Lead Pipe Map

Idaho · population 117,350

Lead pipes in Nampa, ID

9,492 lines still unidentified

Most of Nampa (population 117,350) gets its water from City of Nampa. It reported no confirmed lead service lines, but 9,492 of 38,360 lines are still listed as unknown material, so lead hasn't been ruled out.

0% of City of Nampa's service lines are lead or galvanized requiring replacement, lower than the Idaho average (0.5%) and lower than the national average (3.1%).

0Lead
0Galvanized, replace
9,492Unknown material
28,868Non-lead

Latest lead test for City of Nampa (Jan 2025–Dec 2027): 1 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.

Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for City of Nampa.

Water systems serving Nampa

Water systemLeadGalv.Unknown% lead
City of NampaMain system009,4920%
Valley View WaterAlso serves parts of the city00170%
Camelot Water Assn INCServes nearby areas028055%

Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.

Check your address in Nampa

The counts above cover the whole water system. To see whether your line is lead, look up your address on City of Nampa's official inventory. Utilities had to make these public by October 16, 2024.

Find the official inventory mapCity of Nampa details

No map yet? Do the 2-minute scratch and magnet test.

Protect your drinking water

If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.

Pitcher filtersCheapest start. Pick one certified to NSF/ANSI 53 for lead, such as Brita Elite, PUR Plus or ZeroWater.See pitchers Faucet-mount filtersFilters straight from the tap. Look for NSF/ANSI 53 lead reduction on the box.See faucet filters Under-sink systemsBest for families. Carbon block (NSF 53) or reverse osmosis (NSF 58) units rated for lead.See under-sink

Choosing a lead-certified filter · Testing your water · Replacement cost

Nearby cities

Check another water system

Questions

Does Nampa, ID have lead pipes?

None are confirmed, but City of Nampa still lists 9,492 service lines as unknown material.

Who supplies water to Nampa?

EPA's service area maps place most of Nampa in City of Nampa's service area (PWSID ID3140080). Valley View Water, Camelot Water Assn INC also serve parts of the city or nearby areas.

How do I check whether my Nampa home has a lead service line?

Search your address on City of Nampa's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.

When will lead pipes in Nampa be replaced?

EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask City of Nampa whether your street is scheduled and whether it covers the private side.