Water Quality

Canberra's water quality

The quality of water from the catchment to consumers is evaluated through physical, chemical, and microbiological analysis of water samples from the dams, treatment plants, service reservoirs, and garden taps of Canberra residents.

All sampling and analytical work is performed by a NATA (National Association of Testing Authorities) registered laboratory. The ACT drinking water quality code of practice and the Australian drinking water guidelines (ADWG) are the basis for ACTEW Water's water quality operations and monitoring.

ACTEW Water publishes an Annual Drinking Water Quality Report which is a valuable resource for information on the Canberra drinking water supply system and for recent data on the physical and chemical composition of Canberra's drinking water.

Typical physical and chemical composition of Canberra drinking water

Parameter

Typical value

ADWG (health)

Note: These values are based on water quality data reported in 2011-12.

pH

7.7

6.5-8.5*

Alkalinity

36.0 mg/L as CaCO3

-

Colour (true)

<1 Pt-Co

15*

Turbidity

0.34 NTU

5*

Fluoride

0.82 mg/L

1.5

Hardness

44.4 mg/L

200*

Iron

< 0.02 mg/L

0.3*

Manganese

0.004 mg/L

0.5

Aluminium (acid soluble)

43.12 mg/L

200*

Copper

0.02 mg/L

2

Lead

0.0004 mg/L

0.01