All registered drinking water suppliers must use an accredited laboratory to test source water, raw water and drinking water. 

Laboratories currently recognised by the Director-General of Health for the purposes of Part 2A of the Health Act 1956 will automatically be accredited laboratories under the Water Services Act 2021.  They will be able to continue to provide water analysis services for a transitional period. 

Accreditation is managed through International Accreditation New Zealand (IANZ). The Water Services Act gives Taumata Arowai the authority to appoint an accreditation body for laboratories. We’re in the process of appointing IANZ to this role. This will enable them to continue to determine your accreditation as they have under the regime administered by the Ministry of Health. The change won’t affect your operation. 

Level 2 laboratories with a current certificate confirming recognition can continue to provide water analysis services, but must be accredited under the Water Services Act by 15 November 2024 at the latest. If a Level 2 recognised laboratory opts not to obtain accreditation by the deadline, they will not be able to offer water analysis services for the purposes of the Water Services Act. IANZ can provide information on how to become accredited.