Water damage help in Nampa, Idaho
Water spraying or flooding right now?
- Close the main water valve. Look where the water line enters the house: garage wall, utility room, beside the water heater, or inside the crawl space access in many older Nampa homes.
- Can't close it, or the leak is outside at the meter? Call Nampa Waterworks: (208) 468-5860.
- Turn off the water heater (gas to "pilot", electric at the breaker).
- Keep out of water near outlets; cut power to wet areas from a dry spot.
- Photograph everything, including the crawl space if you can safely look in.
- Start drying within 24–48 hours, the U.S. EPA's window to help prevent mold.
Our 24/7 local pro line for Nampa is opening soon. Until then: stop the water using the steps on this page, then contact a licensed water damage restoration company in your area. Check that they are licensed and insured before work begins.
Nampa homes: what to watch for
Nampa is the largest city in Canyon County and Idaho's third-largest, with 100,200 residents at the 2020 Census. The regional planning agency COMPASS estimated the city added more than 19,000 people between 2020 and 2024, second only to Meridian in the two-county area. That gives Nampa a mix of older homes near downtown and established neighborhoods and new subdivisions on the edges, and the two age groups have different weak spots.
Older homes
- Crawl spaces: pipes under the floor are exposed to cold air; a split pipe can run for days before anyone notices. Signs: a musty smell, higher water bill, a soft or cold floor.
- Galvanized steel supply pipes in some older houses corrode from the inside and can leak at joints. Rust-colored water or low pressure are warning signs.
- Less pipe insulation in exterior walls and under sinks on outside walls.
Newer homes
- Supply hoses to washing machines, toilets and ice makers, and water heaters in closets next to finished rooms.
- Builder warranty: report plumbing defects to the builder in writing early.
Flooded crawl space: what to do
- Stop the source at the main valve.
- Do not crawl in if there is standing water near wiring, a furnace or a well pump. Cut power to that circuit first.
- Pump out standing water with a submersible pump or wet-vac.
- Pull down wet insulation from between the floor joists; it holds water against the wood.
- Dry mechanically with dehumidifiers and air movers. A crawl space rarely dries well on its own in winter.
- Check the vapor barrier and replace it if water got on top of it.
Winter freeze facts
Average overnight lows at the Boise airport weather station, east of Nampa, are below freezing in December and January (November 32.3°F, December 24.5°F, January 24.9°F, February 29.3°F; 1991–2020 NOAA Climate Normals). Pipes in crawl spaces, garages and exterior walls are the ones that freeze. Keep the heat at 55°F or higher, let faucets on outside walls drip on very cold nights, and disconnect garden hoses before the first freeze. Full guide: burst and frozen pipes.
Step-by-step guides
- Water heater leaking
- Water coming through the ceiling
- Sewage backup
- Mold after water damage
- Filing a water damage insurance claim in Idaho
- What water damage restoration costs
Quick answers
Who do I call for a water emergency in Nampa?
City of Nampa Waterworks lists a 24-hour line for water issues: (208) 468-5860. Call it for a leak at the street, in the meter box or before your main shutoff valve. Leaks inside the house after your valve are the homeowner's to repair.
My Nampa home has a crawl space. What should I check after a leak?
Look for standing water, wet insulation hanging from the floor above, and damp soil or vapor barrier. Water in a crawl space dries slowly on its own and can lead to mold and wood damage, so it usually needs pumping and mechanical drying.
Is my older Nampa house more at risk of frozen pipes?
Often, yes. Older homes tend to have less insulation around pipes in crawl spaces and exterior walls, and some have galvanized steel pipes that corrode from the inside. Insulating exposed pipes and keeping the heat at 55°F or higher are the cheapest protection.
How much does water damage repair cost in Nampa?
National cost surveys put most jobs between roughly $1,300 and $6,300, with sewage and crawl-space jobs at the higher end. See our cost guide for a line-by-line example.