ADDISON, IL · DuPage County
ADDISON Water System
Consumer Confidence Report status
ADDISON 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 ADDISON.
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)
- IL0430050
- System type
- Community Water System
- Population served
- 38,017
- Service connections
- 9,997
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
ADDISON is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 38,017 people from surface water.
As of August 1, 2026, its federal record holds 3 entries between 1977 and 2024, all of which EPA lists as closed.
All 3 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 Stage 2 Disinfectants and Disinfection Byproducts Rule and the Radionuclides and Revised Rad Rule.
Violation history
Monitoring and Reporting (DBP)
—TTHM
July 1, 2024 – September 30, 2024
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
July 1, 2024 – September 30, 2024
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
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, 2024 – September 30, 2024 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| July 1, 2024 – September 30, 2024 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| June 30, 1977 – June 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- June 20, 2025State Public Notification received5 linked violations
- January 17, 2025State Compliance achieved3 linked violations
- January 7, 1989State Public Notification requested8 linked violations
Common questions
Is ADDISON required to publish a Consumer Confidence Report?
- Yes. ADDISON 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 ADDISON’s next Consumer Confidence Report due?
- ADDISON’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does ADDISON have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for ADDISON.
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
HAYDEN, RYAN
630-620-2020
ADDISON, IL 60101