Lead pipes in St. Clair County, Illinois
How many lead pipes are in St. Clair County, IL?
Water systems based in St. Clair County reported 751 lead service lines, 408 galvanized lines that need replacing and 36,311 lines of unknown material to EPA (Q3 2026). East St. Louis (Illinois American Water) has the most, with 1,100 lead and galvanized lines.
Free replacement program confirmed
Who pays in Illinois
Illinois was one of the first states to require full replacement of every lead service line. Each water supply must file a final replacement plan by April 15, 2027, then replace a set share of its lead lines every year, on a timeline of 15 to 50 years depending on how many it has. A utility may bill the owner for the private side only if it is not using state or federal money for that work, and an owner can sign a waiver to decline private-side replacement. Illinois EPA lends to water systems and forgives part of the loan in lower-income communities, which is why many Illinois programs are free.
Confirmed programs in St. Clair County
- East St. Louis (Illinois American Water): Company replaces; no customer charge reported.
Every St. Clair County water system with lead lines
Systems are grouped by the county EPA lists as their main service area. Some serve towns in neighboring counties too.
| Water system | Lead | Galv. | Unknown | Program |
|---|---|---|---|---|
| East St. Louis (Illinois American Water) IL American-East St Louis | 749 | 351 | 34,431 | Free, utility schedules |
| O Fallon O Fallon | 0 | 33 | 457 | Not confirmed |
| Freeburg Freeburg | 0 | 21 | 0 | Not confirmed |
| Mascoutah Mascoutah | 2 | 3 | 0 | Not confirmed |
| Lebanon Lebanon | 0 | 0 | 1,423 | Not confirmed |
Systems over the new 10 ppb lead action level
Lebanon (12.2 ppb, 2025-01 to 2025-12). See all systems over 10 ppb.
Common questions
How many lead pipes are in St. Clair County, IL?
Water systems based in St. Clair County reported 751 lead service lines, 408 galvanized lines that need replacing and 36,311 lines of unknown material to EPA (Q3 2026). East St. Louis (Illinois American Water) has the most, with 1,100 lead and galvanized lines.
Who pays to replace lead service lines in St. Clair County?
It depends on your water utility. Illinois was one of the first states to require full replacement of every lead service line. We have confirmed programs for 1 St. Clair County utility, listed on this page.
How do I find out if my house has a lead service line?
Look up your address on your water utility's service line inventory map, or check the pipe where it enters your home: lead is dull gray, soft, scratches to shiny silver, and a magnet won't stick. See our step-by-step guide.
Other Illinois counties
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