Water lost to leaks could be costing New Zealand more than $100 million each year. 

Otago University research found across the country, 20% of treated drinking water is lost to leaky pipes, at an estimated cost of $122 million. 

Co-author of the report, Marnie Prickett told Mike Hosking that our levels of water loss are much higher than international comparisons. 

She says Tokyo loses only 5% of water and US cities lose around 10%, so our levels are significant. 

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