A broken sprinkler lateral can hide for months — the system still runs, the lawn mostly looks fine, and the only evidence is a climbing water bill. Digging up the zone on a hunch is the expensive way …
A broken sprinkler lateral can hide for months — the system still runs, the lawn mostly looks fine, and the only evidence is a climbing water bill. Digging up the zone on a hunch is the expensive way to find it. There's a logical sequence, from free DIY steps to professional pinpointing, that finds the break with minimal excavation. Here's the whole process in order.
Run each zone manually and observe. The broken zone announces itself: weak pressure, heads that barely pop up, geysers from a cracked head or riser, or one area that's swampy while the rest is normal. Mark the zone number from your controller — everything downstream of this step depends on it.
With the suspect zone running, walk its coverage area slowly. Look for water bubbling up from the turf (a lateral break), misting or geysering heads (broken head or riser), and ground that's spongy underfoot. Flag each anomaly with a landscape flag or stick. Often you'll find the obvious breaks this way — heads damaged by mowers are the most common failure.
A zone that won't shut off, or one with water pooling in the valve box, points to a failed valve diaphragm — a cheap part that mimics a line break's symptoms. Dry valve box with zone symptoms means the break is downstream in the lateral.
If the zone misbehaves but no break is visible — the classic underground lateral crack — this is where professional detection takes over. The zone's lateral is isolated and pressure-tested to confirm the leak and narrow the segment; then acoustic listening along the pipe route pinpoints the break, which gets marked on the surface. Your landscaper digs one hole instead of trenching the zone. The whole professional visit typically takes a couple of hours.
Irrigation Leak Detection — learn more →
Isolate the zone by running each one manually, walk the suspect zone looking for bubbling water and soggy ground, check the valve box — and call for professional pressure testing and acoustic pinpointing when the break isn't visible.
Residential laterals are typically buried 6 to 12 inches deep — shallow enough that a marked surface location makes for a small, surgical excavation.
Camarillo sees only rare cold snaps, so full winterization is generally unnecessary — but insulating exposed backflow preventers and draining above-ground components before the coldest nights is cheap insurance.
Don't wait for the damage to announce itself. Call now — we're open 24/7 — or request an inspection online and we'll respond promptly.