AZ0409024 · Arizona
PORTER MOUNTAIN DWID
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 38
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 30
Counties listed by EPA · Navajo County, Arizona
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 29 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 10685 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start May 1, 2026 · period end May 31, 2026 · first reported August 14, 2026 · EPA return-to-compliance field May 31, 2026
No linked action row appears in the records shown.Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 10688 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end April 30, 2026 · first reported August 14, 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 10684 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start April 1, 2026 · period end April 30, 2026 · first reported August 14, 2026 · EPA return-to-compliance field April 30, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3288 June 9, 2026 Informal State Violation/Reminder Notice 3289 June 9, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 10682 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2026 · period end January 31, 2026 · first reported May 14, 2026 · EPA return-to-compliance field January 31, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3284 April 21, 2026 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 10677 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start November 19, 2025 · period end May 18, 2026 · first reported February 24, 2026 · EPA return-to-compliance field May 18, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3267 December 30, 2025 Informal State Violation/Reminder Notice 3268 December 30, 2025 Resolving State Compliance achieved 3299 May 18, 2026 Resolving State Compliance achieved Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Inadequate ReportingViolation 10671 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2025 · first reported February 13, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3247 October 20, 2025 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10680 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2025 · period end October 31, 2025 · first reported February 13, 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 3270 January 16, 2026 Informal State Violation/Reminder Notice 3278 February 18, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10675 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2025 · period end July 31, 2025 · first reported February 24, 2026 · 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 3262 November 4, 2025 Informal State Violation/Reminder Notice 3278 February 18, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 10670 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end May 18, 2026 · first reported November 17, 2025 · EPA return-to-compliance field May 18, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3244 October 20, 2025 Informal State Violation/Reminder Notice 3287 May 18, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10667 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start February 1, 2025 · period end February 28, 2025 · first reported May 13, 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 3242 May 5, 2025 Informal State Violation/Reminder Notice 3278 February 18, 2026 Resolving State Compliance achieved Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 10673 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported February 24, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3250 October 29, 2025 Informal State Violation/Reminder Notice Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 10672 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported November 17, 2025 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3250 October 29, 2025 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 10666 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 19, 2024 · period end May 18, 2026 · first reported February 24, 2026 · EPA return-to-compliance field May 18, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3235 February 3, 2025 Informal State Violation/Reminder Notice 3297 May 18, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
LSL InventoryViolation 10662 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end February 24, 2026 · first reported February 24, 2026 · EPA return-to-compliance field February 24, 2026
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3221 November 18, 2024 Informal State Violation/Reminder Notice 3222 November 18, 2024 Informal State Public Notification requested 3286 February 24, 2026 Resolving State Compliance achieved 9999900000000000001 March 26, 2026 Formal Federal Final Administrative Order issued Monitoring or reporting · Resolved
LSL ReportingViolation 10661 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end February 24, 2026 · first reported February 24, 2026 · EPA return-to-compliance field February 24, 2026
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3218 November 18, 2024 Informal State Violation/Reminder Notice 3219 November 18, 2024 Informal State Public Notification requested 3286 February 24, 2026 Resolving State Compliance achieved 9999900000000000001 March 26, 2026 Formal Federal Final Administrative Order issued Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Inadequate ReportingViolation 10660 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2024 · first reported February 18, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3224 October 17, 2024 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10663 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2024 · period end September 30, 2024 · first reported February 24, 2026 · 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 3228 November 26, 2024 Informal State Violation/Reminder Notice 3237 December 6, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10665 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start August 1, 2024 · period end August 31, 2024 · first reported December 31, 2024 · 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 3231 November 26, 2024 Informal State Violation/Reminder Notice 3237 December 6, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10664 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end July 31, 2024 · first reported February 24, 2026 · 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 3233 November 26, 2024 Informal State Violation/Reminder Notice 3237 December 6, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10656 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start June 1, 2024 · period end June 30, 2024 · first reported August 14, 2024 · 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 3212 August 14, 2024 Informal State Violation/Reminder Notice 3237 December 6, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10653 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start March 1, 2024 · period end March 31, 2024 · first reported February 24, 2026 · 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 3198 April 22, 2024 Informal State Violation/Reminder Notice 3204 April 22, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10650 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3193 February 27, 2024 Informal State Violation/Reminder Notice 3196 April 22, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10647 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 15, 2023 · EPA return-to-compliance field March 31, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3178 May 8, 2023 Informal State Violation/Reminder Notice 3185 May 17, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 10643 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2022 · period end March 24, 2023 · first reported February 15, 2023 · EPA return-to-compliance field March 24, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3167 December 28, 2022 Informal State Violation/Reminder Notice 3177 March 24, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10644 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 15, 2023 · EPA return-to-compliance field December 31, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3170 February 10, 2023 Informal State Violation/Reminder Notice 3176 February 10, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10640 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3163 November 7, 2022 Informal State Violation/Reminder Notice 3166 December 14, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 10634 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 10, 2021 · period end April 27, 2026 · first reported February 16, 2022 · EPA return-to-compliance field April 27, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3144 January 18, 2022 Informal State Violation/Reminder Notice 3295 April 27, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10636 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2021 · period end December 31, 2021 · first reported May 16, 2022 · EPA return-to-compliance field December 31, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3146 February 18, 2022 Informal State Violation/Reminder Notice 3153 August 24, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10639 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2021 · period end August 31, 2022 · first reported November 16, 2022 · EPA return-to-compliance field August 31, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3154 November 7, 2022 Informal State Violation/Reminder Notice 3186 August 24, 2023 Resolving State Compliance achieved 3197 April 22, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10638 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2021 · period end August 31, 2022 · first reported November 16, 2022 · EPA return-to-compliance field August 31, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3154 November 7, 2022 Informal State Violation/Reminder Notice 3186 August 24, 2023 Resolving State Compliance achieved 3197 April 22, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10633 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3141 December 7, 2021 Informal State Violation/Reminder Notice 3153 August 24, 2022 Resolving State Compliance achieved Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 10630 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start February 22, 2021 · first reported March 31, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3129 March 14, 2021 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 10626 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2021 · period end May 24, 2021 · first reported March 31, 2021 · EPA return-to-compliance field May 24, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3117 January 22, 2021 Informal State Violation/Reminder Notice 3118 January 22, 2021 Informal State Public Notification requested 3205 May 24, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10629 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end December 31, 2020 · first reported February 12, 2021 · EPA return-to-compliance field December 31, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3133 February 10, 2021 Resolving State Compliance achieved 3131 February 11, 2021 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 10620 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2020 · period end October 16, 2020 · first reported February 12, 2021 · EPA return-to-compliance field October 16, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3102 October 16, 2020 Resolving State Compliance achieved 3100 November 22, 2020 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10623 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2020 · period end September 30, 2020 · first reported February 2, 2021 · EPA return-to-compliance field September 30, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3111 November 23, 2020 Informal State Violation/Reminder Notice 3113 December 2, 2020 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10625 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2019 · period end August 31, 2020 · first reported February 2, 2021 · EPA return-to-compliance field August 31, 2020
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3114 December 9, 2020 Informal State Violation/Reminder Notice 3115 December 9, 2020 Informal State Public Notification requested 3136 August 23, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 10624 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2019 · period end August 31, 2020 · first reported February 2, 2021 · EPA return-to-compliance field August 31, 2020
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3114 December 9, 2020 Informal State Violation/Reminder Notice 3115 December 9, 2020 Informal State Public Notification requested 3136 August 23, 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