Is CRYSTAL LAKE required to publish a Consumer Confidence Report?

Yes. CRYSTAL LAKE is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is CRYSTAL LAKE’s next Consumer Confidence Report due?

CRYSTAL LAKE’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

CRYSTAL LAKE, IL · McHenry County

CRYSTAL LAKE Water System

Consumer Confidence Report status

CRYSTAL LAKE must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for CRYSTAL LAKE.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)

CRYSTAL LAKE is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 40,661 people from groundwater.

As of August 1, 2026, its federal record holds 15 entries between 1977 and 2026, all of which EPA lists as closed.

Of the 15, 13 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, the Total Coliform Rules, and inorganic chemicals.

Violation history

Monitoring, Regular
—
Methoxychlor
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Endrin
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Atrazine
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Simazine
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
LASSO
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
BHC-GAMMA
January 1, 2026 – March 31, 2026
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1996 – July 31, 1996
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 1996 – July 31, 1996
Archived
Maximum Contaminant Level Violation, Average
Health-based
Barium
June 1, 1983 – May 31, 1986
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
January 1, 2026 – March 31, 2026	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Endrin	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Heptachlor epoxide	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Atrazine	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Simazine	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	LASSO	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	BHC-GAMMA	—	Archived
July 1, 1996 – July 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1996 – July 31, 1996	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
June 1, 1983 – May 31, 1986	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

Common questions

Is CRYSTAL LAKE required to publish a Consumer Confidence Report?: Yes. CRYSTAL LAKE is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CRYSTAL LAKE’s next Consumer Confidence Report due?: CRYSTAL LAKE’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CRYSTAL LAKE have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for CRYSTAL LAKE.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

MAGNUSON, MICHAEL P.

815-356-3611

CRYSTAL LAKE, IL 60014