Last week, Wanaka learnt a section of Ardmore St will be closed in both lanes for six months from Monday, April 11, so contractors can upgrade the lakefront and build 110 car parks.
That project should be finished by September.
The drinking water projects should be completed by November while a major wastewater project should be done by December.
Queenstown Lakes District Council (QLDC) property and infrastructure general manager Peter Hansby said there would be "some disruption" during the wastewater upgrade, "including partial and possibly full road closures and traffic diversions".
However, access would be maintained for residents, rubbish and recycling services, and emergency vehicles.
The first stage of the wastewater upgrade starts this month.
Closer to Mt Iron, a new water supply pipe will be connected to existing pipes under the Sir Tim Wallis Dr roundabout and the Albert Town wastewater pumping station will get new network connections.
A new pumping station is being planned but this part of the project is to be finalised.
Meanwhile, contractors have started clearing a site for a new drinking water pumping station on the corner of Bills Way and Mt Aspiring Rd.
Work has also begun on a new 2km water pipeline along Golf Course Rd, up Macpherson St and towards Anderson Rd.
"Following site clearance, we’ll start building. There may be periods where it seems nothing is happening on site, and that’s when we’ll be installing the below ground pipework," Mr Hansby said.
Wanaka Community Board chairman Barry Bruce said in his March 31 report the Bills Way pumping station would provide increased resilience and supply of drinking water to west Wanaka.
"These works also enable future projects related to the wider Wanaka supply," he said.
However, Lake Hawea had to wait a bit longer for a major wastewater system upgrade.
Mr Bruce said that the project was still being designed and staff were refining options for the pipeline and pumping station.
There were no material updates to information released in December and public information sessions should be delayed until the concept designs were finished in June or July, Mr Bruce said.
The pipeline alignment required consultation with specific landowners, which ideally had to happen before wider community engagement, he said.
The existing Hawea Wastewater Treatment Plant was built in 1988 and upgraded in 2000.
It is unable to meet present and projected demand.
Short-term upgrades, having a design life of five years, would provide some relief until the long-term solution could be put in place, Mr Bruce said.
