Apr 2024 – Jul 2026 below 2 µg/l 10 Jul 2026
Bifenox 6603 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Boron, Dissolved 9447 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 100 µg/l 10 Jul 2026
Bromobenzene 6604 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Bromochloromethane 6605 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Bromodichloromethane 3282 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Bromoform :- {Tribromomethane} 3283 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Bromoxynil 6449 Pond / lake / reservoir water 10 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Cadmium, Dissolved 0106 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Calcium, Dissolved 0239 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 24 mg/l 10 Jul 2026
Carbaryl 9343 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Carbendazim 3475 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Carbetamide 9073 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Carbofuran 3086 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Carbon Disulphide 8847 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Carbon tetrachloride :- {Tetrachloromethane} 1049 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 Pond / lake / reservoir water 32 Oct 2023 – Jul 2026 5 mg/l 10 Jul 2026
Chlorfenvinphos 0503 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Chloridazon 6760 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Chlorobenzene 3290 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Chlorodibromomethane 3292 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Chloroform :- {Trichloromethane} 3373 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Chloromethane :- {Methyl Chloride} 6376 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Chlorophyll : Acetone Extract 7887 Pond / lake / reservoir water 17 Oct 2023 – Jul 2026 24 µg/l 10 Jul 2026
Chlorothalonil 6615 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0005 µg/l 10 Jul 2026
Chlorotoluron 9348 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Chloroxuron 3399 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Chlorpyrifos-ethyl 9978 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Chromium Hexavalent, Dissolved :- {Cr VI} 6619 Pond / lake / reservoir water 11 Oct 2023 – Jul 2026 0.057 µg/l 10 Jul 2026
Chromium, Dissolved 3409 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.5 µg/l 10 Jul 2026
Chrysene 8310 Pond / lake / reservoir water 29 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene} 6538 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
cis-1,3-Dichloropropylene :- {cis-1,3-Dichloropropene} 6543 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
cis-Heptachlor epoxide 8864 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.00004 µg/l 10 Jul 2026
cis-Permethrin 9341 Pond / lake / reservoir water 23 Oct 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Clopyralid 6620 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Copper : BLM Bioavailable 4821 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 0.16 µg/l 10 Jul 2026
Copper, Dissolved 6450 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 1.4 µg/l 10 Jul 2026
Cyanide : Free as CN 0174 Pond / lake / reservoir water 11 Oct 2023 – Jul 2026 below 0.005 mg/l 10 Jul 2026
Cypermethrin 0073 Pond / lake / reservoir water 21 Nov 2023 – Jul 2026 below 0.00001 µg/l 10 Jul 2026
Cypermethrin Identification 5446 Pond / lake / reservoir water 21 Nov 2023 – Jul 2026 1 text result 10 Jul 2026
DDE -pp 0551 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
DDT -op 0539 Pond / lake / reservoir water 22 Jan 2024 – Jun 2026 below 0.0001 µg/l 15 Jun 2026
DDT -pp 0555 Pond / lake / reservoir water 23 Jan 2024 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
DDT : Sum of components 0575 Pond / lake / reservoir water 22 Jan 2024 – Jun 2026 below 0.0004 µg/l 15 Jun 2026
Di(2-ethylhexyl) phthalate :- {DEHP} 6724 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.2 µg/l 10 Jul 2026
Diazinon 0723 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Dibenzo(a,h)Anthracene 8360 Pond / lake / reservoir water 30 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Dibromomethane 3783 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Dicamba 3550 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Dichlorobenzophenone 3472 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Dichloromethane :- {Methylene Dichloride} 3299 Pond / lake / reservoir water 25 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Dichlorprop :- {2,4-DP} 3551 Pond / lake / reservoir water 11 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Dichlorvos 0507 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.00004 µg/l 10 Jul 2026
Dieldrin 0511 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Diflurobenzuron 9345 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Dimethoate 6447 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Dimethylbenzene : Sum of isomers (1,3- 1,4-) 6716 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.2 µg/l 10 Jul 2026
