Drinking water quality and testing

Water comes from rivers or ground bores, so we regularly test drinking water to make sure the supply is safe. Learn more about water quality in your area and where your water comes from.

Water supplies across the Tasman District from Murchison to Collingwood are regularly tested. None of our water supplies have fluoride added.

Motueka/Riwaka groundwater quality 

The report detailing the groundwater quality results and findings from the 2019 survey has been released. Read more about it and see the results here. 

Aorere/West Coast bore water quality survey

We're preparing to test selected bore water quality in Aorere/West Coast area. If you live in the area and use a bore for any purpose, we would love to hear from you to help us complete the first part of our research.

Read more about the survey and how to get involved.

Need help?

If you would like assistance or further information about water supply quality, please contact us.

Individual supplies

In addition to regular testing for public health, people interested in home brewing will find water quality information useful. In addition, Some newer dishwashers also require 'hardness' information.

Note that if you need ‘hardness’ in mmol/l, rather than mg/l as CaCO3 (as reported here, simply divide the reading by 100 to get an approximate answer. (e.g. Richmond 135mg/l becomes 1.35mmol/l).

Why we chlorinate
About the regular testing
Brightwater / Hope water supply and quality
Collingwood water supply and quality
Dovedale rural water supply and quality - permanent boil water notice
Eighty-Eight Valley rural water supply and quality
Kaiteriteri water supply and quality
Motueka water supply and quality
Murchison water supply and quality
Pōhara water supply and quality
Redwood Valley rural water supply and quality
Richmond water supply and quality
Tapawera water supply and quality
Upper Takaka water supply and quality
Waimea, Māpua / Ruby Bay water supply and quality
Wakefield water supply and quality

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