Rule 1 Discharges of water and minor contaminants

The discharge of contaminants, or water, into surface water, [other than the discharge of stormwater], is a permitted activity provided the discharge complies with the conditions specified below.

Conditions

(1) the discharge is not to any wetland, lake or river being managed in its natural state [see Appendix 2, part A, on the sidebar at the top right of this screen]; and

(2) the discharge shall not contain any contaminants other than [contaminants in concentrations specifiedin] conditions (3) to (7) below; and

(3) concentrations of free or combined residual chlorine in the discharge shall be no more than 0.5 g/m3; and

(4) concentrations of suspended solids in the discharge shall be no more than 50 g/m; and

(5) concentrations of acid-soluble aluminium in the discharge shall be no more than 0.15g/m; and

(6) concentrations of fluoride in the discharge shall be no more than 1.5 g/m3; and

(7) the discharge temperature shall not differ from the ambient temperature of the receiving water by more than 5 Celsius; and

(8) the discharge does not cause erosion at the point of discharge; and

(9) the discharge does not alter the natural course of the river or stream.

In Rule 1, the words in square brackets were inserted by Decisions on Plan Change 1 to the Regional Freshwater Plan 2002