Schedule 1

FIRST SCHEDULERegulations 2 and 4Quality requirements of drinking waterPart 1MICROBIAL PARAMETERSFirst columnSecond column1.Escherichia coli (or alternatively, thermotolerant coliform bacteria)Must not be detectable in any 100‑millilitre samplePart 2PHYSICO-CHEMICAL PARAMETERSFirst columnSecond column1.ColourMust not exceed 15 True Colour Units2.TurbidityMust not exceed 5 Nephelometric Turbidity Units3.pH6.5-9.5 (if the water is provided by a WQMP water provider using a distribution network main connected to the service pipes or storage tanks in any area or to any premises)Part 3RADIOLOGICAL PARAMETERSFirst columnSecond column1.Gross Alpha activityMust not exceed 0.5 becquerel/litre2.Gross Beta activityMust not exceed 1 becquerel/litre3.Radon 222 concentrationMust not exceed 100 becquerel/litrePart 4CHEMICAL PARAMETERSFirst columnSecond columnChemicalMaximum prescribed quantity (milligrams/litre)1.Acrylamide0.00052.Alachlor0.023.Aldicarb Sulfoxide and Aldicarb Sulfone0.014.Combined Aldrin and Dieldrin0.000035.Antimony0.026.Arsenic0.017.Atrazine and its chloro‑s‑triazine metabolites0.18.Barium1.39.Bentazone0.510.Benzene0.0111.Benzo[a]pyrene0.000712.Boron2.413.Bromate0.0114.Bromodichloromethane0.0615.Bromoform0.116.Cadmium0.00317.Carbofuran0.00718.Carbon tetrachloride0.00419.Chlorate0.720.Chlordane0.000221.Chlorine522.Chlorite0.723.Chloroform0.324.Chlorotoluron0.0325.Chlorpyrifos0.0326.Chromium, in all forms as a total0.0527.Copper228.Cyanazine0.000629.Cyanide0.0730.Cyanide in Cyanogen Chloride form as part of total cyanogenic compounds0.0731.Cyanuric acid4032.2,4-D (2,4-dichlorophenoxyacetic acid) in free acid form0.0333.2,4-DB [4-(2,4-Dichlorophenoxy) butyric acid]0.0934.DDT (dichlorodiphenyltrichloroethane) and metabolites0.00135.Di(2-ethylhexyl)phthalate0.00836.Dibromoacetonitrile0.0737.Dibromochloromethane0.138.1,2-Dibromo-3-chloropropane0.00139.1,2-Dibromoethane (Dibromoethane, 1,2-)0.000440.Dichloroacetate0.0541.Dichloroacetonitrile0.0242.1,2-Dichlorobenzene (Dichlorobenzene, 1,2-)143.1,4-Dichlorobenzene (Dichlorobenzene, 1,4-)0.344.1,2-Dichloroethane (Dichloroethane, 1,2-)0.0345.1,2 Dichloroethene (Dichloroethene, 1,2)0.0546.Dichloromethane0.0247.1,2-Dichloropropane (Dichloropropane, 1,2-; 1,2-DCP)0.0448.1,3-Dichloropropene (Dichloropropene 1,3-)0.0249.Dichlorprop0.150.Dichlorvos0.0251.Dicofol0.0152.Dimethoate0.00653.Dioxane, 1,4-(1,4-Dioxane)0.0554.Diquat0.0355.Edetic acid (EDTA‑Ethylene Diamine Tetraacetic Acid) in free acid form0.656.Endrin0.000657.Epichlorohydrin0.000458.Ethylbenzene0.359.Fenoprop (2,4,5-TP; 2,4,5‑trichlorophenoxy propionic acid)0.00960.Fluoride0.761.Glyphosate and aminomethylphosphonic acid (AMPA)0.962.Hexachlorobutadiene (HCBD)0.000663.Hydroxyatrazine0.264.Isoproturon0.00965.Lead0.0166.Lindane0.00267.Malathion0.968.Manganese0.469.MCPA[(4-Chloro-2-methylphenoxy)acetic acid; 4-(2-methyl-4-chlorophenoxy)acetic acid]0.770.Mecoprop {MCPP; [2(2-methyl-chlorophenoxy) propionic acid]}0.0171.Mercury, in inorganic form0.00672.Methoxychlor0.0273.Metolachlor0.0174.Microcystin-LR, in free and cellbound forms as a total0.00175.Molinate0.00676.Molybdenum0.0777.Monochloramine378.Monochloroacetate0.0279.N-Nitrosodimethylamine (NDMA)0.000180.Nickel0.0781.Nitrate (as NO3ˉ)5082.Nitrate plus nitrite combinedThe sum of the ratios of the concentrations of each to their maximum prescribed quantity must not exceed 183.Nitrilotriacetic acid (NTA)0.284.Nitrite (as NO2ˉ)385.Pendimethalin0.0286.Pentachlorophenol (PCP)0.00987.Perchlorate0.0788.Permethrin, where used as a larvicide for public health purposes0.389.Pyriproxyfen0.390.Selenium0.0491.Simazine0.00292.Sodium dichloroisocyanurate5093.Sodium dichloroisocyanurate as cyanuric acid4094.Styrene0.0295.2,4,5-T (2,4,5-Trichlorophenoxyacetic acid)0.00996.Terbuthylazine (TBA)0.00797.Tetrachloroethene0.0498.Toluene0.799.Trichloroacetate0.2100.Trichloroethene0.02101.Trichlorophenol, 2,4,6-(2,4,6- Trichlorophenol)0.2102.Trifluralin0.02103.TrihalomethanesThe sum of the ratio of the concentration of each Trihalomethane1 to its respective maximum prescribed quantity must not exceed 11 Refers to bromoform, bromodichloromethane, dibromochloromethane and chloroform104.Uranium (only chemical aspects of uranium addressed)0.03105.Vinyl chloride0.0003106.Xylenes0.5