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PR0476314 · Puerto Rico

SIERRITA-CAONILLA

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

Violation records shown: 45
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 44

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

EPA health-based flag · Unaddressed by formal action

LSL InventoryViolation 9051172 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · first reported March 28, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091715	March 26, 2025	Informal	State Formal Notice of Violation issued
8091716	March 26, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051204 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start June 1, 2026 · period end June 30, 2026 · first reported August 28, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051203 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start May 1, 2026 · period end May 31, 2026 · first reported August 28, 2026 · EPA return-to-compliance field May 31, 2026
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051202 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start April 1, 2026 · period end April 30, 2026 · first reported August 28, 2026 · EPA return-to-compliance field April 30, 2026
No linked action row appears in the records shown.

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051201 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2026 · period end March 31, 2026 · first reported June 5, 2026 · EPA return-to-compliance field March 31, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091768	May 15, 2026	Informal	State Violation/Reminder Notice
8091769	May 15, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051200 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2026 · period end February 28, 2026 · first reported June 5, 2026 · EPA return-to-compliance field February 28, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091766	May 15, 2026	Informal	State Violation/Reminder Notice
8091767	May 15, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051199 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2026 · period end January 31, 2026 · first reported June 5, 2026 · EPA return-to-compliance field January 31, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091764	May 15, 2026	Informal	State Violation/Reminder Notice
8091765	May 15, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051198 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported March 9, 2026 · EPA return-to-compliance field December 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091762	February 23, 2026	Informal	State Violation/Reminder Notice
8091763	February 23, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051197 · Revised Total Coliform Rule · Revised Total Coliform Rule

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

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091760	February 23, 2026	Informal	State Violation/Reminder Notice
8091761	February 23, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051196 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2025 · period end October 31, 2025 · first reported March 9, 2026 · EPA return-to-compliance field October 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091758	February 23, 2026	Informal	State Violation/Reminder Notice
8091759	February 23, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051195 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2025 · period end September 30, 2025 · first reported December 23, 2025 · EPA return-to-compliance field September 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091756	November 25, 2025	Informal	State Violation/Reminder Notice
8091757	November 25, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051194 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2025 · period end August 31, 2025 · first reported December 23, 2025 · EPA return-to-compliance field August 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091754	November 25, 2025	Informal	State Violation/Reminder Notice
8091755	November 25, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051193 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2025 · period end July 31, 2025 · first reported December 23, 2025 · EPA return-to-compliance field July 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091752	November 25, 2025	Informal	State Violation/Reminder Notice
8091753	November 25, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051192 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start June 1, 2025 · period end June 30, 2025 · first reported September 22, 2025 · EPA return-to-compliance field June 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091750	August 29, 2025	Informal	State Violation/Reminder Notice
8091751	August 29, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051191 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2025 · period end May 31, 2025 · first reported September 22, 2025 · EPA return-to-compliance field May 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091748	August 29, 2025	Informal	State Violation/Reminder Notice
8091749	August 29, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051190 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2025 · period end April 30, 2025 · first reported September 22, 2025 · EPA return-to-compliance field April 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091746	August 29, 2025	Informal	State Violation/Reminder Notice
8091747	August 29, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051189 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2025 · period end March 31, 2025 · first reported June 2, 2025 · EPA return-to-compliance field March 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091744	May 21, 2025	Informal	State Violation/Reminder Notice
8091745	May 21, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051188 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2025 · period end February 28, 2025 · first reported June 2, 2025 · EPA return-to-compliance field February 28, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091742	May 21, 2025	Informal	State Violation/Reminder Notice
8091743	May 21, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051187 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2025 · period end January 31, 2025 · first reported June 2, 2025 · EPA return-to-compliance field January 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091740	May 20, 2025	Informal	State Violation/Reminder Notice
8091741	May 20, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051186 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2024 · period end December 31, 2024 · first reported June 2, 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
8091738	May 13, 2025	Informal	State Violation/Reminder Notice
8091739	May 13, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051185 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2024 · period end November 30, 2024 · first reported June 2, 2025 · EPA return-to-compliance field November 30, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091736	May 13, 2025	Informal	State Violation/Reminder Notice
8091737	May 13, 2025	Informal	State Public Notification requested

Monitoring or reporting · Unaddressed by formal action
LSL ReportingViolation 9051173 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · first reported March 28, 2025
No linked action row appears in the records shown.

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051184 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2024 · period end October 31, 2024 · first reported June 2, 2025 · EPA return-to-compliance field October 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091734	May 13, 2025	Informal	State Violation/Reminder Notice
8091735	May 13, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051182 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2024 · period end September 30, 2024 · first reported June 2, 2025 · EPA return-to-compliance field September 30, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091730	May 8, 2025	Informal	State Violation/Reminder Notice
8091731	May 8, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051181 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2024 · period end August 31, 2024 · first reported June 2, 2025 · EPA return-to-compliance field August 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091728	May 8, 2025	Informal	State Violation/Reminder Notice
8091729	May 8, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051180 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2024 · period end July 31, 2024 · first reported June 2, 2025 · EPA return-to-compliance field July 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091724	May 1, 2025	Informal	State Violation/Reminder Notice
8091725	May 1, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051178 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start June 1, 2024 · period end June 30, 2024 · first reported June 2, 2025 · EPA return-to-compliance field June 30, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091722	April 22, 2025	Informal	State Violation/Reminder Notice
8091723	April 22, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051177 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported June 2, 2025 · EPA return-to-compliance field May 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091720	April 22, 2025	Informal	State Violation/Reminder Notice
8091721	April 22, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051176 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2024 · period end April 30, 2024 · first reported June 2, 2025 · EPA return-to-compliance field April 30, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091718	April 16, 2025	Informal	State Violation/Reminder Notice
8091719	April 16, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Routine (RTCR)Violation 9051183 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2024 · period end March 31, 2024 · first reported June 2, 2025 · EPA return-to-compliance field March 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8091732	May 9, 2025	Informal	State Violation/Reminder Notice
8091733	May 9, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051175 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start February 1, 2024 · period end February 29, 2024 · first reported March 28, 2025 · EPA return-to-compliance field February 29, 2024
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051174 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start January 1, 2024 · period end January 31, 2024 · first reported March 28, 2025 · EPA return-to-compliance field January 31, 2024
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051171 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 28, 2024 · EPA return-to-compliance field December 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 9051179 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start July 1, 2023 · first reported June 2, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051170 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 30, 2023 · EPA return-to-compliance field September 30, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051169 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported November 30, 2023 · EPA return-to-compliance field June 30, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051168 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported August 31, 2023 · EPA return-to-compliance field March 31, 2023
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051167 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported August 31, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051166 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported February 28, 2023 · EPA return-to-compliance field September 30, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051165 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported December 1, 2022 · EPA return-to-compliance field June 30, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051164 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported December 1, 2022 · EPA return-to-compliance field March 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051163 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported December 1, 2022 · EPA return-to-compliance field December 31, 2021
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051162 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported March 31, 2022 · EPA return-to-compliance field September 30, 2021
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051161 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported December 6, 2021 · EPA return-to-compliance field June 30, 2021
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 9051160 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start January 1, 2021 · period end January 31, 2021 · first reported June 1, 2021 · EPA return-to-compliance field January 31, 2021
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