MAZON, IL · Grundy County
MAZON Water System
Consumer Confidence Report status
MAZON 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 MAZON.
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)
- IL0630500
- System type
- Community Water System
- Population served
- 994
- Service connections
- 472
- Ownership
- local government
- Water source
- groundwater (wells)
MAZON is one of 773 community water systems in Illinois in the 501 to 3,300 people size category, serving 994 people from groundwater.
As of August 1, 2026, its federal record holds 9 entries between 1977 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.
Of the 9, 7 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 Lead and Copper Rule, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Consumer Confidence Rule.
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2023 – December 26, 2023
ResolvedLead Consumer Notice
—Lead and Copper Rule
December 30, 2020 – January 28, 2021
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2020 – September 10, 2021
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2019 – August 16, 2019
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2019 – August 16, 2019
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
September 1, 2017 – August 31, 2018
ResolvedWater Quality Parameter M/R
—Lead and Copper Rule
July 1, 2009 – December 18, 2009
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
September 1, 2000 – September 30, 2000
ArchivedMonitoring, 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, 2023 – December 26, 2023 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| December 30, 2020 – January 28, 2021 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| October 1, 2020 – September 10, 2021 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| January 1, 2019 – August 16, 2019 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2019 – August 16, 2019 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| September 1, 2017 – August 31, 2018 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| July 1, 2009 – December 18, 2009 | Water Quality Parameter M/R | Lead and Copper Rule | — | Resolved |
| September 1, 2000 – September 30, 2000 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| 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
- December 26, 2023State Compliance achieved1 linked violation
- December 4, 2023State Violation/Reminder Notice1 linked violation
- September 10, 2021State Compliance achieved1 linked violation
- January 28, 2021State Compliance achieved1 linked violation
- January 6, 2021State Violation/Reminder Notice1 linked violation
- October 20, 2020State Violation/Reminder Notice1 linked violation
- July 2, 2020State Public Notification received2 linked violations
- October 15, 2019State Violation/Reminder Notice2 linked violations
- October 15, 2019State Public Notification requested2 linked violations
- October 1, 2019State Public Notification received2 linked violations
- August 16, 2019State Compliance achieved6 linked violations
- October 15, 2018State Violation/Reminder Notice2 linked violations
- October 15, 2018State Public Notification requested2 linked violations
- July 10, 2018State Public Notification received2 linked violations
- October 12, 2017State Public Notification requested2 linked violations
- October 12, 2017State Violation/Reminder Notice2 linked violations
- December 18, 2009State Compliance achieved1 linked violation
- December 15, 2009State Violation/Reminder Notice1 linked violation
- November 15, 2000State Violation/Reminder Notice9 linked violations
Common questions
Is MAZON required to publish a Consumer Confidence Report?
- Yes. MAZON 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 MAZON’s next Consumer Confidence Report due?
- MAZON’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MAZON have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MAZON.
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
MARQUES, JEFFREY A.
815-448-2206
MAZON, IL 60444