Erwin has some of the oldest homes in Harnett County, and leaks in decades-old supply pipe are a common cause of rising water use and damp crawl spaces. A plumber can test the lines and find the leak before floors or walls are opened. Call the number on this page to be connected with a local plumber in Erwin.

Erwin's older homes and who runs the water
Erwin grew up around the Erwin Cotton Mill, and a lot of its housing dates from those years. About 24% of homes were built in 1939 or earlier, roughly two-thirds before 1980, and the median house dates to 1966. That's a lot of galvanized steel, old copper and original valves still in service, much of it running through crawl spaces.
Erwin has no town water department. Harnett County bought the town's water and sewer systems in 2006, so service, billing and problems on the public side go to Harnett Regional Water (910-893-7575). Its water is chloraminated, averaging 2.64 ppm in 2024, which can wear down rubber parts in toilets and faucets.
What to do now
- Stop active damage. If water is spreading, close the main shutoff. In older Erwin homes, test that valve before an emergency, since many are stiff or don't seal.
- Read the meter. With every fixture off, watch it for 20 to 30 minutes. Movement means water is escaping.
- Check the toilets. A few drops of food coloring in each tank will show a leaking flapper within 15 minutes.
- Look under the house. If it's safe, check the crawl space for wet soil, drips or damp insulation.
- Report public-side leaks. Water surfacing at the meter or in the street goes to Harnett Regional Water.
Symptoms and likely causes
| Symptom | Likely cause |
|---|---|
| Meter moves, nothing visible | Toilet flapper, crawl space pipe, or buried service line |
| Rusty water from one faucet | Corroding galvanized pipe on that branch |
| Musty smell, soft floor | Slow leak under a bathroom or kitchen |
| Wet strip in the yard | Leak in the line from the meter to the house |
| Weak pressure everywhere | Service line leak or pipe narrowed by rust |
What affects the cost
- How hidden the leak is and how easy the crawl space is to work in
- Pipe condition, since brittle galvanized may need a section replaced instead of patched
- Valves that need replacing before the repair can be done
- Whether you choose to fix it on the same visit
Plumbing inspections for Erwin are done by Harnett County, with a town zoning permit required first for permitted work.
Leak Detection questions in Erwin
Do older homes have more hidden leaks?
Who is responsible for a leak between the meter and the house?
Should I turn off the water while I wait for the plumber?
How can I tell if a leak is under the house?
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