MD0180022 · Maryland

PATUXENT NAVAL AIR STATION (NAVFAC-WASH)

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

Violation records shown: 13
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 13

Counties listed by EPA · St. Mary's County, Maryland

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

Violations and what followed

Among 4 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 233 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 48 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start June 1, 2023 · period end August 31, 2023 · first reported May 17, 2024 · EPA return-to-compliance field August 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
82	April 4, 2024	Informal	State Violation/Reminder Notice
83	April 4, 2024	Informal	State Public Notification requested
84	April 4, 2024	Resolving	State Compliance achieved
85	June 27, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 47 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2022 · period end January 11, 2023 · first reported August 18, 2023 · EPA return-to-compliance field January 11, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	September 13, 2022	Informal	State Violation/Reminder Notice
73	November 29, 2022	Informal	State Violation/Reminder Notice
74	January 11, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 45 · Nitrate · Nitrate Rule

Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported May 22, 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
68	March 21, 2023	Resolving	State Compliance achieved
66	April 4, 2023	Informal	State Violation/Reminder Notice
67	April 4, 2023	Informal	State Public Notification requested
75	October 31, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 46 · Fluoride · Inorganic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 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
71	March 21, 2023	Resolving	State Compliance achieved
69	April 4, 2023	Informal	State Violation/Reminder Notice
70	April 4, 2023	Informal	State Public Notification requested
76	October 31, 2023	Informal	State Public Notification received

Monitoring or reporting · Archived
Monitoring, RegularViolation 44 · Selenium · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 43 · Thallium, Total · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 42 · Beryllium, Total · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 41 · Antimony, Total · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 40 · Nickel · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 39 · Mercury · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 38 · Chromium · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 37 · Cadmium · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 36 · Barium · Inorganic Chemicals
Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported May 22, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.

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