Fast-growing towns outside the city: Rolleston and Lincoln in Selwyn, and Rangiora, Kaiapoi and the planned town of Pegasus in Waimakariri, with a high share of homes built in the last two decades. We handle both. That covers sizing and placement, connecting to spouting and downpipes, pressure pumps, first-flush diverters, filtration and UV, frost protection, and any mains top-up with the backflow protection it needs.
Rainwater tanks across Selwyn and Waimakariri: metered water and rural tanks
Outside the city, rainwater tanks do different jobs in different towns. In Selwyn, households in Rolleston and Lincoln pay for every cubic metre of council water, so a tank collecting rain off the roof for garden use saves money straight away. In Waimakariri, rural properties around Rangiora and Kaiapoi often rely on restricted supplies that trickle into a tank, and extra rainwater storage takes pressure off that supply.
New homes in Rolleston, Lincoln and Pegasus have large, clean roofs and modern spouting, ideal for collection. Building a tank in at the start is easier than adding one later, because the base, pump power and overflow can be planned with the house. For existing homes, slimline tanks fit beside garages and fences without taking much space.
Kaiapoi's ground needs care. Large areas were red zoned after 2010, and groundwater can be high near the river, so we favour above ground tanks on well compacted bases. On lifestyle blocks, larger tanks may supply stock, gardens and the house, and we size them for dry periods. Where water is used for drinking, keeping it safe is the owner's job, so a filter and UV unit are added where needed.
Canterbury frosts affect pumps and exposed pipe in all these towns, so we insulate and protect the system. Leaf screens and first flush diverters are included, connect overflows to stormwater or a soakage area, and fit backflow protection if tank water is plumbed into a house that also has a council supply. Before quoting, we come out to size the roof catchment and agree where the tank goes.
Pegasus homes near the lake have open, windy sites, so tanks there need secure ties as well as a solid base, because an empty plastic tank is light enough to shift in a strong nor'wester. We strap and anchor each tank as part of the install.
Local tip: In Rolleston or Lincoln, compare your water bill before and after adding a garden tank, because every cubic metre saved is charged water you no longer pay for.
For anything else, see our plumbers in Selwyn and Waimakariri.
Pricing: quotes are free, and every job gets a fixed price before we start, so there are no surprises on the invoice.
Water Tanks Jobs We Do in Selwyn and Waimakariri
- UV for tank water
- Tank pump setups
Water Tanks Selwyn and Waimakariri FAQs
Can I plumb a rainwater tank into my Rolleston house for toilets?
Yes, with a pump, a top up from the council supply and a backflow device separating them. We design it to suit Selwyn District Council's requirements.
I am on a restricted supply. Can you work on my tank?
Yes, on the private side: the tank, pump and pipes to the house. Do not alter the council's restrictor, which is chargeable.
Can a tank supply my toilets and washing machine?
Yes. That needs a pump and usually a building consent, and the plumbing must be done by a licensed plumber.