Lake Moondarra Capacity: Friday 26 June 2015 – 61.1%


What are the current water restriction levels?

Water restrictions are set by Mount Isa City Council. Level 4 water restrictions came into effect on Monday 9 February 2015. For more information, visit

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Why isn’t the current filtration system meeting the city’s demand for water?

In recent weeks, a significant increase in the city’s water usage to higher than average levels has put substantial pressure on the filtration system. At the same time, the capacity of the filtration system has been reduced due to the continued expansion of a blue-green algae bloom and increased organic matter in the water supply caused by recent rain.

When selecting a filtration system, the Mount Isa Water Board worked in close consultation with Mount Isa City Council to find the best, immediate solution available based on average water usage at the lowest possible cost to Council.

A system capable of filtering 18 mega litres per day was selected, as this was in excess of the city’s prevailing water consumption and in line with many similar-sized cities. Alternative options with greater capacity were considered, but would have been considerably more expensive.

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Does the Mount Isa Water Board make a profit?

The Mount Isa Water Board has made a profit in most years and has consequently paid taxes and dividends to the State Government.

From the time the Mount Isa Water Board was commercialised in 2000 until 2011–12, all dividends and taxes were passed on by the State Government to Mount Isa City Council.

Current State Government policy is that Mount Isa City Council will receive 50% of the total dividends and taxes generated by the Mount Isa Water Board in a financial year (July to June). However, this is conditional upon the Mount Isa Water Board making a profit for the year.

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Are blue-green algae unsafe?

Some species of blue-green algae produce a toxin that can cause a reaction in susceptible people if it is swallowed or gets on the skin. Reactions include a rash, hayfever-like symptoms or stomach aches.

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Does blue-green algae cause Motor Neurone Disease?

Following recent media coverage on this topic Queensland Department of Health have released a statement.

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 Blue Gree Algae Level

Blue Green Algae Level - Low

Level: Medium
Date Sampled: 15 June 2015

 Open Data

The Mount Isa Water Board is committed to the Queensland Government’s Open Data initiative.

The Board has developed an Open Data Strategy detailing our data assessment processes and identifying data planned for release and the release schedule. The strategy reinforces our commitment to making a range of information available to the community.

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