Lead Pipe Map

Idaho · population 34,693

Lead pipes in Lewiston, ID

4,769 lines still unidentified

Most of Lewiston (population 34,693) gets its water from City of Lewiston. It reported no confirmed lead service lines, but 4,769 of 5,963 lines are still listed as unknown material, so lead hasn't been ruled out.

0% of City of Lewiston'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
4,769Unknown material
1,194Non-lead

Latest lead test for City of Lewiston (2026): not detected 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 Lewiston.

Water systems serving Lewiston

Water systemLeadGalv.Unknown% lead
City of LewistonMain system004,7690%
Lewiston Orchards Irrigation DistServes nearby areas0000%

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 Lewiston

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

Find the official inventory mapCity of Lewiston 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 Lewiston, ID have lead pipes?

None are confirmed, but City of Lewiston still lists 4,769 service lines as unknown material.

Who supplies water to Lewiston?

EPA's service area maps place most of Lewiston in City of Lewiston's service area (PWSID ID2350014). Lewiston Orchards Irrigation Dist also serves parts of the city or nearby areas.

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

Search your address on City of Lewiston'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 Lewiston 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 Lewiston whether your street is scheduled and whether it covers the private side.