Nashua, NH · Southern New Hampshire
Water Leak Detection in Nashua, NH
A hidden leak can run for months behind a wall or under a slab before it shows itself. Expedition Plumbing uses modern leak-detection equipment to pinpoint the source with as little demolition as possible, then repairs it — from Nashua and Hudson to Londonderry and Manchester.
24-hour availabilitySame-day & next-day scheduling 5.0 on Google

Family-owned and operated
You deal directly with the family that runs the company.
Licensed and insured
Every job is performed by licensed, insured plumbers.
Fast local response
Based in Nashua and dispatching across Southern New Hampshire.
What's included
Hidden leak location
Behind walls, under floors, in ceilings and beneath slabs.
Supply line leaks
Pressurized lines that leak continuously and drive up water bills.
Fixture and appliance leaks
Tracing water back to the fixture, valve or connection that is failing.
Water meter and pressure checks
Confirming whether water is moving when nothing is running.
Leak repair
Once located, we repair the failure and restore the line.
Signs it's time to call
- Your water bill jumped without a change in household use
- You hear water running when every fixture is off
- Warm or damp spots appear on a floor
- Stains, bubbling paint or soft drywall on a wall or ceiling
- A musty smell in a room, closet or basement
- The water meter dial moves with all fixtures closed
Modern diagnostics, minimal demolition
Guesswork means opening walls until water turns up. We locate first so the repair opening is small and deliberate.
You will know what we found and where before we cut anything.
Why hidden leaks matter in New Hampshire homes
Slow leaks in unheated crawl spaces and exterior walls tend to worsen through winter, and moisture in framing invites mold. Finding one early is far cheaper than repairing what it damaged.
Water Leak Detection FAQs
- Can you find a leak without tearing out walls?
- In most cases, yes. Detection equipment narrows the location so any opening we make is small and targeted.
- Do you repair the leak too?
- Yes. We locate and repair, so you are not coordinating two contractors.
Related services
Further reading
Book water leak detection in Nashua, NH
Call (603) 943-4342 for 24-hour help, or request service and we'll confirm same-day or next-day scheduling.
Rated 5.0 on Google · Family-owned · Licensed & insured
