Wairarapa's councils are devoting hundreds of millions of dollars in their long-term plans for repairs and upgrades to creaking infrastructure as the districts' headcount grows.
More people heading to Masterton, Carterton, and South Wairarapa will put even more pressure on pipe, roads, and facilities.
Some estimates see the 45,000-plus residents in the districts rise by at least 50 percent over the next 30 years.
Expectations set by Wellington regional planners are that the region's headcount will rise to 760,000 by the middle of the century.
With that, earlier reports of $80 million of infrastructure spending in Masterton were a drop in the ocean.
According to Masterton District Council's [MDC] long-term plan, that amount does cover the spending needed for Three Waters, over the next 10 years.
But Masterton's plans amount to almost $300m to cover repairs and upgrades.
Carterton and South Wairarapa councils are also making commitments for the next decade which may be put in place with council votes next week.
The votes come despite the uncertain future for local government.
A review panel of territorial authorities already aiming to have an interim report to ministers by September.
An update on the Three Waters review is also imminent, and resource management changes are also in the offing.
MDC has projects on the go already.
Contractors recently completed work in car parks in the town centre and footpaths, including upgrading 150 suburban footpaths.
Kaine Jaquiery, MDC's roading services manager, said the project reflected population growth.
"With increasing residential development, it is important that we make safe pedestrian options as accessible as possible."
Mayor Lyn Patterson said loan funding was used to spread the cost of projects fairly among all ratepayers who would benefit, including future ratepayers.
She said the impact on rates was the result of paying interest on loans and some capital.
"The council is a major business, and the majority of our capital expenditure relates to what many people consider essential basic services: roading, water, and community spaces and facilities.
"In addition to capital expenditure, we will also spend $54.3m in operating expenditure in 2021-2022, to be clear, one year, essentially business-as-usual running costs."
That includes:
- More than $13.3m on roading
- More than $4.6m on water supplies
- Nearly $7m on wastewater systems
- More than $7.5m on parks and recreation
- $5.3m on regulatory services
- $3.7m on community facilities and property
- $2.5m on the library and archive
MDC's capital budget over the next 10 years totals $295m.
Neighbouring Carterton District Council's 10-year-plan, to be put to councillors next week, includes capital expenditure of $88m and a projected operating budget of $240m.
Its plan, also to be put to councillors on Wednesday, includes $90m for roading and $123m on Three Waters.
South Wairarapa's council will look to increase its operational budget for Three Waters for the next year to $3.1m and capital spending to $6.2m.
Its 10-year statements see the total capital expenditure of more than $131m and operating costs of almost $297m.
All three councils meet on Wednesday to debate their plans.
Local Democracy Reporting is a public interest news service supported by RNZ, the News Publishers' Association and NZ On Air.