O FALLON
PWSID: IL1631100 · O'fallon, IL · Serves 46,603 people
According to EPA Safe Drinking Water Information System (SDWIS), O FALLON (PWSID IL1631100) in O'fallon, IL is listed as a CWS water system covering about 46,603 people. The same extract lists 2 health-based violation records spanning 1993-1993. Those 2 health-based rows for O FALLON cover contaminants such as Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
O FALLON has 2 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. 1 distinct EPA contaminant code appears in this system's record, including Lead and Copper Rule. Recorded violations span 1993–1993. 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)
- IL1631100
- System Type
- CWS
- Water Source
- Surface Water
- Location
- O'fallon, IL
- Population Served
- 46,603
- Health Violations
- Yes (2)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Lead and Copper Rule | 2 | 2 |
Violation History (2)
| Contaminant | Health | Date |
|---|---|---|
| Lead and Copper Rule | Yes | Sep 1, 1993 |
| Lead and Copper Rule | Yes | Feb 4, 1993 |
Frequently Asked Questions
What does EPA SDWIS list for O FALLON?
How many people does O FALLON serve?
What violations does O FALLON have?
What contaminants have been found in O FALLON water?
Compare beyond Illinois
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest O FALLON on cumulative violation count (2) and EPA-reported population served (46,603). Violation-count peers include SAINT REGIS MOHAWK TRIBE, REDBY/RED LAKE, Kickapoo Traditional Tribe. Population peers include PRATTVILLE, THE WW BOARD OF THE CITY OF, ROCKETT SUD, CITY OF CAMDEN.
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
Explore More
About This Data
O FALLON (IL1631100) is drawn from EPA SDWIS. Nearby county systems in this extract include CASEYVILLE; CAHOKIA HEIGHTS; MASCOUTAH; AMERICAN WATER OPER AND MAINTENANCE, LLC. Health-based rows (2 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.