Water Leak in the Yard at a Coto de Caza Estate: Soggy Lawn, Long Service Lines and How to Find the Source
Large Coto de Caza lots often have long runs between the meter and the house. How to tell a supply leak from irrigation, test the meter and decide whether to repair…
A patch of lawn that stays green in a dry month, a soft spot on the driveway edge or a trickle running down a slope can all point to a leak somewhere underground. On large Coto de Caza properties, the distance between the meter and the house is often much longer than in a typical tract, so a leak can run for weeks before anyone notices.
Supply line or irrigation?
Most yard leaks fall into one of two groups:
- Irrigation leaks happen on the landscape side, often at a cracked lateral, a broken sprinkler head or a stuck valve. They usually show up only when the controller runs.
- Service line leaks are on the pressurized pipe that feeds the house. They run all the time, day and night, whether or not anything inside is on.
Turn the irrigation controller off for a day. If the wet area keeps spreading, the supply line becomes the main suspect.
The meter test
With every fixture, ice maker and irrigation zone off, look at the low-flow indicator on your Santa Margarita Water District meter. If it is still turning, water is moving somewhere. Close the main shutoff at the house and check again. If the meter still moves with the house closed off, the leak is between the meter and the shutoff, which is the section in the yard.
Why Coto lots are prone to it
Many homes in Coto de Caza were built from the late 1970s through the early 2000s on generous lots in gated villages and equestrian areas. Service lines may run a long way under lawns, hardscape and slopes, sometimes through rocky soil or tree roots. Older copper or early plastic lines can wear at joints, and shifting soil on hillsides adds stress.
Finding the exact spot
Professional leak detection uses acoustic listening equipment and sometimes tracer gas to pinpoint the leak before digging. That keeps the excavation small, which matters when the line runs under pavers, mature trees or a pool deck.
Repair or replace?
A single leak on an otherwise healthy line can often be repaired. When the line is old, has leaked before or runs under landscaping that would be costly to disturb more than once, replacing the full run with new pipe, sometimes on a new path, is the more lasting choice. Coto de Caza is unincorporated, so this work goes through OC Public Works permits, and many villages also want notice through the HOA before crews arrive.
Related reading
Read our guide to a water leak in a wall or learn how leak detection in Orange County works. Neighbors can visit Rancho Santa Margarita, Trabuco Canyon and Ladera Ranch, or see every city we serve at repipeinc.com.
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Written by Repipe OC · CSLB #1087885 C-36 · 23821 Hillhurst Drive, Laguna Niguel, CA 92677 · (949) 524-2362