LEMONT
PWSID: IL0311620 · Lemont, IL · Serves 17,500 people
According to EPA Safe Drinking Water Information System (SDWIS), LEMONT (PWSID IL0311620) in Lemont, IL is listed as a CWS water system covering about 17,500 people. The same extract lists 11 health-based violation records spanning 2015-2025. Those 11 health-based rows for LEMONT cover contaminants such as Combined Radium (-226 and -228), Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
LEMONT has 11 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 2 distinct EPA contaminant codes appear in this system's record, including Combined Radium (-226 and -228), Lead and Copper Rule. Recorded violations span 2015–2025. Day-to-day primacy enforcement for this system runs through the Illinois drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Illinois state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- IL0311620
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Lemont, IL
- Population Served
- 17,500
- Health Violations
- Yes (11)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Combined Radium (-226 and -228) | 10 | 10 |
| Lead and Copper Rule | 1 | 1 |
Violation History (11)
| Contaminant | Health | Date |
|---|---|---|
| Lead and Copper Rule | Yes | Aug 31, 2025 |
| Combined Radium (-226 and -228) | Yes | Oct 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Oct 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Apr 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Apr 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Jan 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Jan 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Jan 1, 2015 |
| Combined Radium (-226 and -228) | Yes | Jan 1, 2015 |
Frequently Asked Questions
What does EPA SDWIS list for LEMONT?
How many people does LEMONT serve?
What violations does LEMONT have?
What contaminants have been found in LEMONT water?
Compare beyond Illinois
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest LEMONT on cumulative violation count (11) and EPA-reported population served (17,500). Violation-count peers include MICCOSUKEE TRIBE OF INDIANS, Arizona Village, WHITE SWAN. Population peers include VAIL WATER COMPANY, SOUTH OGDEN CITY WATER SYSTEM, KAUKAUNA UTILITIES.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
LEMONT (IL0311620) is drawn from EPA SDWIS. Nearby county systems in this extract include CHICAGO; ELGIN; CICERO; AQUA ILLINOIS-KANKAKEE. Health-based rows (11 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.