Three waters stimulus funding projects

On 8 July 2020, the government announced a funding package of $761 million to provide immediate post-COVID-19 stimulus to local authorities to maintain and improve three waters infrastructure, support reform of local government water services delivery arrangements, and support the operation of the new national water services regulatory agency, Taumata Arowai.

From this package Southland District Council was allocated $13.53 million to complete projects in Southland District, after Council signed a memorandum of understanding with the Crown regarding three waters reform.

The projects are being delivered in a collaboration between Southland District Council, the New Zealand government through the Department of Internal Affairs, and project managers Crown Infrastructure Partners.

The initial projects approved for completion are:

Waianiwa stormwater upgrade

Starting in early February, HWR Contracting will install a replacement and upgraded stormwater main along Waianiwa Oporo Road. This line will start at the intersection with Argyle-Otahuti Road and extend 500m east along Waianiwa Oporo Road, discharging into the existing ditch. The existing stormwater infrastructure in Waianiwa is in a poor condition and causing flooding issues on private land. This project is expected to take 2-3 months to complete.

Eastern Bush/Otahu Flat water rising mains

Starting in early February, HWR Contracting will install a replacement for both the Eastern Bush and Otahu Flat rising water mains. The mains are planned to be replaced from the north side of Grey Road, 1500m across private land (following the existing alignment) and reconnecting at the existing Eastern Bush main at Otahu-Eastern Bush Road and Otahu Flat reservoir, respectively. The existing infrastructure has been experiencing regular breakages. This project is expected to take 1-2 months to complete.

Riverton water main renewal - Rocks Highway

Starting in March, HWR Contracting will install a replacement water main in Riverton along Rocks Highway, from Roy Street to Evelyn Street. The existing infrastructure is in a poor condition and has experienced a number of breakages. This project is expected to take 2-3 months to complete.

Stewart Island stormwater upgrade

It is not yet known accurately when this project will start, given there is still design to be finalised and establishing on Stewart Island presents some challenges. Downer will engage an external consultant for design and then replacing some aged and undersized stormwater assets along Ayr Street. This project is expected to take 1-2 months to complete once construction starts.

Tuatapere water main renewals

Starting in March, Downer will install replacement water mains in Tuatapere. These mains will be installed: the full length of Sneyd Street; the raw water rising main along Elder Drive to the treatment plant; the treated water rising main along Elder Drive from SH99 to the water treatment plant and King Street, from Orawia Road to McVicar Street. The existing infrastructure is in a poor condition and has experienced a number of breakages. The Elder Drive and King Street mains are regarded as critical pieces of infrastructure. This project is expected to take 3-4 months to complete.

Orepuki stormwater upgrade

It is not yet known accurately when this project will start, given there is still design to be finalised. Fulton Hogan will engage an external consultant for design and then installing new stormwater infrastructure to redirect the existing outfall from the end of Dover Street. This existing outfall is causing significant issues with coastal erosion and will be redirected to ensure no further damage continues. This project is expected to take 2-3 months to complete once construction starts.

Lumsden water main renewals

Starting in March, Fulton Hogan will install replacement water mains in Lumsden. These mains will be installed: the full length of Helena Street; full length of Folia Street and Laura Street, from Helena to Flora Road. The existing infrastructure is in a poor condition and has experienced a number of breakages. This project is expected to take 2-3 months to complete.

Riverton pumped sewer

Starting early February, Wilsons Contractors will install a new pumped sewer main along Princess and Carrol Streets in Riverton. The line will start from Ngarimu Street and run along to the end of the road berm at the entrance to the Riverton Golf Club on Carrol Street. This project is to enable the dwellings, existing and future, to connect to the reticulated sewer network in Riverton. This project is expected to take 1-2 months to complete once construction starts.

Otautau water main renewals

Starting in March, Wilsons Contractors will install replacement water mains in Otautau. These mains will be installed the full length of Mary Street, Russell Espanade and Harbison Street, linking the works that were completed last year along Liemen Street and Main Street. The existing infrastructure is in a poor condition and has experienced a number of breakages. This project is expected to take 2-3 months to complete.

Further project allocations to be released from April:

Caswell Road sewer

The existing sewer in Caswell Road, Te Anau, was installed in 1972. Continued development within the contributing catchment for this sewer line has meant the line is not meeting the required capacity and is planned to be upgraded to a larger pipe size, along the existing alignment. This will likely affect Caswell Road from number 1 to 48, Snodgrass Road and a portion of the State Highway around the Caswell Road intersection. This project is expected to take 4-5 months to complete once construction starts.

Towack Street stormwater upgrade

Council has stormwater assets in private property at 25 Towack Street in Riverton. These assets capture a reasonably sized stormwater catchment from surrounding properties and roads. The existing infrastructure is undersized and of poor condition. New infrastructure will be installed along the driveway of 25 Towack and join into existing infrastructure before the beach outfall. Connections will be made to surrounding properties. This project is expected to take 1-2 months to complete.

Wyndham stormwater upgrades

Council has engaged WSP to develop a master plan for the Wyndham stormwater system and begin design on upgrading the reticulated infrastructure. Following design outputs, the contractor panel will be engaged to construct the renewed/upgraded assets. The existing infrastructure is undersized and of poor condition. This project is expected to take 14 months to complete as part of the stimulus funding. Further allowances have been made in Council’s Long Term Plan 2021-2031 to continue with the upgrades. This is a significant project for Council and the Wyndham township and is long overdue, given the condition of the existing assets.

Further AC water main renewals

Additional water main renewals packages are planned for Tuatapere, Riverton, Ohai and Te Anau. These will be of similar scope to the packages already allocated.