Illinois · population 9,118
Lead pipes in Mascoutah, IL
5 lead or galvanized lines to replace
Most of Mascoutah (population 9,118) gets its water from Mascoutah. That system reported 2 lead and 3 galvanized-requiring-replacement service lines out of 3,775, with 0 more of unknown material.
0.1% of Mascoutah's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and lower than the national average (3.1%).
- Lead <0.1%
- Galvanized (replace) <0.1%
- Unknown 0%
- Non-lead 100%
Latest lead test for Mascoutah (Jan 2026–Dec 2028): 4.9 ppb 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 Mascoutah.
Water systems serving Mascoutah
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| MascoutahMain system | 2 | 3 | 0 | 0.1% |
| IL American-East St LouisServes nearby areas | 749 | 351 | 34,431 | 1.5% |
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 Mascoutah
The counts above cover the whole water system. To see whether your line is lead, look up your address on Mascoutah's official inventory. Utilities had to make these public by October 16, 2024.
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.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Lebanon1,423 unknown
- Shiloh1,100 lead + galv. lines
- O'Fallon33 lead + galv. lines
- Trentonno lead reported
- Belleville1,100 lead + galv. lines
- Swansea1,100 lead + galv. lines
- Fairview Heights33 lead + galv. lines
- Smithtonno lead reported
Check another water system
Questions
Does Mascoutah, IL have lead pipes?
Yes. Mascoutah, which serves Mascoutah, reported 2 lead and 3 galvanized-requiring-replacement service lines, plus 0 of unknown material.
Who supplies water to Mascoutah?
EPA's service area maps place most of Mascoutah in Mascoutah's service area (PWSID IL1630800). IL American-East St Louis also serves parts of the city or nearby areas.
How do I check whether my Mascoutah home has a lead service line?
Search your address on Mascoutah'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 Mascoutah 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 Mascoutah whether your street is scheduled and whether it covers the private side.