Diuron 3811 Pond / lake / reservoir water 33 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Endosulfan : Total (A + B) 1109 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0002 µg/l 10 Jul 2026
Endosulfan A 0569 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Endosulfan B 0570 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Endrin 0562 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Ethiofencarb 6955 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Ethirimol 5047 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.05 µg/l 10 Jul 2026
Ethyl tert-butyl ether :- {ETBE} 9844 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Ethylbenzene 4117 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Fenitrothion 9716 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Fenoprop 3552 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Fenuron 9339 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Fluoranthene 0736 Pond / lake / reservoir water 29 Oct 2023 – Jul 2026 0.0019 µg/l 10 Jul 2026
Fluorene 7864 Pond / lake / reservoir water 29 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Fluroxypyr 4064 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 Pond / lake / reservoir water 10 Oct 2025 – Jul 2026 1 text result 10 Jul 2026
Glyphosate 3007 Pond / lake / reservoir water 10 Apr 2024 – Jul 2026 below 0.1 µg/l 10 Jul 2026
HCH -alpha 0487 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
HCH -beta 0491 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
HCH -delta 0495 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
HCH -gamma :- {Lindane} 0499 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 0.0001 µg/l 10 Jul 2026
Heptachlor 0527 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.00004 µg/l 10 Jul 2026
Hexabromocyclododecane Total: (Sum of a, b, g) 9248 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.0002 µg/l 10 Jul 2026
Hexachlorobenzene 0576 Pond / lake / reservoir water 23 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Hexachlorobutadiene 6648 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Hexachloroethane 5234 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Imazapyr 7025 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Indeno(1,2,3-cd)pyrene 0746 Pond / lake / reservoir water 28 Nov 2023 – Jul 2026 0.00075 µg/l 10 Jul 2026
Ioxynil 9068 Pond / lake / reservoir water 11 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Irgarol 1051 8999 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Iron, Dissolved 6460 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 30 µg/l 10 Jul 2026
Isodrin 9494 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Isopropylbenzene :- {Methylethylbenzene} 7574 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Isoproturon 3117 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Lead : BLM Bioavailable 3377 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 0.01 µg/l 10 Jul 2026
Lead, Dissolved 0052 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Linuron 3118 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Lithium, Dissolved 4201 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 100 µg/l 10 Jul 2026
Magnesium, Dissolved 0235 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 3.2 mg/l 10 Jul 2026
Malathion 0535 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Manganese : BLM Bioavailable 4820 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 5 µg/l 10 Jul 2026
Manganese, Dissolved 6458 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 10 µg/l 10 Jul 2026
MCPA :- {4-Chloro-2-methylphenoxyacetic acid} 3548 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
MCPB :- {4-Chloro-2-methylphenoxybutyric acid} 3790 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Mecoprop 3549 Pond / lake / reservoir water 11 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Mercury, Dissolved 0103 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Methabenzthiazuron 7053 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Methiocarb 6971 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.001 µg/l 10 Jul 2026
Methomyl 6972 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Metoxuron 3130 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Metsulfuron-methyl 9861 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Monolinuron 3925 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Monuron 3400 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
MTBE :- {Methyl tert-butyl ether} 6656 Pond / lake / reservoir water 26 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
n-ButylBenzene :- {1-Phenylbutane} 6658 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
n-Propylbenzene :- {1-Phenylpropane} 6659 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Naphthalene 9669 Pond / lake / reservoir water 27 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Neburon 9756 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Nickel : BLM Bioavailable 3878 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 1.1 µg/l 10 Jul 2026
