Lake Moondarra Capacity

Tuesday 23 October 2018 – 47.0%

 

Lake Julius Capacity

Tuesday 23 October 2018 – 83.4%

 

 Blue Green Algae Level

Blue Green Algae Level - Low

Level: Low Date Sampled: 12 October 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

What are the roles of the Mount Isa Water Board and Mount Isa City Council in the supply of water to the city?

The Mount Isa Water Board is responsible for supplying bulk treated water to Mount Isa City Council. The Board conducts extensive water quality tests to ensure the water meets Australian Drinking Water Guidelines.

Once the Mount Isa Water Board has provided the water to Mount Isa City Council, the Council is responsible for the supply of water to Mount Isa residents through its extensive pipe network. Mount Isa City Council is also responsible for conducting further chlorination and testing of the water prior to its distribution to residents.

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Why was a water levy imposed?

The levy, in place during 2014-15 financial year, was a matter for Mount Isa City Council. As per the Mount Isa Water Board’s contract with Council, the essential major expense associated with implementing the emergency leased filtration system was passed on at cost price.

As part of negotiations for new equipment in 2015, the Mount Isa Water Board has negotiated with the supplier to secure a substantial reduction in charges effective 1 February 2015 for the current filtration system. The cost was now been reduced from $250,000 per month to $10,000 per month, saving Council $1.19 million in the 2014-15 financial year which was been rebated to rate payers.

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How much water does Mount Isa use?

In February 2015, approximately 16.9 mega litres (or 16.9 million litres) of water is being used on average each day in Mount Isa. This equates to approximately 600 litres per person per day.

This water usage is considerably higher than the same time last year. In February 2014, approximately 11.4 mega litres (or 11.4 million litres) of water was used on average in Mount Isa each day. This equates to approximately 400 litres per person per day.

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Why don’t we top up Lake Moondarra with Lake Julius water?

The Mount Isa Water Board supplies customers from Lake Julius on an as-needed basis, and as requested by its customers. As supply from Lake Julius is significantly more expensive than from Lake Moondarra it is only supplied when necessary.

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How does the Mount Isa Water Board treat the water?

Historically, the water in Mount Isa has been treated using a natural filtration and treatment process in Clear Water Lagoon. However, in late 2013, a significant blue-green algae bloom caused the lagoon’s natural filtration process to fail. This resulted in the lagoon being unable to provide water of an appropriate quality for 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.

In 2015 the blue-green algae bloom in Clear Water Lagoon grew to be potentially the largest ever recorded in a Queensland water supply system, with more than 6 million cells per millilitre (recorded 3 March 2015). 10,000 cells per millilitre is considered normal and acceptable. New, permanent micro-filtration treatment equipment was introduced in March 2015, expanding on the capacity of the emergency plant and providing an appropriate standard of assurance to the quality of drinking water supplied to Mount Isa City Council.

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