Leak Detection in Exeter, NH
Leak detection in Exeter, NH works best when you first know whether your property is on town water or a private well. This page uses the Town of Exeter’s own service-line rules to explain where your responsibility starts and what to check before you call.
Call (844) 442-1700 — give your Exeter address, and coverage for it is confirmed on the call.
Water Leak Detection and Repair in Exeter
Portsmouth Leaktrace connects Exeter callers with an independent local plumbing provider for leak detection and repair. The provider confirms whether it serves your address and what it can do.
Exeter’s public water is run by the town, through the Exeter Water Department and Public Works. Its rules differ from Portsmouth’s, so this page treats Exeter on its own terms.
For other Seacoast towns, see the service areas overview.
Common Water Loss Questions for Exeter Properties
Most Exeter leak questions start with one of a few situations. Matching yours to the right source saves time.
| Exeter scenario | Source to check | Next step |
|---|---|---|
| Water bill rose with no visible leak | Your recent Exeter water bills | Meter check with all fixtures off |
| Damp ground between the street and house | Town rules on the curb-stop boundary | Note location, then call for line detection |
| Water near the street or curb | Exeter Water Department | Report it to the town first |
| No water bill, but pressure is dropping | Your well pump and pressure tank | Ask about well line investigation |
| Service-line notice in the mail | Exeter’s Lead Service Line Inventory page | Follow the town’s instructions |
| Stain on a ceiling or wall | The plumbing above or behind it | Hidden indoor leak detection |
Signs of a Buried Service-Line Problem
A buried line leak often shows up in the yard or at the foundation. On town water, the customer’s section runs from the curb stop toward the meter.
Clues include:
- A soft or unusually green strip across the lawn.
- Water seeping where the line enters the building.
- Lower pressure at every fixture at once.
- A wet spot that stays in dry weather.
These clues can also come from drainage or groundwater. Note when the wet area appears and whether it follows rain.
What Water Bills Can and Cannot Reveal
A water bill shows how much water passed through the meter. It cannot show where the water went.
A higher bill can come from a running toilet, a seasonal habit, a rate change or a leak. Compare usage, not just the dollar total.
A bill also cannot show water lost before the meter. If a leak sits on the line before the meter, the bill may look normal.
Checking a Meter Without Guesswork
A careful meter check gives you a reliable starting point. Done properly, it separates continuous use from occasional use.
Turn off every faucet, appliance and irrigation zone.
Make sure no toilet is refilling.
Note the meter reading or leak indicator.
Wait at least an hour without using any water.
Read the meter again and compare.
Movement suggests continuous flow somewhere past the meter. No movement does not rule out a leak before the meter. The water meter leak test guide explains the limits in detail.
Where Exeter Water Responsibility Must Be Verified
Exeter divides service-line ownership at the curb stop. The town says it “owns the section of the service line from the main to the home’s curb stop”.
The customer side runs from the curb stop to the meter. The town says that section “is owned by the customer”.
Source: Town of Exeter — Lead Service Line Inventory, reviewed October 2026.
This is Exeter’s rule, not a regional standard. Portsmouth uses a different description, explained in the guide to Portsmouth service line responsibility. Confirm details for your address with the town before any digging.
Historic Building Context Without Assumptions
Exeter has older buildings alongside newer ones, but age alone does not tell you what pipes are inside. Many older buildings have been replumbed at least once.
What building age can suggest:
- Pipe routes may have changed over several renovations.
- Original and newer materials may be joined together.
- Access may be limited by plaster, paneling or built-ins.
- Records of past plumbing work may be incomplete.
None of these confirms a leak. They simply affect how a professional plans the search.
Foundations and Non-Plumbing Water Entry
Water in an Exeter basement may come from outside, not from a pipe. Rain, snowmelt and high groundwater can all enter through foundations.
Timing is the strongest clue. Water that follows storms points toward outside entry. Water that appears in dry weather points toward plumbing.
Condensation on cold pipes can also wet a floor in humid months. The guide on pipe leaks versus groundwater covers how to tell them apart.
Winter Pipe Exposure in Different Property Types
Winter exposure depends on where pipes run, not just how cold it gets. Pipes in exterior walls, garages, porches and crawl spaces face the most risk.
Different properties face different risks:
- Older homes may have pipes in poorly insulated outside walls.
- Additions may have plumbing in spaces with less heat.
- Vacant or seasonal properties may lose heat without anyone noticing.
- Outdoor faucets can freeze if not shut off for winter.
For prevention steps, see the guide to preventing frozen pipes.
When a Well System Changes the Investigation
Some Exeter properties may use a private well instead of town water. If you receive no town water bill, a well is likely.
Well properties need different checks. There is no utility meter to test, so clues come from the pump, pressure tank and pressure changes.
A pump that cycles often with no water running can suggest a leak, or an equipment problem. Read about well water line leak detection for the differences.
Safe Steps Before Scheduling
A few safe steps protect the property while you arrange help. None of them requires opening walls or digging.
