NM3500221 · New Mexico

ABIQUIU MDWCA

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

Violation records shown: 39
EPA health-based flag: 6
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 15

Counties listed by EPA · Rio Arriba County, New Mexico

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

Violations and what followed

Among 37 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 364 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65870 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start February 21, 2025 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
298 April 20, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65872 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start May 21, 2023 · period end June 24, 2023 · first reported June 16, 2026 · EPA return-to-compliance field June 24, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
297 June 24, 2023 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65869 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start April 16, 2023 · period end June 24, 2023 · first reported June 16, 2026 · EPA return-to-compliance field June 24, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
296 June 24, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
298	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
297	June 24, 2023	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
296	June 24, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 65858 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 29, 2022 · period end October 13, 2023 · first reported May 16, 2023 · EPA return-to-compliance field October 13, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
276	March 27, 2023	Informal	State Violation/Reminder Notice
277	March 27, 2023	Informal	State Public Notification requested
285	May 24, 2023	Informal	State Public Notification received
283	October 13, 2023	Resolving	State Compliance achieved
284	October 13, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 65857 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 29, 2022 · period end March 10, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 10, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
278	March 10, 2023	Resolving	State Compliance achieved
276	March 27, 2023	Informal	State Violation/Reminder Notice
277	March 27, 2023	Informal	State Public Notification requested
285	May 24, 2023	Informal	State Public Notification received

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 65856 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 29, 2022 · period end July 21, 2025 · first reported May 16, 2023 · EPA return-to-compliance field July 21, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
276	March 27, 2023	Informal	State Violation/Reminder Notice
277	March 27, 2023	Informal	State Public Notification requested
285	May 24, 2023	Informal	State Public Notification received
292	July 21, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 65859 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported March 28, 2024 · EPA return-to-compliance field September 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
286	February 21, 2024	Informal	State Violation/Reminder Notice
287	February 21, 2024	Informal	State Public Notification requested
288	February 21, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 65853 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2022 · period end July 31, 2022 · first reported November 14, 2022 · EPA return-to-compliance field July 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
268	August 2, 2022	Resolving	State Compliance achieved
266	August 26, 2022	Informal	State Violation/Reminder Notice
267	August 26, 2022	Informal	State Public Notification requested
282	June 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 65851 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start June 1, 2022 · period end June 30, 2022 · first reported August 10, 2022 · EPA return-to-compliance field June 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
262	July 29, 2022	Informal	State Violation/Reminder Notice
263	July 29, 2022	Informal	State Public Notification requested
274	July 29, 2022	Informal	State Public Notification requested
272	August 30, 2022	Resolving	State Compliance achieved
281	June 21, 2023	Informal	State Public Notification received

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65852 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start May 29, 2022 · period end June 16, 2022 · first reported November 14, 2022 · EPA return-to-compliance field June 16, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
265 June 16, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
265	June 16, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 65850 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2022 · period end May 31, 2022 · first reported August 10, 2022 · EPA return-to-compliance field May 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
260	June 22, 2022	Informal	State Violation/Reminder Notice
261	June 22, 2022	Informal	State Public Notification requested
264	August 9, 2022	Informal	State Public Notification received
271	August 30, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 65862 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported March 28, 2024 · EPA return-to-compliance field June 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
286	February 21, 2024	Informal	State Violation/Reminder Notice
287	February 21, 2024	Informal	State Public Notification requested
288	February 21, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 65849 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2022 · period end April 30, 2022 · first reported August 10, 2022 · EPA return-to-compliance field April 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
257	May 20, 2022	Informal	State Violation/Reminder Notice
258	May 20, 2022	Informal	State Public Notification requested
270	August 30, 2022	Resolving	State Compliance achieved
280	June 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 65846 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2022 · period end March 31, 2022 · first reported May 19, 2022 · EPA return-to-compliance field March 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
252	April 15, 2022	Informal	State Violation/Reminder Notice
253	April 15, 2022	Informal	State Public Notification requested
269	August 30, 2022	Resolving	State Compliance achieved
279	June 21, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 65863 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported March 28, 2024 · EPA return-to-compliance field March 31, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
286	February 21, 2024	Informal	State Violation/Reminder Notice
287	February 21, 2024	Informal	State Public Notification requested
288	February 21, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 65844 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2021 · period end August 5, 2021 · first reported September 27, 2021 · EPA return-to-compliance field August 5, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
242 July 12, 2021 Informal State Violation/Reminder Notice
243 August 5, 2021 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
242	July 12, 2021	Informal	State Violation/Reminder Notice
243	August 5, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 65841 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2020 · period end November 30, 2020 · first reported February 22, 2021 · EPA return-to-compliance field November 30, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
237	December 9, 2020	Resolving	State Compliance achieved
233	December 18, 2020	Informal	State Violation/Reminder Notice
234	December 18, 2020	Informal	State Public Notification requested
244	August 5, 2021	Informal	State Public Notification received

Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 65865 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 1, 2020 · period end November 24, 2024 · first reported March 31, 2025 · EPA return-to-compliance field November 24, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
290 November 24, 2024 Informal State Violation/Reminder Notice
291 November 24, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
290	November 24, 2024	Informal	State Violation/Reminder Notice
291	November 24, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 65848 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end September 30, 2021 · first reported May 19, 2022 · EPA return-to-compliance field September 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
254	May 4, 2022	Informal	State Violation/Reminder Notice
255	May 4, 2022	Informal	State Public Notification requested
256	May 11, 2022	Informal	State Public Notification received
273	September 20, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 65847 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end September 30, 2021 · first reported May 19, 2022 · EPA return-to-compliance field September 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
254	May 4, 2022	Informal	State Violation/Reminder Notice
255	May 4, 2022	Informal	State Public Notification requested
256	May 11, 2022	Informal	State Public Notification received
273	September 20, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 65843 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2020 · period end September 16, 2021 · first reported September 8, 2021 · EPA return-to-compliance field September 16, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
238	May 28, 2021	Informal	State Violation/Reminder Notice
239	May 28, 2021	Informal	State Public Notification requested
246	September 16, 2021	Resolving	State Compliance achieved
259	June 17, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 65842 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end December 9, 2020 · first reported February 22, 2021 · EPA return-to-compliance field December 9, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
237	December 9, 2020	Resolving	State Compliance achieved
235	February 3, 2021	Informal	State Violation/Reminder Notice
236	February 3, 2021	Informal	State Public Notification requested
241	June 30, 2021	Informal	State Public Notification received

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 65805 · Groundwater Rule · Ground Water Rule

Noncompliance period start August 2, 2018 · period end February 15, 2022 · first reported September 24, 2018 · EPA return-to-compliance field February 15, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
125	August 15, 2018	Informal	State Violation/Reminder Notice
126	August 15, 2018	Informal	State Public Notification requested
191	September 30, 2019	Informal	State Public Notification received
249	February 15, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 65795 · Groundwater Rule · Ground Water Rule

Noncompliance period start August 2, 2018 · period end January 26, 2021 · first reported September 24, 2018 · EPA return-to-compliance field January 26, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
119	August 15, 2018	Informal	State Violation/Reminder Notice
120	August 15, 2018	Informal	State Public Notification requested
194	September 30, 2019	Informal	State Public Notification received
247	January 26, 2021	Resolving	State Compliance achieved
248	January 26, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 65793 · Groundwater Rule · Ground Water Rule

Noncompliance period start August 2, 2018 · period end February 15, 2022 · first reported September 24, 2018 · EPA return-to-compliance field February 15, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
113	August 15, 2018	Informal	State Violation/Reminder Notice
114	August 15, 2018	Informal	State Public Notification requested
192	September 30, 2019	Informal	State Public Notification received
250	February 15, 2022	Resolving	State Compliance achieved
251	February 15, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 65834 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start December 30, 2017 · period end March 22, 2023 · first reported February 18, 2020 · EPA return-to-compliance field March 22, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
214 February 10, 2020 Informal State Violation/Reminder Notice
275 March 22, 2023 Resolving State Compliance achieved
Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 65877 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 1, 2015 · period end August 4, 2017 · first reported June 16, 2026 · EPA return-to-compliance field August 4, 2017

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
300 August 4, 2017 Resolving State Compliance achieved
299 May 11, 2026 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65845 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 5, 2014 · period end October 5, 2021 · first reported November 29, 2021 · EPA return-to-compliance field October 5, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
245 October 5, 2021 Resolving State Compliance achieved
Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 65876 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 1, 2014 · period end August 4, 2017 · first reported June 16, 2026 · EPA return-to-compliance field August 4, 2017

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
300 August 4, 2017 Resolving State Compliance achieved
299 May 11, 2026 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 65866 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2014 · period end August 4, 2017 · first reported March 31, 2026 · EPA return-to-compliance field August 4, 2017

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
295 August 4, 2017 Resolving State Compliance achieved
294 January 29, 2026 Informal State Violation/Reminder Notice
Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 65864 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start October 1, 2012 · period end August 17, 2017 · first reported March 31, 2025 · EPA return-to-compliance field August 17, 2017

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
289 August 17, 2017 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65874 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 2, 2011 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
298 April 20, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65871 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 2, 2011 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
298 April 20, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65868 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 2, 2011 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
298 April 20, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65867 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 2, 2011 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
298 April 20, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 65875 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 1, 2010 · period end June 30, 2011 · first reported June 16, 2026 · EPA return-to-compliance field June 30, 2011

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
301 June 30, 2011 Resolving State Compliance achieved
299 May 11, 2026 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 65873 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start March 28, 2010 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
298 April 20, 2026 Resolving State Compliance achieved
Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Complete Failure to ReportViolation 204 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2002 · first reported November 15, 2005
No linked action row appears in the records shown.
Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Complete Failure to ReportViolation 104 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 19, 1999 · first reported November 15, 2005

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1E00 May 5, 2000 Informal Federal issued Formal Notice of Violation

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
214	February 10, 2020	Informal	State Violation/Reminder Notice
275	March 22, 2023	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
300	August 4, 2017	Resolving	State Compliance achieved
299	May 11, 2026	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
245	October 5, 2021	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
300	August 4, 2017	Resolving	State Compliance achieved
299	May 11, 2026	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
295	August 4, 2017	Resolving	State Compliance achieved
294	January 29, 2026	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
289	August 17, 2017	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
298	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
298	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
298	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
298	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
301	June 30, 2011	Resolving	State Compliance achieved
299	May 11, 2026	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
298	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1E00	May 5, 2000	Informal	Federal issued Formal Notice of Violation

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