Summer irrigation leaks and the Sacramento water bill
Sacramento summers mean long watering schedules, and a broken line under the lawn can quietly double a bill.
By Nora Chambliss, Plumbing Articles EditorPublished June 4, 2026

Why summer bills jump
Irrigation systems run more often in the long valley summer, and every zone that leaks loses water every cycle. A broken lateral line under turf or a cracked valve in a box can leak for weeks before anyone notices a soggy spot.
Check your meter
Turn off the irrigation controller and every fixture in the house. Then look at your water meter's leak indicator, usually a small triangle or star on the dial. If it moves, water is leaking somewhere. Turn the irrigation supply back on with the controller still off. If the indicator moves only then, the leak is on the irrigation side.
If it moves even with irrigation isolated, the leak may be in the house or on the service line. Our leak detection visit separates them.

Common irrigation trouble spots
Valve boxes where fittings crack, lines nicked by edging or aeration, sprinkler heads broken by mowers, and backflow devices that drip. Lines under driveways and walkways are harder to spot.
What plumbers fix versus landscapers
We repair the supply line that feeds irrigation, the backflow device and the house-side plumbing. Sprinkler heads, controllers and zone wiring are landscaper work. Knowing which side the leak is on saves you calling the wrong trade.

A simple monthly habit
Once a month in summer, read your meter at night after the last watering cycle and again first thing in the morning before anyone uses water. If the reading changed overnight with nothing running, something is leaking. Catching it in the first month instead of the third can save a lot of water.
Do not forget the hose bibs
A hose bib that leaks at the handle while the hose is on can push water into the wall behind it. Summer is when we replace the most outdoor faucets.
Questions readers ask
How much can an irrigation leak cost?
It depends on the size of the break and how long it runs, but a steady leak can add thousands of gallons a month.
Can a service line leak look like an irrigation leak?
Yes. Both show up as wet ground in the yard. Isolating with the meter tells them apart.
About the author
Nora Chambliss edits the plumbing articles for John's Plumbing, turning what our plumbers see on Sacramento-area jobs into plain guides for homeowners.
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