Lead Pipe Map

Illinois · population 5,629

Lead pipes in Wilmington, IL

13 lead or galvanized lines to replace

Most of Wilmington (population 5,629) gets its water from Wilmington. That system reported 13 lead and 0 galvanized-requiring-replacement service lines out of 2,451, with 1,887 more of unknown material.

0.5% of Wilmington's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and lower than the national average (3.1%).

13Lead
0Galvanized, replace
1,887Unknown material
551Non-lead

Latest lead test for Wilmington (Jul 2025–Dec 2025): 2.3 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.

Compliance record: EPA lists 1 Lead and Copper Rule violation since 2015 for Wilmington.

Water systems serving Wilmington

Water systemLeadGalv.Unknown% lead
WilmingtonMain system1301,8870.5%
BraidwoodServes nearby areas001,1590%

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 Wilmington

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

Find the official inventory mapWilmington 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 Wilmington, IL have lead pipes?

Yes. Wilmington, which serves Wilmington, reported 13 lead and 0 galvanized-requiring-replacement service lines, plus 1,887 of unknown material.

Who supplies water to Wilmington?

EPA's service area maps place most of Wilmington in Wilmington's service area (PWSID IL1971100). Braidwood also serves parts of the city or nearby areas.

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

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