IL1410250 · Illinois

HILLCREST

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

Violation records shown: 36
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 35

Counties listed by EPA · Ogle County, Illinois

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

Violations and what followed

Among 36 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 1,095 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Notification, Known or Potential LSLViolation 7156091 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start July 2, 2025 · period end August 27, 2025 · first reported November 21, 2025 · EPA return-to-compliance field August 27, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1812546	July 3, 2025	Informal	State Violation/Reminder Notice
1812547	July 3, 2025	Informal	State Public Notification requested
1812553	August 27, 2025	Resolving	State Compliance achieved
1812550	June 12, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 7156092 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2025 · period end June 30, 2026 · first reported November 21, 2025 · EPA return-to-compliance field June 30, 2026

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1812548	July 29, 2025	Informal	State Violation/Reminder Notice
1812549	July 29, 2025	Informal	State Public Notification requested
1812551	June 15, 2026	Informal	State Public Notification received
1812552	June 30, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7156089 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2024 · period end August 19, 2024 · first reported November 21, 2024 · EPA return-to-compliance field August 19, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1812543	August 19, 2024	Resolving	State Compliance achieved
1812541	August 29, 2024	Informal	State Violation/Reminder Notice
1812542	August 29, 2024	Informal	State Public Notification requested
1812544	April 21, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 7156088 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2024 · period end July 31, 2024 · first reported November 21, 2024 · EPA return-to-compliance field July 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1812543	August 19, 2024	Resolving	State Compliance achieved
1812539	August 29, 2024	Informal	State Violation/Reminder Notice
1812540	August 29, 2024	Informal	State Public Notification requested
1812545	April 21, 2025	Informal	State Public Notification received

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 7156087 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start February 9, 2024 · period end April 18, 2024 · first reported May 21, 2024 · EPA return-to-compliance field April 18, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1812536 March 15, 2024 Informal State Violation/Reminder Notice
1812537 April 18, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1812536	March 15, 2024	Informal	State Violation/Reminder Notice
1812537	April 18, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156085 · Chlordane · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156084 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156083 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156082 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156080 · Pentachlorophenol · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156079 · Benzo(a)pyrene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156078 · HEXACHLOROBENZENE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156077 · 2,4,5-TP · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156076 · 2,4-D · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156074 · Heptachlor epoxide · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156073 · Heptachlor · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156072 · LASSO · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156071 · Atrazine · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156070 · Aldicarb · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156069 · Carbofuran · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156068 · Aldicarb sulfone · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156067 · Aldicarb sulfoxide · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156066 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156065 · Dinoseb · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156064 · Picloram · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156063 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156062 · Simazine · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156061 · OXAMYL · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156060 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156059 · Endothall · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156058 · Diquat · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156057 · Dalapon · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156056 · Toxaphene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156055 · Methoxychlor · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156054 · BHC-GAMMA · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7156053 · Endrin · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · 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
1812533	February 8, 2023	Informal	State Public Notification requested
1812534	February 8, 2023	Informal	State Violation/Reminder Notice
1812535	April 11, 2023	Resolving	State Compliance achieved
1812538	April 18, 2024	Informal	State Public Notification received

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