Water Supply


We provide constant, sustainable and high quality water to communities throughout the Peninsula. Due to the geography and location of townships, we operate nine water treatment plants to achieve this. 

You may hear us talk about water demand management. This means looking at the water cycle as a whole and managing its use in the most environmentally sustainable and cost-effective way possible.

Ways we can reduce water consumption and wastage are now addressed in our Water Demand Strategy.

There is a great deal that we - the Council and the consumer - can do together to preserve this precious resource and reduce our impact on the natural environment.

The process starts with collecting water from the natural environment.  We are permitted, through appropriate resource consents to collect raw water from streams in Thames, Coromandel, Whitianga, Matarangi, Tairua and Pauanui. We also take raw water from Puriri, Omahu and Matatoki but these raw water intakes receive only limited treatment.

In Whangamata, Hahei and Onemana, groundwater is abstracted through bores.  Varying levels of treatment are used.

Groundwater also supplements supplies at Pauanui and Matarangi.

The water systems also provide water for fire fighting. Without an adequate water supply, the fire fighting service would be unable to do their jobs and public health and safety would be at risk.

The statistics

  • Average daily use 13 million litres per day
  • Rising to 25 million litres per day in peak summer

Our goal

Our goal is to provide adequate and safe water for both drinking and fire fighting purposes and the promotion of water conservation.

We provide adequate, safe and potable water supplies via nine urban water supply schemes throughout this district.

Urban Schemes:
  1. Thames
  2. Coromandel
  3. Matarangi
  4. Whitianga
  5. Hahei
  6. Tairua
  7. Pauanui
  8. Onemana
  9. Whangamata


Rural Schemes:

Other rural schemes where potable water is not provided and point of use treatment is recommended are:

  1. Thames Valley including Puriri, Omahu, Wharepoa and Hikutaia.
  2. Matatoki

These schemes also provide adequate pressure to ensure water supply for fire fighting, with the exception of Thames Valley and Matatoki.

We also promote efficient water use and ensure that water demand management practices are implemented.  Ways we can reduce water consumption and wastage are now addressed in our Water Demand Strategy, which was adopted by Council 19 September 2017.

Your Community’s Water Sources

  • Thames Urban 
    Mangarehu Stream and Kauaeranga River
  • Coromandel 
    Karaka Stream and Waiau Stream
  • Matarangi
    Opitonui River and groundwater
  • Whitianga
    Whangamaroro River
  • Hahei 
    Groundwater bore
  • Tairua 
    Pepe Stream and Tributary
  • Pauanui
    Oturu Stream and groundwater bores
  • Onemana 
    Groundwater bores
  • Whangamata
    Groundwater bores at Wentworth Valley, Beverley Hills and Moana Point
  • Thames Valley 
    Omahu (supplies Omahu, Wharepoa and Hikutaia) and Apakura Stream (supplies Puriri)
  • Matatoki
    Matatoki Stream

RMA Consent Renewal

Council is required, by the Resource Management Act, to obtain consents for many of its water related activities.

Consents are required for

  • Abstraction of water for drinking water supplies and associated structures such as dams and intakes
  • Discharges from wastewater treatment plants and associated structures odour discharges
  • Discharges of urban stormwater and associated structures such as culverts and headwalls

As of November 2018, we are in the process of renewing consents for:

Abstraction from the Omahu Stream

The Omahu water take is part of the Thames Valley Scheme and is the Council water source for the Omahu, Wharepoa and Hikutaia areas.

The current consent expires in March 2019 and the renewal application has been submitted to continue abstraction at the current levels but with the intent for a significant reduction as pipes are replaced and leakage identified.

Discharge from the Thames Wastewater Treatment Plant

The Thames WWTP has been servicing the Thames community for many years. The plant functions well and meets the needs of the community.

The plant has been, and remains, fully compliant with conditions of the existing consent.

The current consent expires in June 2019. Council has been, and remains, fully compliant with the current consent.

It is intended to seek to renew the consent with similar requirements although it is expected that some improvements in the discharge quality will be mandated.

Discharge from the Matarangi Wastewater Treatment Plant

The current consent expires in December 2020 A working group has been established since June 2016 and 15 effluent discharge options have been considered.

The application for the new consent will be lodged mid-2019.

Discharge from the Cooks Beach Wastewater Plant

The current consent expires on 30 June 2019. Council has been, and remains, fully compliant with the current consent.

Application for consent replacement will be lodged before 31 March 2019.

Additional groundwater monitoring has been implemented, and further surface water monitoring is intended during the summer this year, to provide additional data to support the application and facilitate on going monitoring.