Here is the honest part most repair shops bury: finding the leak is the cheap step, and it is the one that keeps the expensive step small. These are typical Sacramento-area ranges for 2026. They are estimates to set expectations, not quotes. The independent pro you are matched with gives the firm number.
Leak detection visit (locate the leak)
The core service. A specialist pressure-tests, listens with acoustics, and dye-tests to pinpoint the source.
$250 to $500
Pressure test only (single line)
A focused test when the leak is already narrowed to one suspected line.
$100 to $200
Dive or dye inspection of the shell
In-water inspection of the shell, fittings, and light niches for a suspected structural leak.
$150 to $350
Simple pad repair (o-ring, union, valve)
Often the whole fix when the leak is at the equipment pad. Parts plus labor.
$100 to $300
Underground line or shell repair
Excavation or shell work when the leak is buried or structural. Varies widely by access and severity.
$1,000 to $4,000+
Why finding it first saves money
A running leak does not just waste water. It wastes the chemicals and the gas or electricity you spend re-treating and re-heating that water every week. A detection visit that pinpoints the exact spot almost always costs less than months of that waste, and it keeps any repair targeted to one small area instead of a hopeful dig across the whole deck.
Estimates only, for general guidance. Not a quote or an offer. Final pricing comes from the independent specialist you are matched with. Down a Quart does not perform detection and does not set prices.