| Water
Use |
Parameter |
Criterion |
| Raw
drinking water without treatment for colour removal. |
True
Colour |
15
mg/L Pt |
| Aquatic
life, freshwater, estuarine and marine; Wildlife |
Apparent
Colour |
30-day
mean transmission of white light shall be less than or
equal to 80% of background levels as measured historically
or at appropriate reference sites |
| |
True
Colour |
30-day
mean true colour of filtered water samples shall not exceed
background levels by >5 mg/L Pt in clearwater systems
(background levels less than 20 mg/L Pt) or 20% in coloured
systems (background levels >20 mg/L Pt) |
| Livestock
watering; Irrigation; and Industrial Water Supplies |
True
and Apparent Colour |
Insufficient
information to derive criteria |
| Recreation
and aesthetics, freshwater, estuarine and marine. |
Apparent Colour |
Secchi disk sighting range less than 1.5 m/ |
| |
True
Colour |
15
mg/L Pt |
