MO2010029 · Missouri

ARROW ROCK PWS

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

Violation records shown: 24
EPA health-based flag: 11
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 12

Counties listed by EPA · Saline County, Missouri

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

Violations and what followed

Among 19 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.

EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 7102643 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported September 28, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 7102642 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2026 · period end March 31, 2026 · first reported June 16, 2026 · EPA return-to-compliance field March 31, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2395	May 29, 2026	Informal	State Public Notification requested
2396	May 29, 2026	Informal	State Formal Notice of Violation issued
2397	June 15, 2026	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 7102639 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2389	March 9, 2026	Informal	State Public Notification requested
2390	March 9, 2026	Informal	State Formal Notice of Violation issued
2394	April 27, 2026	Informal	State Public Notification received

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 7102637 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 3, 2025 · period end November 18, 2025 · first reported December 31, 2025 · EPA return-to-compliance field November 18, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2385 November 18, 2025 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2385	November 18, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Unaddressed by formal action

Notification, Known or Potential LSLViolation 7102641 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start July 2, 2025 · first reported June 16, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2403	March 24, 2026	Informal	State Public Notification received
2391	April 6, 2026	Informal	State Violation/Reminder Notice
2392	April 6, 2026	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 7102638 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported December 31, 2025 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2387	December 11, 2025	Informal	State Public Notification requested
2388	December 11, 2025	Informal	State Formal Notice of Violation issued
2393	April 27, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 7102635 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2025 · period end April 30, 2025 · first reported September 25, 2025 · EPA return-to-compliance field April 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2381	May 7, 2025	Resolving	State Compliance achieved
2377	May 23, 2025	Informal	State Violation/Reminder Notice
2378	May 23, 2025	Informal	State Public Notification requested
2382	June 6, 2025	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7102636 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported June 23, 2025 · EPA return-to-compliance field March 31, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2379	May 23, 2025	Informal	State Public Notification requested
2380	May 23, 2025	Informal	State Formal Notice of Violation issued
2383	July 22, 2025	Resolving	State Compliance achieved
2386	November 20, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 7102634 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2024 · period end November 30, 2024 · first reported March 28, 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
2376	December 19, 2024	Resolving	State Compliance achieved
2372	January 8, 2025	Informal	State Violation/Reminder Notice
2373	January 8, 2025	Informal	State Public Notification requested
2375	January 27, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7102633 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported December 20, 2024 · EPA return-to-compliance field September 30, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2384	October 23, 2024	Resolving	State Compliance achieved
2370	December 17, 2024	Informal	State Violation/Reminder Notice
2371	December 17, 2024	Informal	State Public Notification requested
2374	January 17, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7102632 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported December 20, 2024 · EPA return-to-compliance field September 30, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2384	October 23, 2024	Resolving	State Compliance achieved
2370	December 17, 2024	Informal	State Violation/Reminder Notice
2371	December 17, 2024	Informal	State Public Notification requested
2374	January 17, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7102631 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2366	May 12, 2023	Informal	State Violation/Reminder Notice
2367	May 12, 2023	Informal	State Public Notification requested
2368	June 8, 2023	Informal	State Public Notification received
2369	May 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7102630 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2366	May 12, 2023	Informal	State Violation/Reminder Notice
2367	May 12, 2023	Informal	State Public Notification requested
2368	June 8, 2023	Informal	State Public Notification received
2369	May 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7102629 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported March 27, 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
2363	March 2, 2023	Informal	State Violation/Reminder Notice
2364	March 2, 2023	Informal	State Public Notification requested
2365	March 17, 2023	Informal	State Public Notification received
2369	May 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7102628 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported March 27, 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
2363	March 2, 2023	Informal	State Violation/Reminder Notice
2364	March 2, 2023	Informal	State Public Notification requested
2365	March 17, 2023	Informal	State Public Notification received
2369	May 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 7102627 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start June 1, 2021 · period end June 30, 2021 · first reported March 28, 2022 · EPA return-to-compliance field June 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2359	July 28, 2021	Resolving	State Compliance achieved
2357	August 2, 2021	Informal	State Violation/Reminder Notice
2358	August 2, 2021	Informal	State Public Notification requested
2360	August 12, 2021	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7102626 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 28, 2022 · EPA return-to-compliance field December 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2361	February 3, 2021	Resolving	State Compliance achieved
2353	February 11, 2021	Informal	State Violation/Reminder Notice
2354	February 11, 2021	Informal	State Public Notification requested
2356	May 5, 2021	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7102625 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 28, 2022 · EPA return-to-compliance field December 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2361	February 3, 2021	Resolving	State Compliance achieved
2353	February 11, 2021	Informal	State Violation/Reminder Notice
2354	February 11, 2021	Informal	State Public Notification requested
2356	May 5, 2021	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7102624 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported March 28, 2022 · EPA return-to-compliance field September 30, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2362	October 1, 2020	Resolving	State Compliance achieved
2351	December 22, 2020	Informal	State Public Notification requested
2352	December 22, 2020	Informal	State Formal Notice of Violation issued
2355	February 5, 2021	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7102623 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2020 · period end June 30, 2020 · first reported March 28, 2022 · EPA return-to-compliance field June 30, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2347	August 17, 2020	Formal	State Administrative/Compliance Order with penalty issued
2348	September 18, 2020	Informal	State Public Notification requested
2349	September 18, 2020	Informal	State Formal Notice of Violation issued
2362	October 1, 2020	Resolving	State Compliance achieved
2350	October 16, 2020	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7102622 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2020 · period end March 31, 2020 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2344	June 15, 2020	Informal	State Public Notification requested
2345	June 15, 2020	Informal	State Formal Notice of Violation issued
2346	July 6, 2020	Informal	State Public Notification received
2347	August 17, 2020	Formal	State Administrative/Compliance Order with penalty issued
2362	October 1, 2020	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7102621 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2019 · period end December 31, 2019 · first reported March 28, 2022 · EPA return-to-compliance field December 31, 2019

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2341	February 21, 2020	Informal	State Public Notification requested
2342	February 21, 2020	Informal	State Formal Notice of Violation issued
2343	March 9, 2020	Informal	State Public Notification received
2347	August 17, 2020	Formal	State Administrative/Compliance Order with penalty issued
2362	October 1, 2020	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7102620 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported March 28, 2022 · EPA return-to-compliance field September 30, 2019

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2338	December 6, 2019	Informal	State Public Notification requested
2339	December 6, 2019	Informal	State Formal Notice of Violation issued
2340	January 3, 2020	Informal	State Public Notification received
2347	August 17, 2020	Formal	State Administrative/Compliance Order with penalty issued
2362	October 1, 2020	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7102619 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2019 · period end March 31, 2019 · first reported March 28, 2022 · EPA return-to-compliance field March 31, 2019

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2334	June 5, 2019	Informal	State Public Notification requested
2335	June 5, 2019	Informal	State Formal Notice of Violation issued
2336	June 25, 2019	Informal	State Public Notification received
2337	August 29, 2019	Resolving	State Compliance achieved
2347	August 17, 2020	Formal	State Administrative/Compliance Order with penalty issued

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