Is DIAMOND LAKE MHP required to publish a Consumer Confidence Report?

Yes. DIAMOND LAKE MHP 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 DIAMOND LAKE MHP’s next Consumer Confidence Report due?

DIAMOND LAKE MHP’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.

MUNDELEIN, IL · Lake County

DIAMOND LAKE MHP Water System

Consumer Confidence Report status

DIAMOND LAKE MHP 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 DIAMOND LAKE MHP.

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): IL0975185
System type: Community Water System
Population served: 198
Service connections: 60
Ownership: privately owned
Water source: groundwater (wells)

DIAMOND LAKE MHP is one of 1,572 community water systems in Illinois in the 500 or fewer people size category, serving 198 people from groundwater.

As of August 1, 2026, its federal record holds 8 entries between 1994 and 2025, all of which EPA lists as closed.

Of the 8, 6 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 the Total Coliform Rules and inorganic chemicals.

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
July 1, 2025 – July 31, 2025
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2024 – October 31, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2024 – August 31, 2024
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2010 – February 28, 2010
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
October 1, 2003 – October 31, 2003
Archived
Monitoring, Regular
—
Nitrate
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
December 1, 1995 – December 31, 1995
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1994 – September 30, 1994
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025 – July 31, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2024 – October 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2024 – August 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
February 1, 2010 – February 28, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2003 – October 31, 2003	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
January 1, 2003 – December 31, 2003	Monitoring, Regular	Nitrate	—	Resolved
December 1, 1995 – December 31, 1995	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
September 1, 1994 – September 30, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

October 9, 2025State Public Notification requested1 linked violation
October 9, 2025State Violation/Reminder Notice1 linked violation
September 4, 2025State Compliance achieved1 linked violation
June 25, 2025State Public Notification received1 linked violation
June 25, 2025State Public Notification received1 linked violation
November 27, 2024State Violation/Reminder Notice1 linked violation
November 27, 2024State Public Notification requested1 linked violation
November 25, 2024State Compliance achieved1 linked violation
October 1, 2024State Compliance achieved1 linked violation
September 25, 2024State Public Notification requested1 linked violation
September 25, 2024State Violation/Reminder Notice1 linked violation
April 10, 2010State Compliance achieved1 linked violation
April 6, 2010State Public Notification received1 linked violation
March 15, 2010State Public Notification requested1 linked violation
March 15, 2010State Violation/Reminder Notice1 linked violation
July 13, 2004State Compliance achieved1 linked violation
June 1, 2004State Public Notification received1 linked violation
February 24, 2004State Public Notification requested1 linked violation
February 24, 2004State Violation/Reminder Notice1 linked violation
January 20, 2004State Public Notification received1 linked violation
December 8, 2003State Public Notification requested1 linked violation
December 8, 2003State Violation/Reminder Notice1 linked violation
November 4, 1996State Public Notification received1 linked violation
October 19, 1996State Violation/Reminder Notice1 linked violation
October 19, 1996State Public Notification requested1 linked violation
August 23, 1996State Public Notification received1 linked violation
February 18, 1996State Violation/Reminder Notice1 linked violation
January 20, 1996State Public Notification requested2 linked violations
January 20, 1996State Violation/Reminder Notice1 linked violation
November 9, 1995State Public Notification received1 linked violation
November 21, 1994State Public Notification received1 linked violation
November 19, 1994State Violation/Reminder Notice1 linked violation
August 1, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
August 1, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record

Common questions

Is DIAMOND LAKE MHP required to publish a Consumer Confidence Report?: Yes. DIAMOND LAKE MHP 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 DIAMOND LAKE MHP’s next Consumer Confidence Report due?: DIAMOND LAKE MHP’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does DIAMOND LAKE MHP have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for DIAMOND LAKE MHP.
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

GOGGIN, DAWN

847-566-6690

MUNDELEIN, IL 60060