Drinking Water Quality Standard

Parameter Group RECOMMENDED RAW WATER QUALITY DRINKING WATER QUALITY STANDARDS Acceptable Value (mg/litre (unless otherwise stated)) Maximum Acceptable Value (mg/litre (unless otherwise stated)) Total Coliform 1 5000 MPN / 100 ml 0 in 100 ml E.coli 1 5000 MPN / 100 m 0 in 100 m Turbidity 1 1000 NTU 5 NTU Color 1 300 TCU 15 TCU pH 1 5.5 - 9.0 6.5 - 9.0 Free Residual Chlorine 1 - 0.2 - 5.0 Combined...

Parameter	Group	RECOMMENDED RAW WATER QUALITY	DRINKING WATER QUALITY STANDARDS
		Acceptable Value (mg/litre (unless otherwise stated))	Maximum Acceptable Value (mg/litre (unless otherwise stated))
Total Coliform	1	5000 MPN / 100 ml	0 in 100 ml
E.coli	1	5000 MPN / 100 m	0 in 100 m
Turbidity	1	1000 NTU	5 NTU
Color	1	300 TCU	15 TCU
pH	1	5.5 – 9.0	6.5 – 9.0
Free Residual Chlorine	1	–	0.2 – 5.0
Combined Chlorine	1	–	Not Less Than 1.0
Temperature	1	–	–
Clostridium perfringens (including spores)	1	–	Absent
Coliform bacteria	1	–	–
Colony count 22°	1	–	–
Conductivity	1	–	–
Enterococci	1	–	–
Odour	1	–	–
Taste	1	–	–
Oxidisability	1	–	–
Total Dissolved Solids	2	1500	1000
Chloride	2	250	250
Ammonia	2	1.5	1.5
Nitrat	2	10	10
Ferum/Iron	2	1.0	0.3
Fluoride	2	1.5	0.4 – 0.6
Hardness	2	500	500
Aluminium	2	–	0.2
Manganese	2	0.2	0.1
Chemical Oxygen Demand	2	10	–
Anionic Detergent MBAS	2	1.0	1.0
Biological Oxygen Demand	2	6	–
Nitrite	2	–	–
Total organic carbon (TOC)	2	–	–
Mercury	3	0.001	0.001
Cadmium	3	0.003	0.003
Arsenic	3	0.01	0.01
Cyanide	3	0.07	0.07
Plumbum/Lead	3	0.05	0.01
Chromium	3	0.05	0.05
Cuprum/Copper	3	1.0	1.0
Zinc	3	3	3
Natrium/Sodium	3	200	200
Sulphate	3	250	250
Selenium	3	0.01	0.01
Argentum	3	0.05	0.05
Magnesium	3	150	150
Mineral Oil	3	0.3	0.3
Chloroform	3	–	0.2
Bromoform	3	–	0.1
Dibromoklorometana	3	–	0.1
Bromodiklorometana	3	–	0.06
Fenol/Phenol	3	0.002	0.002
Antimony	3	–	0.005
Nickel	3	–	0.02
Dibromoacetonitrile	3	–	0.1
Dichloroacetic acid	3	–	0.05
Dichloroacetonitrile	3	–	0.09
Trichloroacetic acid	3	–	0.1
Trichloroacetonitrile	3	–	0.001
Trihalomethanes – Total	3	–	1.00
Aldrin / Dealdrin	4	0.00003	0.00003
DDT	4	0.002	0.002
Heptachlor & Heptachlor Epoxide	4	0.00003	0.00003
Methoxychlor	4	0.02	0.02
Lindane	4	0.002	0.002
Chlordane	4	0.0002	0.0002
Endosulfan	4	0.03	0.03
Hexachlorobenzena	4	0.001	0.001
1,2-dichloroethane	4	–	0.03
2,4,5-T	4	–	0.009
2,4,6-trichlorophenol	4	–	0.2
2,4-D	4	0.03	0.03
2,4-DB	4	–	0.09
2,4-dichlorophenol	4	–	0.09
Acrylamide	4	–	0.0005
Alachlor	4	–	0.02
Aldicarb	4	–	0.01
Benzene	4	–	0.01
Carbofuran	4	–	0.007
MCPA	4	–	0.002
Pendimethalin	4	–	0.02
Pentachlorophenol	4	–	0.009
Permethrin	4	–	0.02
Pesticides	4	–	–
Pesticides – Total	4	–	–
Polycyclic aromatic hydrocarbons	4	–	–
Propanil	4	–	0.02
Tetrachloroethene and Trichloroethene	4	–	–
Vinyl chloride	4	–	0.005
Gross alpha (α)	5	0.1Bq/l	0.1Bq/l
Gross beta (β)	5	1.0 Bq/l	1.0 Bq/l
Tritium	5	–	–
Total indicative dose	5	–	–