Alkalinity to pH 4.5 as CaCO3 (MILLIGRAM PER LITRE) over time Alkalinity to pH 4.5 as CaCO3 (8) Ammoniacal Nitrogen as N (8) Chloride (8) Conductivity at 25 C (8) Nitrite as N (8) Orthophosphate, reactive as P (8) Oxygen, Dissolved as O2 (8) Oxygen, Dissolved, % Saturation (8) pH (8) Temperature of Water (8) Nitrate as N (7) Nitrogen, Total Oxidised as N (7) Aluminium, Dissolved (5) Barium, Dissolved (5) Bicarbonate as HCO3 (5) Boron, Dissolved (5) Cadmium, Dissolved (5) Calcium, Dissolved (5) Chromium, Dissolved (5) Copper, Dissolved (5) Fluoride (5) Hardness, Total as CaCO3 (5) Ionic Balance: Dissolved (5) Iron, Dissolved (5) Lead, Dissolved (5) Lithium, Dissolved (5) Magnesium, Dissolved (5) Manganese, Dissolved (5) Nickel, Dissolved (5) Potassium, Dissolved (5) Silica, reactive as SiO2 (5) Sodium, Dissolved (5) Strontium, Filtered (5) Sulphate, Dissolved as SO4 (5) Zinc, Dissolved (5) Carbon, Organic, Dissolved as C :- {DOC} (4) Copper : BLM Bioavailable (4) Lead : BLM Bioavailable (4) Manganese : BLM Bioavailable (4) Nickel : BLM Bioavailable (4) Zinc : BLM Bioavailable (4) Aluminium (2) Arsenic, Dissolved (2) Barium (2) Boron (2) Bromate (2) Bromide (2) Cadmium (2) Calcium (2) Chromium (2) Copper (2) Cyanide as CN (2) Iodide (2) Ionic Balance (2) Iron (2) Lead (2) Lithium (2) Magnesium (2) Manganese (2) Mercury, Dissolved (2) Nickel (2) pH : In Situ (2) Potassium (2) Selenium, Dissolved (2) Sodium (2) Strontium (2) Sulphate as SO4 (2) Zinc (2) 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) (1) 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) (1) 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) (1) 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) (1) 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) (1) 2-Phenoxypropionic acid :- {PPA} (1) 2,3,6-TBA :- {2,3,6-Trichlorobenzoic acid} (1) 2,4-D :- {2,4-Dichlorophenoxyacetic acid} (1) 2,4-DB :- {4-(2,4-dichlorophenoxy)butyric acid} (1) 2,4,5-T :- {2,4,5-Trichlorophenoxyacetic acid} (1) 2H,2H,3H,3H-Perfluorooctanoic acid (1) 3-Perfluoroheptylpropanoic acid (1) 3:3 Fluorotelomer carboxylic acid (1) 4-Chloro-2-methylphenol :- {p-Chloro-o-cresol} (1) 4-Chlorophenoxyacetic acid (1) 4-Phenoxybutyric acid :- {PBA} (1) 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) (1) 4:2 Fluorotelomer sulfonic acid (1) 6:2 Fluorotelomer sulfonic acid (1) 8:2 Fluorotelomer sulfonic acid (1) 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (1) Aldicarb (1) Aldicarb sulfoxide (1) Aldoxycarb :- {Aldicarb Sulfone} (1) Asulam (1) Atrazine (1) Atrazine-desethyl :- {Atrazine-de-ethyl} (1) Atrazine-desisopropyl :- {Atrazine de-isopropyl} (1) Azinphos-ethyl (1) Azinphos-methyl (1) Azoxystrobin (1) Benazolin (1) Bendiocarb (1) Bentazone (1) Bromoxynil (1) Bupirimate (1) Carbaryl (1) Carbendazim (1) Carbetamide (1) Carbofuran (1) Carbophenothion (1) Chlorfenvinphos (1) Chloridazon (1) Chlorotoluron (1) Chloroxuron (1) Chlorpyrifos-ethyl (1) Chlorpyrifos-methyl (1) Clopyralid (1) Coumaphos (1) Cyanazine (1) Desmetryn (1) Diazinon (1) Dicamba (1) Dichlorprop :- {2,4-DP} (1) Dichlorvos (1) Diflurobenzuron (1) Dimethoate (1) Diuron (1) Ethiofencarb (1) Ethion (1) Ethirimol (1) Ethofumesate (1) Fenchlorphos :- {Ronnel} (1) Fenitrothion (1) Fenoprop (1) Fenpropimorph (1) Fenthion (1) Fenuron (1) Fluroxypyr (1) Fonofos (1) GCMS Screen : Target Based multi-residue screening : Semi Quantitative (1) Hexafluoropropylene oxide dimer acid (Gen X) (1) Imazapyr (1) Iodofenphos (1) Ioxynil (1) Iprodione (1) Irgarol 1051 (1) Isoproturon (1) LCMS Screen : Semi Quantitative (1) Linuron (1) Malathion (1) MCPA :- {4-Chloro-2-methylphenoxyacetic acid} (1) MCPB :- {4-Chloro-2-methylphenoxybutyric acid} (1) Mecoprop (1) Metalaxyl (1) Metazachlor (1) Methabenzthiazuron (1) Methiocarb (1) Methomyl (1) Metoxuron (1) Metsulfuron-methyl (1) Mevinphos (1) Monolinuron (1) Monuron (1) N-Ethylperfluorooctanesulfonamide (1) N-methylperfluorooctanesulfonamide (1) Napropamide (1) Neburon (1) Oxamyl (1) Parathion-ethyl :- {Parathion} (1) Parathion-methyl (1) Perfluoro-3-methoxypropanoic acid (1) Perfluoro-3,6-dioxaheptanoic acid (1) Perfluoro-4-ethylcyclohexanesulfonic acid (1) Perfluoro(2-ethoxyethane)sulfonic acid (1) Perfluoro(4-methoxybutanoic) acid (1) Perfluorobutanesulfonic acid (1) Perfluorobutanoic acid (1) Perfluorobutylsulfonamide (perfluorobutane sulfonamide) (1) Perfluorodecanesulfonic acid (1) Perfluorodecanoic acid (1) Perfluorododecane sulfonic acid (1) Perfluorododecanoic acid (1) Perfluoroheptanesulfonic acid (1) Perfluoroheptanoic acid (1) Perfluorohexanesulfonamide (1) Perfluorohexanesulfonic acid (B) (1) Perfluorohexanesulfonic acid (L) (1) Perfluorohexanoic acid (1) Perfluorononanesulfonic acid (1) Perfluorononanoic acid (1) Perfluorooctadecanoic acid (1) Perfluorooctanesulfonamide (1) Perfluorooctanesulfonic acid (branched) (1) Perfluorooctanesulfonic acid (linear) (1) Perfluorooctanoic acid (1) Perfluoropentanesulfonic acid (1) Perfluoropentanoic acid (1) Perfluorotetradecanoic acid (1) Perfluorotridecanoic acid (1) Perfluoroundecane sulfonic acid (1) Perfluoroundecanoic acid (1) Phenoxyacetic acid :- {PAA} (1) Picloram (1) Pirimicarb (1) Pirimiphos-ethyl (1) Pirimiphos-methyl (1) Prometryn (1) Propazine (1) Propetamphos (1) Propoxur (1) Propyzamide (1) Simazine (1) Sulcotrione (1) Terbutryn (1) Triazophos (1) Triclopyr (1) Trietazine (1) Source: Environment Agency Water Quality Archive (per-sample observations), Open Government Licence. Regulator monitoring — complements Friends of the Dart’s citizen sampling.