Barwon Water has been given top marks for its water quality.
The corporation has achieved 100 per cent compliance with a range of quality standards under the Safe Drinking Water Act 2003.
The Act and associated Australian Safe Drinking Water Guidelines 2004 are used annually as benchmarks for safe drinking water.
Barwon Water Managing Director Michael Malouf said the results highlighted the corporation's commitment to high quality drinking water.
"The delivery of safe drinking water and protection of catchments are Barwon Water's highest priorities. These results reflect the success of our rigorous monitoring programs, which include weekly, monthly and quarterly sampling," Mr Malouf said.
The results are detailed in the Annual Drinking Water Quality Report for 2010/11 that can be downloaded from our website.
The report also reveals a reduction in the number of water quality complaints on the previous year.
In 2010/11, Barwon Water received 2.0 complaints per 1000 customers, down from 2.3 in 2009/10. This was also well below the five-year average of 3.3 complaints per 1000 properties.
Mr Malouf said there was a reduction in complaints in all categories aside from taste and odour, which experienced a slight increase on 2009/10.
This increase could be attributed to an outbreak of naturally occurring algae at Lovely Banks storage basin in December, 2010.
"Lining and covering of the Lovely Banks basins has commenced and will eradicate the potential for any similar water quality events occurring in the future," Mr Malouf said.
He said lining and covering of basins in Barwon Water's service area was among a number of water quality improvement projects outlined in the report.