PA1460073 · Pennsylvania

AQUA PA MAIN SYSTEM

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

Violation records shown: 30
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 28

Counties listed by EPA · Montgomery County, Pennsylvania

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

Violations and what followed

Among 30 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 365 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2529581 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2025 · period end September 30, 2025 · first reported March 9, 2026 · EPA return-to-compliance field September 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262958128	October 24, 2025	Informal	State Violation/Reminder Notice
26295812028	November 3, 2025	Informal	State Public Notification requested
26295813028	June 4, 2026	Informal	State Public Notification received
26295814028	June 4, 2026	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 2502308 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start November 13, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25023063	December 31, 2024	Informal	State Violation/Reminder Notice
25023063003	December 31, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 2502306 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 1, 2024 · period end November 30, 2024 · first reported February 19, 2025 · EPA return-to-compliance field November 30, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25023061003	December 31, 2024	Informal	State Public Notification requested
25023062003	December 31, 2024	Informal	State Public Notification received
25023063	December 31, 2024	Informal	State Violation/Reminder Notice
25023063003	December 31, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503786 · Thallium, Total · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503785 · Beryllium, Total · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
250378526	January 27, 2025	Informal	State Public Notification received
25037632004	January 28, 2025	Informal	State Public Notification requested
25037851026	January 28, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503784 · Antimony, Total · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503783 · Selenium · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503782 · Nickel · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503781 · Mercury · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503780 · Fluoride · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503779 · CYANIDE · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503778 · Chromium · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503777 · Cadmium · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503776 · Barium · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503775 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503774 · Thallium, Total · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503773 · Beryllium, Total · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503772 · Antimony, Total · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503771 · Selenium · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503770 · Nickel · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503769 · Mercury · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503768 · Fluoride · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503767 · CYANIDE · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503766 · Chromium · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503765 · Cadmium · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503764 · Barium · Inorganic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2503763 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 19, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25037634	January 27, 2025	Informal	State Violation/Reminder Notice
25037632004	January 28, 2025	Informal	State Public Notification requested
25037633004	May 21, 2025	Informal	State Public Notification received
25037634004	May 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2404184 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 2024 · EPA return-to-compliance field December 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
240418484001	January 30, 2024	Informal	State Violation/Reminder Notice
240418485001	February 6, 2024	Informal	State Public Notification requested
240418486001	May 3, 2024	Informal	State Public Notification received
240418487001	May 3, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 2317364 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start January 1, 2023 · period end January 31, 2023 · first reported May 22, 2023 · EPA return-to-compliance field January 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
231736478001	April 10, 2023	Informal	State Violation/Reminder Notice
231736480001	August 15, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2122543 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start June 1, 2021 · period end June 30, 2021 · first reported August 15, 2021 · EPA return-to-compliance field June 30, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
212254366002	August 11, 2021	Informal	State Violation/Reminder Notice
212254368002	September 29, 2021	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