Getting the best water tank installation in Whanganui comes down to who sizes the tank, prepares the base and connects it to your downpipes, pump and filters. Rainwater storage is now part of many new builds across the district, and rural and lifestyle blocks outside town still run on tank water year round. Laser Plumbing Wanganui and Manawatu Contracting both handle water tanks from the slab up, in poly and concrete, for town sections and farms alike.
1Laser Plumbing Wanganui
Laser Plumbing Wanganui is a family plumbing, gasfitting and drainlaying business at 11/13 Churton Street, trading in the district since 1973 and owned and operated by local plumbers Kaden Clark and Grant Little. The team installs water tanks from 300 to 30,000 litres and works with suppliers on retention and detention solutions to match a set of plans. It suits homeowners adding rainwater storage to a new build, and rural and lifestyle owners whose water supply is the tank.
Services
- Water tank supply and installation, 300 to 30,000 litres
- Rainwater harvesting for household supply, garden use and fire safety storage
- Water pump installation and servicing
- Water filtration, water softeners and UV treatment
- Drainage, drainlaying and Biolytix wastewater treatment
Highlights
- Family business serving the Whanganui region since 1973, continuing from Ross Clark the Plumber
- Certified and licensed plumbers, gasfitters and drainlayers on the team
- Joined the national Laser group in 2017 and works to its Totally Dependable service guarantee
- Covers Whanganui, South Taranaki, Rangitikei, Ruapehu and the Marton district, and is available 24 hours
Location & Contact
Name: Laser Plumbing Wanganui
Address: 11/13 Churton Street, Whanganui 4500
Phone: (06) 348 0162
Website: laserplumbingwanganui.co.nz
2Manawatu Contracting & Drainage
Manawatu Contracting & Drainage is a drainage and earthworks contractor based at 145 Mulgrave Street in Ashhurst, working from the Kapiti Coast through to Whanganui and Central Hawke’s Bay, so it travels to Whanganui jobs rather than operating from the city. The crew supplies and installs both concrete and plastic water tanks and handles the site preparation around them, including excavation and the drainage that carries overflow away. It is set up for rural and lifestyle properties where the tank sits alongside a septic system and a long driveway.
Services
- Water tank supply and installation in concrete and plastic
- Septic tank installation and servicing, with an engineer’s report supplied
- New and replacement house drains and land drainage
- Site excavation, driveway excavation and auger hole boring
Highlights
- Specialises in rural and lifestyle properties rather than town infill work
- Supplies metal and runs a landscape supply yard at Ashhurst, so base material comes with the job
- One contractor covers tank, septic system, drains and site preparation on the same visit
Location & Contact
Name: Manawatu Contracting & Drainage Limited
Address: 145 Mulgrave Street, Ashhurst 4810
Phone: 06 326 7275
Website: manawatucontracting.co.nz
How to Choose the Right Water Tank Installer in Whanganui
- Check the installer handles the whole job, from the tank base and positioning through to downpipe, pump and overflow connections, not delivery alone.
- Match the material to the site: poly tanks are lighter and easier to place on a tight section, while concrete suits below ground and heavy demand.
- Size the tank around roof catchment and household use before you shop on price, and ask whether stock water or fire storage needs to be part of it.
- Use a registered plumber or drainlayer where the tank is plumbed into the house, so the work meets the plumbing regulations and your council requirements.
- Ask who restrains the tank against wind and seismic loads, who supplies the base material, and whether filtration or UV treatment is quoted separately.
Frequently Asked Questions About Whanganui Water Tank Installation
What does a water tank installer actually do?
A full installation covers choosing and supplying the tank, preparing a level base, positioning and restraining it, then plumbing it in: downpipe and first flush connections, the pump, filters, the overflow, and the tie in to the house or trough lines. Some jobs also need excavation for a below ground tank or a new drain to take the overflow.
Do I need a building consent for a rainwater tank?
It depends on the tank size, where it sits and whether it connects to the house plumbing or stormwater system, so check before you order rather than after. The Whanganui District Council can confirm what your specific job needs, and a good installer will raise it with you at the quote stage.
How do I check the plumber doing the work is registered?
Plumbing, gasfitting and drainlaying are restricted trades in New Zealand. You can search a tradesperson’s current registration and licence on the Plumbers, Gasfitters and Drainlayers Board register before the job starts.
Poly or concrete: which tank suits a Whanganui property?
Polyethylene tanks are lighter, cheaper to cart in and easy to place where access is tight, which covers most town sections and smaller lifestyle blocks. Concrete tanks are heavier and better suited to below ground installation or high demand supply, and both installers on this page work with either.
How big should my tank be?
It comes down to roof catchment area, how many people are on the supply and how long the dry spells run. Household supply on a rural block usually calls for a much larger tank than a garden or stormwater detention tank on a town section, and an installer will size it off your plans and water use rather than a rule of thumb.
Which parts of the district do these installers cover?
If you are looking for water tank installation Whanganui wide, the Churton Street plumbing team covers the city and the surrounding Rangitikei, Ruapehu, Marton and South Taranaki districts, so Castlecliff, Gonville, Aramoho and the rural roads out towards Fordell and Kai Iwi are all within reach. The Ashhurst contractor travels north to Whanganui from the Manawatu for rural and lifestyle work.
Can a tank be added to an existing house?
Yes. Retrofitting usually means adding a tank beside the house, diverting one or more downpipes into it, then either running it to the garden and outside taps or plumbing it through a pump and filter into the household supply. The existing spouting and downpipe layout decides how much work is involved.
What ongoing maintenance does a tank need?
Keep leaf guards and first flush diverters clear, check the inlet screens and the pump seasonally, replace filter cartridges and UV lamps on schedule, and have the tank cleaned out when sediment builds up. A tank plumbed into drinking water supply needs more attention to filtration than one used only on the garden.