Irrigation · Materials

Irrigation materials

Residential irrigation is built mostly from rigid PVC or flexible polyethylene pipe, with fittings, zone valves, and either spray or rotor heads on the lawn and drip tubing with emitters in beds. Which pipe a contractor uses is largely regional — PVC is common in warm climates, flexible poly where freezing and ground movement matter — and neither is inherently better. What matters more is depth, fittings quality, and whether heads are installed on swing joints so a mower strike bends rather than snaps the line.

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Drip is the material decision with the largest efficiency payoff. WaterSense's landscaping guidance recommends drip irrigation for shrubs and edible plants, because it delivers water at the root zone instead of throwing it into the air where it evaporates and drifts. If your beds are currently watered by spray heads, converting them is usually the best value change available.

Swing joints matter more than the brand of head. A head plumbed rigidly to the lateral snaps the fitting — or the pipe — when a mower or a car hits it. On a flexible joint, the head takes the damage and the repair is a ten-minute swap. Ask whether swing joints are included; if they're not in the bid, ask what it costs to add them.

Wire and splices are materials too, and cheap ones cause the most annoying failures. Direct-burial wire with waterproof splice connectors in accessible valve boxes is the standard to ask for. Splices buried loose in soil are a future diagnostic bill.

Ask for the zone map and the parts list. Knowing what pipe, what heads and what nozzles are in your yard means the next repair is quick and the next contractor doesn't charge you to rediscover it.

How to choose

Use drip in beds: WaterSense recommends drip for shrubs and edible plants — water goes to roots instead of into the air.
Insist on swing joints: They turn a mower strike from a pipe repair into a head swap. Cheap to add, expensive to omit.
Ask about burial depth and local practice: Depth requirements and freeze practice vary regionally. Ask what depth they install to and why.
Waterproof splices in accessible boxes: Wiring faults are common. Make them findable before they happen.
Get the parts list in writing: Head models, nozzle types and pipe spec. It makes every future repair cheaper.

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All irrigation materials

PVC Irrigation Pipe

Poly Irrigation Tubing

Drip Line

Valve Boxes

Fittings and Couplings

Wiring for Irrigation Valves

FAQ

Irrigation materials — common questions

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Is PVC or poly pipe better for irrigation?

Neither universally. PVC is common in warm climates, flexible polyethylene where freezing and soil movement are factors. Local practice and your installer's experience matter more than the material label.

Should my garden beds be on drip?

In most cases yes. WaterSense recommends drip irrigation for shrubs and edible plants because it delivers water directly to the root zone with far less evaporation loss.

What is a swing joint?

A flexible connection between the lateral pipe and the sprinkler head. It absorbs impacts so a mower strike breaks a cheap head rather than the buried pipe.

How deep should irrigation pipe be buried?

It varies by region, freeze depth and local practice. Ask your contractor what depth they install to and why — and confirm it matches what's normal locally.

Sources

Where these figures come from

EPA WaterSense — Landscaping Tips · retrieved 2026-07-26