- Find the main shutoff inside the building and test that you can reach it.
- Shut it off if water is actively escaping.
- Keep people away from wet areas near electrical outlets or panels.
- Move valuables away from damp spots.
- Do not operate the town’s curb stop.
Call (844) 442-1700 — once the area is safe, ask the provider about detection or repair.
Detection Versus Pipe Repair
Detection finds the leak, and repair fixes it. They are separate jobs, often with separate quotes.
Choose detection when damage appears with no visible source. Choose repair when the leak is visible or already located.
For a buried line already located on your side of the curb stop, see underground water line repair.
Comparing Likely Leak Sources
Exeter callers often weigh three possibilities: a pipe leak, water from outside or a billing issue. Each points to a different next step.
| Factor | Pipe loss | Exterior water | Billing issue |
|---|---|---|---|
| Typical sign | Meter moves with all fixtures off | Water after storms or snowmelt | Higher bill with normal meter behavior |
| Timing | Constant or tied to water use | Tied to weather | Tied to billing period or rates |
| Useful check | Meter test overnight | Note rain dates against wet dates | Compare usage and rates on bills |
| Who helps | Plumbing provider | Drainage or waterproofing specialist | Exeter Water Department |
| Common mistake | Assuming a still meter means no leak | Assuming any wet basement is a pipe | Assuming a higher bill proves a leak |
What Documentation Helps a Technician
Good records shorten the search and reduce guesswork. They are also useful for insurance.
Gather these before you call:
- Several recent water bills showing usage.
- Meter readings taken before and after an hour with no water use.
- Dated photos of each damp or stained area.
- Notes on weather when the problem appeared.
- Any service-line notice the town has sent you.
Access and Repair Scope Questions
Access often decides how large a repair becomes. A leak in an open basement is simpler than one behind plaster or under a driveway.
Ask the provider:
What access will the repair likely need?
Will you explain the leak location before opening anything?
Is restoration of walls, floors or landscaping included?
Will the town need to be involved for any part of the line?
Understanding Service Hours and Coverage
Service hours and coverage are set by the provider. Round-the-clock help and specific arrival times are not promised.
When you call, the provider confirms whether it serves your Exeter address and when it can realistically come out.
If water is escaping, shut it off first. That buys time to arrange a scheduled visit.
Source-Checked Exeter Local Information
Everything Exeter-specific on this page comes from the Town of Exeter. We do not add housing or leak statistics without a reliable source.
What the town publishes:
- The town owns the line from the main to the curb stop.
- The customer owns the line from the curb stop to the meter.
- Lines of undetermined material are listed as “Lead Status Unknown”.
- Residents can submit their line material through an online form with a photo.
- Inventory questions can be directed to the Town of Exeter at 603-773-6157.
Source: Town of Exeter — Lead Service Line Inventory, reviewed October 2026.
When to Contact a Utility Rather Than Plumber
Contact the town first when the problem may be on the public side of the curb stop. That includes water in the street, at the curb or near the main.
Also contact the town about billing questions, service-line notices or meter problems. Those are utility matters.
Call a plumber when the leak appears to be inside the building or on your side of the curb stop. If you are unsure, the town can often help clarify.
Relevant Seacoast Service Pages
These pages cover services that Exeter callers often need. Each explains the work in more detail.
- Hidden water leak detection for walls, ceilings and floors.
- Underground water line leak detection for buried supply lines.
- Underground water line repair for a located private line leak.
- Water leak repair for confirmed supply leaks.
- Seacoast service areas for nearby towns.
Protecting Rooms From Ongoing Water Damage
Limiting damage while you wait is often as important as the repair. Water keeps spreading until the flow stops and the area dries.
Practical steps:
- Shut off the supply to the leaking fixture or the whole building.
- Place towels or a bucket under active drips.
- Move rugs, furniture and electronics out of the wet area.
- Photograph damage before cleanup for your records.
- Ask whether a drying specialist is needed after the repair.
Call (844) 442-1700 — ask the provider about locating or repairing the leak in your Exeter property.
Frequently Asked Exeter Leak Questions
Who owns the water service line in Exeter?
The town says it owns the section from the main to the curb stop. The customer owns the section from the curb stop to the meter.
Are Portsmouth’s service line rules the same as Exeter’s?
No. Each water provider sets its own rules, so Exeter callers should rely on the Town of Exeter’s guidance.
What does “Lead Status Unknown” mean in Exeter?
It is the town’s label for lines whose material has not been determined. It does not mean the line is leaking.
How do I know if my Exeter property is on a well?
If you receive no town water bill, you likely have a private well. Look for a well pump control and pressure tank.
Who should I call about water at the curb?
Contact the Exeter Water Department first. Water near the curb or street may be on the town’s side of the line.
Can a meter test find every leak?
No. It shows use past the meter, but a leak before the meter may not register.
Is my Exeter address covered?
Coverage is confirmed address by address when you call. The provider tells you directly whether it can help.