Section Sch3-6 — Resource Management Act 1991: Class WS Water (being water managed for water supply purposes)

6 Class WS Water (being water managed for water supply purposes) (1) The pH of surface waters shall be within the range 6.0-9.0 units. (2) The concentration of dissolved oxygen in surface waters shall exceed 5 grams per cubic metre. (3) The water shall not be rendered unsuitable for treatment (equivalent to coagulation, filtration, and disinfection) for human consumption by the presence of contaminants. (4) The water shall not be tainted or contaminated so as to make it unpalatable or unsuitable for consumption by humans after treatment (equivalent to coagulation, filtration, and disinfection), or unsuitable for irrigation. (5) There shall be no undesirable biological growths as a result of any discharge of a contaminant into the water.