CRYSTAL LAKE, IL · McHenry County

CRYSTAL LAKE Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.

System facts

System ID (PWSID): IL1110150
System type: Community Water System
Population served: 40,661
Service connections: 14,101
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1996 – July 31, 1996
Archived
Maximum Contaminant Level Violation, Average
Health-based
Barium
June 1, 1983 – May 31, 1986
Archived
Maximum Contaminant Level Violation, Average
Health-based
Barium
June 1, 1980 – May 31, 1983
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 1996 – July 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
June 1, 1983 – May 31, 1986	Maximum Contaminant Level Violation, Average	Barium	Health-based	Archived
June 1, 1980 – May 31, 1983	Maximum Contaminant Level Violation, Average	Barium	Health-based	Archived
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

June 9, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
August 16, 2024State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 11, 2024State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 11, 2024State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 16, 1996State Public Notification received2 linked violations
September 29, 1996State Violation/Reminder Notice2 linked violations
September 29, 1996State Public Notification requested2 linked violations
September 29, 1987State Compliance achieved1 linked violation

Contact

MAGNUSON, MICHAEL P.

815-356-3611

CRYSTAL LAKE, IL 60014