Irrigation & Sprinkler Systems in Southland

A zone is a group of sprinklers or drippers controlled by one valve, watering an area with similar needs. You need separate zones because lawn, garden beds and shady areas want different amounts of water, and water pressure limits how many heads run at once. More zones means better watering but higher cost.

No backflow device where it's required, no zone-by-zone quote, no as-built diagram at handover, ignoring local water-restriction rules, and a design that waters everything on one zone regardless of plant needs. An installer who skips the backflow/compliance question is cutting a corner that can be illegal and unsafe.

Repairs are usually modest: a broken sprinkler head, a leaking valve, a controller reset, or a winter-damaged line. Costs rise if a mainline leak needs digging or the controller/valve manifold needs replacing. A seasonal check-up that catches small leaks early is cheaper than the water wasted by an unnoticed one.

Sprinklers (pop-up rotors/sprays) suit lawns; drip lines suit garden beds, hedges and pots because they deliver water slowly at the roots with far less evaporation and waste. Most good systems mix both — sprinkler zones for turf and drip zones for planting. Drip is the water-efficient choice where it fits.

In-ground systems are priced per zone (a valve-controlled area) plus the controller, backflow device and any pump. Total cost scales with yard size, number of zones, and whether you use sprinkler heads, drip lines, or both. A small garden with a few zones is a fraction of a large multi-zone lawn-and-bed system.

In any climate that freezes, yes — water left in the pipes expands when it freezes and cracks lines, heads and valves, turning a cheap seasonal blow-out into an expensive spring repair. Warm, frost-free climates skip this but still benefit from an annual service. Ask whether winterization is included or a separate visit.

Automatic systems commonly run NZD 650-1,200 per zone installed, with a typical residential garden at NZD 2,500-5,500. Dripline for beds plus sprinkler zones for lawn is the usual mix.