Skip to content

IL0317765 · Illinois

BLACKHAWK ESTATES LLC

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 9
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 6

Counties listed by EPA · Cook County, Illinois

Open the EPA system record

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 8 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90.5 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Inadequate ReportingViolation 4553828 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2025 · first reported November 21, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8363464 August 20, 2025 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 4553827 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start June 8, 2024 · period end May 13, 2025 · first reported August 29, 2024 · EPA return-to-compliance field May 13, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8363458 July 17, 2024 Informal State Violation/Reminder Notice
8363462 May 13, 2025 Resolving State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4553826 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 29, 2024 · EPA return-to-compliance field June 30, 2024

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8363456	May 8, 2024	Informal	State Violation/Reminder Notice
8363457	May 8, 2024	Informal	State Public Notification requested
8363459	June 6, 2024	Informal	State Formal Notice of Violation issued
8363461	August 30, 2024	Resolving	State Compliance achieved
8363463	June 24, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 4553823 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8363446	April 14, 2023	Informal	State Violation/Reminder Notice
8363447	April 14, 2023	Informal	State Public Notification requested
8363455	April 26, 2023	Resolving	State Compliance achieved
8363453	May 24, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 4553824 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8363448	April 14, 2023	Informal	State Violation/Reminder Notice
8363449	April 14, 2023	Informal	State Public Notification requested
8363450	April 26, 2023	Resolving	State Compliance achieved
8363452	May 24, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4553822 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 28, 2023 · EPA return-to-compliance field December 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8363444	February 10, 2023	Informal	State Violation/Reminder Notice
8363445	February 10, 2023	Informal	State Public Notification requested
8363451	March 21, 2023	Resolving	State Compliance achieved
8363454	February 7, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4553821 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 10, 2022 · EPA return-to-compliance field September 30, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8363441	October 18, 2022	Informal	State Violation/Reminder Notice
8363443	October 24, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4553820 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported July 28, 2022 · EPA return-to-compliance field June 30, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8363438	July 13, 2022	Informal	State Violation/Reminder Notice
8363440	September 6, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4553819 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported February 9, 2022 · EPA return-to-compliance field December 31, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8363435	January 19, 2022	Informal	State Violation/Reminder Notice
8363437	March 10, 2022	Resolving	State Compliance achieved

EPA data and scope

How to read the records

The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.

We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.

EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility