How Do I Know If I Have a Sprinkler Leak Underground?

You likely have an underground sprinkler leak if you notice soggy spots when the system isn't running, a sudden spike in your water bill ($30-$100+), low pressure at specific heads, or hissing sounds from the ground. The most common cause in Utah is freezing damage from improper winterization.

7 Signs of an Underground Leak

Soggy spots when off: Most definitive sign. Water is escaping from a pipe and saturating the soil.

Low pressure at specific heads: Water is escaping before reaching the heads.

Water bill spike: 30-50% increase without adding coverage likely means a leak. Check your water meter with all indoor water off.

Hissing/gurgling sounds: Hissing indicates air escaping from a crack. Gurgling means water pooling underground.

Uneven grass growth: Dark green fast-growing grass in one area is getting extra water from a leak.

Sunken areas: Leaking water washes soil away, causing depressions.

Common Causes in Utah

Freeze damage: Most common. Water left in pipes freezes and cracks PVC. Proper winterization with compressed air is essential.

Root intrusion: Willow, poplar, and silver maple roots grow into pipe joints.

Pipe degradation: PVC becomes brittle after 10-15 years in Utah's freeze-thaw.

For professional irrigation repair, contact TruCo Services.

Frequently Asked Questions

Will an underground sprinkler leak fix itself?
No. Leaks never self-repair and get worse. Small leaks become large breaks within weeks.

How much water does a leak waste?
A pinhole leak at 60 PSI can waste 6,000-10,000 gallons per month, adding $50-$150 to your bill.

Can tree roots cause sprinkler leaks?
Yes. Willow, poplar, cottonwood, and silver maple roots seek water and grow into pipe joints.

How much does leak repair cost in Utah?
$150-$400 for simple pipe repair. $500-$1,500 if under hardscape.