Irrigation research

The national scale-up is striking: EPA estimates that if every U.S. home with an automatic sprinkler system used a WaterSense labeled controller, the country could save 390 billion gallons of water and $4.5 billion in water costs annually — equivalent to the yearly household water needs of about 5 million American homes.

At household scale, the single most quotable figure is the broken head: up to 25,000 gallons and $280 wasted over a six-month irrigation season, per EPA WaterSense. That's the number to keep in mind when deciding whether a repair visit is worth booking.

On costs, aggregator data is a market picture rather than a quote. LatestCost puts per-zone installation at roughly $200 to $700 with an average near $350 and labor at $60 to $120 an hour; Homewyse's May 2026 calculator works out to about $1.04 to $1.91 per square foot of coverage; LawnStarter puts winterization at $59 to $144 and spring reactivation at $45 to $140.

Where we can't cite, we don't publish. Watering restrictions, permit rules, backflow testing frequency and rebate amounts are all local and change, so the honest answer on those is always a pointer to your own water utility and building department.

How to choose

Prefer EPA figures to vendor claims

WaterSense numbers are published, methodologically consistent and free of a sales motive.

Use cost aggregates as ranges

Per-zone and per-square-foot figures are for judging outlier bids, not for setting a budget to the dollar.

Localize anything regulatory

Restrictions, permits, testing frequency and rebates are set locally and change during a season.

Measure your own system

Your water bill and the can test are the most relevant data you'll ever have about your yard.