MCHENRY
PWSID: IL1110600 · Mchenry, IL · Serves 22,335 people
According to EPA Safe Drinking Water Information System (SDWIS), MCHENRY (PWSID IL1110600) in Mchenry, IL is listed as a CWS water system covering about 22,335 people. The same extract lists 1 health-based violation record spanning 1992-1992. Those 1 health-based row for MCHENRY cover contaminants such as Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
MCHENRY has 1 health-based violation record 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 1992–1992. 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)
- IL1110600
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Mchenry, IL
- Population Served
- 22,335
- Health Violations
- Yes (1)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Lead and Copper Rule | 1 | 1 |
Violation History (1)
| Contaminant | Health | Date |
|---|---|---|
| Lead and Copper Rule | Yes | Apr 2, 1992 |
Frequently Asked Questions
What does EPA SDWIS list for MCHENRY?
How many people does MCHENRY serve?
What violations does MCHENRY have?
What contaminants have been found in MCHENRY water?
Compare beyond Illinois
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MCHENRY on cumulative violation count (1) and EPA-reported population served (22,335). Violation-count peers include CHOCTAW - CONEHATTA, CHOCTAW - PEARL RIVER, CHOCTAW - TUCKER. Population peers include VEOLIA WATER WAKEFIELD RHODE ISLAND INC, CORALVILLE MUNI WATER SYSTEM, PA AMERICAN WATER CO-INDIANA D.
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
MCHENRY (IL1110600) is drawn from EPA SDWIS. Nearby county systems in this extract include CRYSTAL LAKE; ALGONQUIN; LAKE IN THE HILLS; HUNTLEY. Health-based rows (1 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.