Drinking water standards upgrade

APRIL 2019 

Making progress on our drinking water treatement plant upgrades

Work is well underway with our programme to upgrade ten water treatment facilities across our district.

The first plant to be upgraded is our Whitianga water treatment plant, where Masons Engineers has been building a new $2.8 million water treatment facility on the current site.This is a brand new plant (pictured below), with the latest technology and methodologies for treating our water. Good progress has been made and this plant is expected to be in service by the end of May. 

(Pictured: The new water treatment facility in Whitianga)

Tairua and Pauanui are the next towns on the schedule and an update on works is provided below:

Tairua: Masons Engineers has been appointed for the works to replace the water treatment plant in Tairua and the design is almost complete. We are waiting for Department of Conservation approval of a new lease for the reservoir site and, pending this, site works will commence in earnest in May 2019 with commissioning due in September 2019.

Pauanui: Design is also well advanced for upgrade work at Pauanui and the contract works are expected to start in late May, with the treatment plant expected to be commissioned later this year.

The amalgamation of the two Pauanui water treatment plants has necessitated that a new main be installed between the existing high elevation reservoir and the town reticulation. This is because the existing 35 year old pipe is not rated for the pressure from the reservoirs. This preliminary work to install a new mains pipe is currently underway and is expected to be completed by the end of May.

Plans to improve foundation capability for the new plant building are being incorporated with earthworks that are underway to maximise the separation between the proposed new site and the emergency wastewater storage pond and the development that is being undertaken between the tennis courts and the wastewater treatment plant.

Work schedule: 

The next towns on the upgrade schedule are the three Whangamata plants and Onemana, followed in the final year by Coromandel, Matarangi and Hahei.

All of these upgrades will ensure our drinking water quality complies with the 2005 (2008) NZ Drinking Water standards. For more information on our compliance with the government’s new testing regime see here.

"We're being proactive about what we need to do to keep improving the quality of our drinking water supplies and we have budgeted $15.83 million in the 2018-2028 Long Term Plan for the upgrade programme, which will take three years through to June 2021," says our Mayor Sandra Goudie.

"This is a significant investment to become compliant and so our communities benefit from improved quality of drinking water and public health," Mayor Sandra says.

Five of the drinking water plants that treat river-supplied water (Coromandel Town, Thames, Tairua, Whitianga, Matarangi), will use membrane filtration technology, the highest-quality treatment available for this type of water source. The Memcor brand membranes are being supplied by Evoqua Water Technologies. The other five drinking water plants will use filter/cartridge system for treating bore-supplied water.

The drinking water treatment plant at Thames was upgraded more recently than the other plants, and is not due for an upgrade as part of this project. 


OCTOBER 2018

Upgrade programme begins at our water treatment facilities

Work has started to upgrade our ten water treatment facilities across the Thames-Coromandel district.

The upgrades will ensure our drinking water quality complies with the 2005 (2008) NZ Drinking Water standards. For more information on our compliance with the government’s new testing regime see here.

Our Council continues to be proactive about what we need to do to keep improving the quality of our drinking water supplies and has budgeted $15.83 million in the 2018-2028 Long Term Plan for the upgrade programme, which will take three years through to June 2021.

Our Mayor Sandra Goudie says this is a significant investment to ensure compliance and that our communities benefit from improved quality of drinking water and public health.

The first plant to be upgraded is the Whitianga water treatment plant, where Mason Engineering is building a new $2.4M water treatment facility on the current site. .

Site works are due to start in the first week of October, 2018.

The upgrade schedule will continue to the water treatment facilities at Tairua and Pauanui over the next year. Whangamata and Onemana will be completed in year two, followed by Matarangi, Coromandel Town and Hahei.

Five of the drinking water plants, which treat river-supplied water, will use membrane filtration technology, the highest-quality treatment available for this type of water source. The Memcor brand membranes are being supplied by Evoqua Water Technologies. The other five drinking water plants will use filter/cartridge system for treating bore-supplied water.