Nickel, Dissolved 3410 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 1.1 µg/l 10 Jul 2026
Nitrite, Filtered as N 6485 Pond / lake / reservoir water 4 Apr 2026 – Jul 2026 0.023 mg/l 10 Jul 2026
Nitrogen, Total as N 9686 Pond / lake / reservoir water 20 Oct 2023 – Jul 2026 0.66 mg/l 10 Jul 2026
Nitrogen, Total Oxidised, Filtered as N 9943 Pond / lake / reservoir water 18 Oct 2023 – Mar 2026 1.1 mg/l 25 Mar 2026
Orthophosphate, Filtered as P 9856 Pond / lake / reservoir water 22 Oct 2023 – Jul 2026 0.0011 mg/l 10 Jul 2026
Oxamyl 6980 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Pendimethalin 9892 Pond / lake / reservoir water 23 Dec 2023 – Jul 2026 below 0.0005 µg/l 10 Jul 2026
Pentachlorobenzene 5863 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Pentachlorophenol 1085 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.02 µg/l 10 Jul 2026
Perfluorooctanoate anion 9274 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 0.0011 µg/l 10 Jul 2026
Perfluorooctylsulphonate anion 9276 Pond / lake / reservoir water 32 Oct 2023 – Jul 2026 0.001 µg/l 10 Jul 2026
Perylene 9003 Pond / lake / reservoir water 30 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Phenanthrene 9671 Pond / lake / reservoir water 28 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Phenol 9522 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 0.054 µg/l 10 Jul 2026
Phenoxyacetic acid :- {PAA} 6671 Pond / lake / reservoir water 11 Jan 2024 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Phosphorus, Total as P 0348 Pond / lake / reservoir water 20 Oct 2023 – Jul 2026 0.025 mg/l 10 Jul 2026
Picloram 9883 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Potassium, Dissolved 0209 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 3.2 mg/l 10 Jul 2026
Propoxur 6987 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Pyrene 7325 Pond / lake / reservoir water 29 Nov 2023 – Jun 2026 below 0.01 µg/l 15 Jun 2026
Quinoxyfen 5157 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
sec-Butylbenzene :- {1-Methylpropylbenzene} 6690 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Selenium, Dissolved 6047 Pond / lake / reservoir water 12 Oct 2023 – Jul 2026 below 1 µg/l 10 Jul 2026
Simazine 3001 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 0.00032 µg/l 10 Jul 2026
Sodium, Dissolved 0205 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 13 mg/l 10 Jul 2026
Strontium, Filtered 6693 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 90 µg/l 10 Jul 2026
Styrene :- {Vinylbenzene} 9888 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Sulcotrione 5042 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Sulphate, Dissolved as SO4 7859 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 20 mg/l 10 Jul 2026
TDE -pp 0559 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Terbutryn 3009 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 0.00046 µg/l 10 Jul 2026
tert-Amyl methyl ether :- {TAME} 9839 Pond / lake / reservoir water 26 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
tert-Butylbenzene :- {(1,1-Dimethylethyl)benzene} 6697 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Tetrachloroethylene :- {Perchloroethylene} 3328 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Toluene :- {Methylbenzene} 3784 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene} 6539 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
trans-1,3-Dichloropropylene :- {trans-1,3-Dichloropropene} 6544 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
trans-Heptachlor epoxide 8865 Pond / lake / reservoir water 23 Dec 2023 – Jul 2026 below 0.00004 µg/l 10 Jul 2026
trans-Permethrin 9342 Pond / lake / reservoir water 20 Oct 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Tributyl Tin as Cation 8944 Pond / lake / reservoir water 30 Oct 2023 – Jul 2026 0.00003 µg/l 10 Jul 2026
Trichloroethylene :- {Trichloroethene} 3334 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Trichlorofluoromethane 6711 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Triclopyr 3555 Pond / lake / reservoir water 11 Oct 2023 – Jul 2026 below 0.005 µg/l 10 Jul 2026
Triclosan 5889 Pond / lake / reservoir water 28 Apr 2024 – Jul 2026 below 0.01 µg/l 10 Jul 2026
Trifluralin 9989 Pond / lake / reservoir water 24 Dec 2023 – Jul 2026 below 0.0001 µg/l 10 Jul 2026
Triphenyl Tin as Cation 5732 Pond / lake / reservoir water 31 Oct 2023 – Jul 2026 below 0.00002 µg/l 10 Jul 2026
Vinyl chloride :- {Chloroethylene} 6715 Pond / lake / reservoir water 27 Oct 2023 – Jul 2026 below 0.1 µg/l 10 Jul 2026
Zinc : BLM Bioavailable 4822 Pond / lake / reservoir water 28 Oct 2023 – Jul 2026 0.1 µg/l 10 Jul 2026
Zinc, Dissolved 3408 Pond / lake / reservoir water 34 Oct 2023 – Jul 2026 below 0.5 µg/l 10 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.