Water Suppliers


Water Safety Plans (WSP)

The Health Act 1956 requires that all community drinking-water supplies serving populations greater than 500 persons to develop a Water Safety Plan (WSP) for their drinking-water supply.

A WSP is a written document that aims to assess and manage risks from contamination events or general failures associated with a specific drinking-water supply. Risks are identified from the water supply catchment right through to when the water is supplied to the public (a ‘catchment to tap’ philosophy). Our WSPs are specifically formulated and tailored to each water supplier ensuring that the risk assessment and risk management process meets legislative requirements but more importantly thoroughly describes ‘how’ water suppliers are keeping their customers safe. Wai Comply ensures that Water Suppliers are involved every step of the way when it comes to developing WSPs to instil confidence in the design and implementation of the WSP.

Our WSPs are designed to meet the latest industry requirements which include the identification and implementation of ‘Critical Control Points’ (CCPs). CCPs ensure current treatment barriers are operating and controlled in a way which prevents contamination events occurring.

Wai Comply can assist in the development of WSP’s to aid our clients in achieving compliance with the Health Act 1956.

Gisborne District Council engaged Wai Comply for the Water Safety Plans rewrites of two of our water supplies. From facilitating workshops with key stakeholders, writing the plans to assistance in liaising with the Drinking Water Assessor, they knew what to do and then did it on time and within the agreed budget."

Marcus Koll - Team Leader - Water


Drinking water standards for new zealand - requirements

Investigation and Management of Transgression Responses - Responding to drinking-water transgressions as required by law can be very complex. Given Wai Comply's directors have worked as accredited Drinking Water Assessors, we understand and therefore can apply, the immediate requirements to safe guard the drinking-water supply. Wai Comply can assist drinking-water suppliers to develop communications plans, remedial response plans, and develop final reports which adhere to the requirements of the Standards.

Catchment Risk Assessments - Undertaking a catchment risk assessment (CRA) is a process required by the Drinking-water Standards for New Zealand. This should be done every 5 years and is based on a water supplier undertaking a review of their water supply catchments and determining what sources of contamination may exist in the catchment and therefore could be present in the source water. The CRA process allows for the determination of “log credits” which determines what treatment is required to remove, inactivate, or kill any pathogens. CRAs can be completed as part of a WSP or as a standalone requirement.



Compliance Strategies and Reporting Requirements

Compliance Strategies - Wai Comply can support drinking-water suppliers to better understand the DWSNZ through undertaking a comprehensive review of each organisations compliance strategies across any number of water treatment plants or distribution zones. Given our in-depth knowledge of the DWSNZ we can review existing compliance strategies and determine whether the most robust compliance option is being utilised and/or adopted correctly. It is important for each organisation that across all key DWSNZ and legislative requirements there is a consistency of approach ensuring that DWSNZ compliance approaches and WSP are in alignment.

Compliance Reporting - Drinking-water suppliers must provide records (data) to Drinking Water Assessors to demonstrate compliance with the Standards on a routine basis. Such records can contain any matter of compliance records, from quarterly bacteriological samples (E.coli) to reporting continuous data every minute of the day (24/7). At Wai Comply we are proficient in a range of compliance monitoring and reporting software packages (i.e. Drinking Water Online). On behalf of a drinking-water supplier we can review and maintain compliance reporting systems ensuring all records are submitted to the Drinking Water Assessor in a comprehensive manner. 


Quality Assurance and Auditing

As a drinking-water supplier having an effective and efficient quality administration system is an essential part of achieving compliance with the Standards.  At Wai Comply, we have 10+ years of combined experience working as auditors under IANZ ‘Inspection Body (17020)’. Given our vast experience we feel we can aid our clients in designing and implementing quality administration practices through the development of; guidelines, protocols, standard operating procedures, and manuals. With our unique 'approach to achieving compliance' we can contribute any number of quality administration requirements with confidence.


"Gisborne District Council have recently engaged Wai Comply to be involved on a long-term basis in the upkeep and internal auditing of our Water Supply Quality Management System. Wai Comply have a structured “can do” approach and their high degree of professionalism and competence makes them a trusted advisor to us.”