How Much Does Leak Detection Cost? (McAllen, TX - Updated September 2026)
Prices last updated: September 22, 2026
Quick answer
How much does leak detection cost in McAllen, TX?
All Valley Plumbing & A/C Co. in McAllen posts its leak detection prices online. Water and slab leak detection costs $400–$800, and main sewer line hydrostatic testing costs $575–$975. Once the leak is found, a small pipe leak repair is $275–$425 (prices updated September 22, 2026). Any extra work found on site is quoted in writing and approved by you before we start.
| Service | Price |
|---|---|
| Water & slab leak detection | Standard $460–$920Website Special $400–$800You save up to $120Calling? Just say 'Website Special.' |
| Hydrostatic testing – main sewer line | Standard $665–$1,125Website Special $575–$975You save up to $150Calling? Just say 'Website Special.' |
| Small pipe leak repair | Standard $320–$490Website Special $275–$425You save up to $65Calling? Just say 'Website Special.' |
Prices last updated: September 22, 2026
Website Special pricing applies when you book online or mention our website pricing when you call. Standard pricing applies otherwise.
How much does slab leak detection cost?
Slab leak detection is the same $400–$800 as water leak detection.
How much does hydrostatic testing cost?
Main sewer line hydrostatic testing is $575–$975. It checks whether the drain line under the house holds water.
Is the leak repair included in the detection price?
No. Detection finds the leak; the repair is priced separately. A small pipe leak repair is $275–$425, and you approve the price before work begins.
Do leak detection prices change by city?
No. The same posted prices apply in McAllen, Mission, Edinburg, Pharr and every city we serve in the Rio Grande Valley.
What's included in the price
- • Non-invasive testing of the water lines to confirm a leak.
- • Pinpointing the leak location before anything is opened.
- • A posted repair price for that leak before any work begins.
What's not included
- • The repair itself, which has its own posted price.
- • Opening walls, floors or concrete, or patching them afterward.
- • Extra work found on site — quoted in writing and approved before we start.
Same price in every city we serve
There is no different price list by town. These posted prices apply across the Rio Grande Valley.