The Central West Regional Algal Co-ordinating Committee, which is part of the NSW Government’s WaterNSW, says the red alert high level algal warning at the dam is now a medium level amber alert.

“Monitoring conducted by WaterNSW has shown that concentrations of blue-green algae have declined to medium levels, prompting the lifting of the red alert,” a spokesperson said.

“While on an amber alert, the water is generally considered to be suitable for water sports, however, people are advised to exercise caution.”

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The spokesperson said people are still advised not to drink untreated or boiled water from the storage due to the risk of stomach upsets.

“Boiling the water does not inactivate algae toxins,” the spokesperson said.

“Water users should use personal discretion at all times before entering the water body and be aware that the algal situation can change quickly.”

The spokesperson said the dam’s water “should be considered unsuitable for potable use and alternative supplies or prior treatment of raw water for domestic purposes should be considered”.

“The water may be unsuitable for stock watering,” the spokesperson said.

People who believe they may have been affected by blue-green algae are advised to seek medical advice.

Updates about blue-green algae blooms and red level warning areas can be obtained by calling 1800 999 457 or visiting www.waternsw.com.au/water-quality/algae

Meanwhile, Chifley Dam was at 55.1 per cent of capacity as of Tuesday, according to Bathurst Regional Council, and the inflow to the storage was “occurring at a very slow rate”.

The release of water from the dam was averaging 4.5 megalitres a day and consumption of filtered water in Bathurst was averaging 12.6 megalitres a day.

There is about 32 per cent less water in storage at Chifley Dam compared to the same time last year, according to council.