Lead Pipe Map

Illinois · population 3,309

Lead pipes in Johnston, IL

51 lead or galvanized lines to replace

Most of Johnston (population 3,309) gets its water from Johnston City. That system reported 51 lead and 0 galvanized-requiring-replacement service lines out of 1,865, with 1,163 more of unknown material.

2.7% of Johnston City's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and about the same as the national average (3.1%).

51Lead
0Galvanized, replace
1,163Unknown material
651Non-lead

Latest lead test for Johnston City (Jan 2026–Jun 2026): not detected 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 for Johnston City.

Water systems serving Johnston

Water systemLeadGalv.Unknown% lead
Johnston CityMain system5101,1632.7%
Highway 37 North PWDServes nearby areas004400%

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 Johnston

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

Find the official inventory mapJohnston City 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 Johnston, IL have lead pipes?

Yes. Johnston City, which serves Johnston, reported 51 lead and 0 galvanized-requiring-replacement service lines, plus 1,163 of unknown material.

Who supplies water to Johnston?

EPA's service area maps place most of Johnston in Johnston City's service area (PWSID IL1990500). Highway 37 North PWD also serves parts of the city or nearby areas.

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

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