Lead Pipe Map

Illinois · population 5,611

Lead pipes in Du Quoin, IL

1,228 lead or galvanized lines to replace

Most of Du Quoin (population 5,611) gets its water from Duquoin. That system reported 1,228 lead and 0 galvanized-requiring-replacement service lines out of 3,597, with 1,125 more of unknown material.

34% of Duquoin's service lines are lead or galvanized requiring replacement, higher than the Illinois average (17%) and higher than the national average (3.1%).

1,228Lead
0Galvanized, replace
1,125Unknown material
1,244Non-lead

Latest lead test for Duquoin (Jan 2026–Jun 2026): 0.5 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.

Compliance record: EPA lists 2 Lead and Copper Rule violations since 2015, 1 still open for Duquoin.

Water systems serving Du Quoin

Water systemLeadGalv.Unknown% lead
DuquoinMain system1,22801,12534%
DowellServes 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 Du Quoin

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

Find the official inventory mapDuquoin 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 Du Quoin, IL have lead pipes?

Yes. Duquoin, which serves Du Quoin, reported 1,228 lead and 0 galvanized-requiring-replacement service lines, plus 1,125 of unknown material.

Who supplies water to Du Quoin?

EPA's service area maps place most of Du Quoin in Duquoin's service area (PWSID IL1450100). Dowell also serves parts of the city or nearby areas.

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

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