Lake Moondarra Capacity

Thursday 21 June 2018 – 60.6%

 

Lake Julius Capacity

Thursday 21 June 2018- 92.4%

 

 Blue Gree Algae Level

Blue Green Algae Level - Low

Level: Low Date Sampled: 05 June 2018

 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. Learn More +

 FAQS

Why do we have a filtration system? What happened to Clear Water Lagoon?

In late 2013, a significant blue-green algae bloom caused Clear Water Lagoon’s natural filtration process to fail. This resulted in the water in the lagoon being unsuitable for Mount Isa Water Board to supply to Mount Isa City Council for use by the Mount Isa community without subsequent filtration. As there was no likelihood that the algae bloom could be resolved within a suitable timeframe, the Mount Isa Water Board urgently sourced a filtration system as an interim measure to ensure the continued supply of clean water to Mount Isa City Council.

The blue-green algae bloom in Clear Water Lagoon grow to be potentially the largest ever recorded in a Queensland water supply system. Levels of blue-green algae have risen to never before seen levels of more than 6 million cells per millilitre in March 2015 — 10,000 cells per millilitre is considered normal and acceptable.

While investigations are currently being undertaken into the future of Clear Water Lagoon, the Mount Isa Water Board now considers a filtration system essential to future operations. Recent events have demonstrated that Clear Water Lagoon can no longer be relied on to the extent it has been in the past and will not be able to meet the process assurance requirements of modern drinking water standards. A permanent water filtration facility has now been established to assure Mount Isa’s drinking water quality.

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What is the Mount Isa Water Board’s main function?

The Mount Isa Water Board’s main function is to carry out bulk water-related activities for Mount Isa.

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What are the current water restriction levels?

Water restrictions are set by Mount Isa City Council. Level 2 water restrictions came into effect on Monday 3 May 2015. For more information, visit www.mountisa.qld.gov.au.

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Where does our raw water come from?

Mount Isa’s raw water is supplied from either Lake Moondarra or Lake Julius. Lake Moondarra is 13 km downstream from Mount Isa and Lake Julius is more than 60km away. In normal conditions, all water is supplied from Lake Moondarra. However, when there is a drought, water is also supplied from Lake Julius.

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Why doesn’t the Mount Isa Water Board control blue-green algae in the lakes?

Blue-green algae activity is intermittent and influenced by weather. There are no sure, cost-effective methods that can be used to effectively and safely control the development of blue-green algae in Clear Water Lagoon, Lake Julius or Lake Moondarra. This is a challenge faced by many water authorities throughout Australia.

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