Changes to Ministry of Health Register of Drinking Water Testing Laboratories

Date: 9 May 2018
Author: Amanda Eady, Quality Manager - Regulatory

We are currently updating our processes to ensure continued compliance with Drinking-Water Standards for New Zealand 2005 (Revised 2008)1.

With the release of the IANZ Specific Criteria - Ministry of Health Register of Drinking Water Testing Laboratories (Third Edition)2, we are required to make a number of changes in the way we work with clients undertaking drinking water sampling for all public/community supplies. These changes include the following:

  • All drinking water samples for microbiological and chemical testing must be sampled in a Hill Laboratories supplied container. For microbiological testing a preserved (sodium thiosulphate) container will be required.
  • The unique sample site identification code(s) as listed in the Register of Drinking Water Supplies in New Zealand3 must accompany the water sample(s).
  • We are now required to hold information on the drinking water assessor for each site sampled/tested.
  • Report directly any transgressions for drinking water samples to the appropriate drinking water assessor.
We are asking that all clients involved in drinking water compliance provide us with the additional information required by emailing This can be recorded in individual quotes to ensure you only need to supply the information for each site once. 

If you need to switch to laboratory supplied containers, please discuss this with a Client Services Manager.

In future,failure to submit samples complying with the above criteria may cause testing delays or prompt sample rejection. If you have any queries about these new requirements, please contact a Client Services Manager on 0508 44 555 22. 

We look forward to continuing to work with in providing safe public drinking water.