Sch 4Ambient environmental

Schedule 4 Ambient environmental standards (see s 43) Part 4.1 Domestic water supply—fully treated (TAP) Table 4.1.1 Group A—microbiological quality item 1 E. coli 0 cfu per 100 mL for 98% of samples Table 4.1.2 Group B—physical quality item 1 acidity (pH) 6.5-8.5 2 colour (HU) 15 3 dissolved oxygen >85% 4 hardness 200 mg/L 5 taste and odour acceptable to most people 6 total dissolved solids 500 mg/L 7 turbidity (NTU) 5

Table 4.1.3 Group C—inorganic chemicals item 1 aluminium (acid soluble) 0.2 2 ammonia (as NH4) 0.5 3 antimony 0.003 4 arsenic 0.007 5 barium 0.7 6 boron 0.3 7 cadmium 0.002 8 chloride 250 9 chromium (as Cr(6)) 0.05 10 copper 1 11 cyanide 0.07 12 fluoride 1.5 13 hydrogen sulfide 0.05 14 iodide 0.1 15 iron 0.3 16 lead 0.01 17 manganese 0.1 18 mercury 0.001 19 molybdenum 0.05 20 nickel 0.02 21 nitrate (as nitrate) 50 22 nitrite (as nitrite) 3 23 selenium 0.01 24 silver 0.02

item 25 sodium 180 26 sulfate 250 27 zinc 3 Table 4.1.4 Group D—organic compounds item 1 acrylamide 0.0002 2 benzene 0.001 3 carbon tetrachloride 0.003 4 chlorobenzene 0.01 5 dichlorobenzenes— 5.1 1,2-dichlorobenzene 0.001 5.2 1,3-dichlorobenzene 0.02 5.3 1,4-dichlorobenzene 0.0003 6 dichloroethanes— 6.1 1,2-dichloroethane 0.003 7 dichloroethenes— 7.1 1,1-dichloroethene 0.03 7.2 1,2-dichloroethene 0.06 8 dichloromethane (methylene chloride) 0.02 9 ethylbenzene 0.003 10 ethylenediamine tetracetic acid (EDTA) 0.25 11 hexachlorobutadiene 0.0007

item 12 nitrilotriacetic acid 0.2 13 organotins— 13.1 tributyltin oxide 0.001 14 plasticisers— 14.1 di (2-ethylhexyl) phthalate 0.01 14.2 polycyclic aromatic hydrocarbons (PAHs) 0.00001 14.3 styrene (vinylbenzene) 0.004 14.4 tetrachloroethene 0.05 14.5 toluene 0.025 14.6 trichlorobenzenes (total) 0.005 14.7 vinyl chloride 0.0003 14.8 xylene 0.02 Table 4.1.5 Group E—disinfection by-products item 1 chloramine (see mono- chloramine) 2 chlorine (free) 0.6 3 chlorine dioxide 0.4 4 chlorite 0.3 5 chloroacetic acids— 5.1 chloroacetic acid 1 5.2 dichloroacetic acid 0.05 5.3 trichloroacetic acid 0.1

item 6 chlorophenols— 6.1 2-chlorophenol 0.0001 6.2 2,4-dichlorophenol 0.0003 6.3 2,4,6-dichlorophenol 0.002 7 cyanogen chloride (as cyanide) 0.07 8 formaldehyde 0.5 9 mono-chloramine 0.5 10 trichloroacetaldehyde (chloral hydrate) 0.02 11 trihalomethanes (THMs) (total) 0.25 Table 4.1.6 Group F—pesticides item 1 acephate 0.01 2 aldicarb 0.001 3 aldrin 0.0003 4 ametryn 0.05 5 amitrole 0.01 6 asulam 0.05 7 atrazine 0.02 8 azinphos-methyl 0.003 9 benomyl 0.1 10 bentazone 0.03

item 11 bioresmethrin 0.1 12 bromacil 0.3 13 bromophos-ethyl 0.01 14 bromoxynil 0.03 15 carbaryl 0.03 16 carbendazim 0.1 17 carbofuran 0.01 18 carbophenthion 0.0005 19 carboxin 0.3 20 chlordane 0.001 21 chlorothalonil 0.03 22 chloroxuron 0.01 23 chlorphenvinphos 0.005 24 chlorpyrifos 0.01 25 chlorsulfuron 0.1 26 cichlorvos 0.001 27 clopyralid 1 28 2,4-D 0.03 29 DDT 0.02 30 diazinon 0.003 31 dicamba 0.1 32 dichlobenil 0.01 33 diclofop-methyl 0.005 34 dicofol 0.003 35 dieldrin 0.0003