MO5036314 · Missouri

RIVIERA SOUTH WATER CORP

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

Violation records shown: 33
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 33

Counties listed by EPA · Hickory 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 1 resolved record with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 181 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437308 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 25, 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
278215	March 18, 2026	Informal	State Violation/Reminder Notice
278216	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

LSL ReportingViolation 2437307 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end April 16, 2025 · first reported March 28, 2025 · EPA return-to-compliance field April 16, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
278210	March 14, 2025	Informal	State Violation/Reminder Notice
278211	March 14, 2025	Informal	State Public Notification requested
278212	April 16, 2025	Resolving	State Compliance achieved
278219	May 12, 2025	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437339 · Styrene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437338 · Ethylbenzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437337 · Toluene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437336 · Benzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437335 · CHLOROBENZENE · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437334 · Tetrachloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437333 · 1,1,2-Trichloroethane · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437332 · Trichloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437331 · 1,2-Dichloropropane · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437330 · Carbon tetrachloride · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437329 · 1,1,1-Trichloroethane · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437328 · 1,2-Dichloroethane · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437327 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437326 · 1,1-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437325 · Vinyl chloride · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437324 · p-Dichlorobenzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437323 · o-Dichlorobenzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437322 · DICHLOROMETHANE · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437321 · Xylenes, Total · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437320 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437319 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278217	March 18, 2026	Informal	State Violation/Reminder Notice
278218	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437318 · Selenium · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437317 · Thallium, Total · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437316 · Beryllium, Total · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437315 · Antimony, Total · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437314 · Mercury · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437313 · Fluoride · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437312 · Chromium · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437311 · Cadmium · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437310 · Barium · Inorganic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 2437309 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 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
278213	March 18, 2026	Informal	State Violation/Reminder Notice
278214	March 18, 2026	Informal	State Public Notification requested

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