ST. CHARLES, IL · Kane County
HIGHLAND SUBDIVISION Water System
Consumer Confidence Report status
HIGHLAND SUBDIVISION 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 1 item for HIGHLAND SUBDIVISION that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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)
- IL0895530
- System type
- Community Water System
- Population served
- 50
- Service connections
- 20
- Ownership
- privately owned
- Water source
- groundwater (wells)
HIGHLAND SUBDIVISION is one of 1,572 community water systems in Illinois in the 500 or fewer people size category, serving 50 people from groundwater.
As of August 1, 2026, its federal record holds 7 entries between 1977 and 2025, of which 1 remains open; none are health-based.
Of the 7, 4 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, the Lead and Copper Rule, and the Consumer Confidence Rule.
Violation history
Notification, Known or Potential LSL
—LEAD AND COPPER RULE REVISIONS
July 2, 2025
UnaddressedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2024 – August 6, 2024
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
June 1, 2012 – June 30, 2012
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
April 1, 2012 – April 30, 2012
ResolvedWater Quality Parameter M/R
—Lead and Copper Rule
July 1, 2009 – December 24, 2009
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
February 1, 1993 – February 28, 1993
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived
Unaddressed no corrective action on record yetResolved 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 2, 2025 | Notification, Known or Potential LSL | LEAD AND COPPER RULE REVISIONS | — | Unaddressed |
| July 1, 2024 – August 6, 2024 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| June 1, 2012 – June 30, 2012 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| April 1, 2012 – April 30, 2012 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| July 1, 2009 – December 24, 2009 | Water Quality Parameter M/R | Lead and Copper Rule | — | Resolved |
| February 1, 1993 – February 28, 1993 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Archived |
| June 30, 1977 – June 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- July 3, 2025State Public Notification requested1 linked violation
- July 3, 2025State Violation/Reminder Notice1 linked violation
- August 6, 2024State Compliance achieved3 linked violations
- July 31, 2024State Violation/Reminder Notice1 linked violation
- August 3, 2012State Formal Notice of Violation issued3 linked violations
- July 30, 2012State Compliance achieved2 linked violations
- July 20, 2012State Public Notification received2 linked violations
- July 13, 2012State Violation/Reminder Notice2 linked violations
- July 13, 2012State Public Notification requested1 linked violation
- May 22, 2012State Compliance achieved3 linked violations
- May 15, 2012State Violation/Reminder Notice1 linked violation
- May 15, 2012State Public Notification requested1 linked violation
- April 11, 2012State Public Notification received1 linked violation
- April 1, 1993State Violation/Reminder Notice1 linked violation
- April 1, 1993State Public Notification requested1 linked violation
- March 27, 1993State Public Notification received1 linked violation
- October 7, 1990State Public Notification requested1 linked violation
- September 8, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- September 8, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- January 6, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- January 6, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
Common questions
Is HIGHLAND SUBDIVISION required to publish a Consumer Confidence Report?
- Yes. HIGHLAND SUBDIVISION 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 HIGHLAND SUBDIVISION’s next Consumer Confidence Report due?
- HIGHLAND SUBDIVISION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does HIGHLAND SUBDIVISION have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for HIGHLAND SUBDIVISION that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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
JANSKY, VANESSA
331-454-2809
ST. CHARLES, IL 60174