MO1010510 · Missouri
MAYSVILLE PWS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 25
- EPA health-based flag
- 17
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 8
Counties listed by EPA · DeKalb 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 17 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 934303 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 934302 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 934301 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 268 May 29, 2026 Informal State Public Notification requested 269 May 29, 2026 Informal State Formal Notice of Violation issued 271 June 16, 2026 Informal State Public Notification received EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 934300 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 266 May 29, 2026 Informal State Public Notification requested 267 May 29, 2026 Informal State Formal Notice of Violation issued 272 June 16, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 934294 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start November 1, 2025 · period end November 30, 2025 · first reported March 25, 2026 · EPA return-to-compliance field November 30, 2025
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 249 December 22, 2025 Informal State Violation/Reminder Notice 250 December 22, 2025 Informal State Public Notification requested 265 January 1, 2026 Resolving State Compliance achieved 253 January 20, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 934293 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start November 1, 2025 · period end November 30, 2025 · first reported March 25, 2026 · EPA return-to-compliance field November 30, 2025
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 247 December 22, 2025 Informal State Violation/Reminder Notice 248 December 22, 2025 Informal State Public Notification requested 265 January 1, 2026 Resolving State Compliance achieved 252 January 20, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 934292 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start November 1, 2025 · period end November 30, 2025 · first reported March 25, 2026 · EPA return-to-compliance field November 30, 2025
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 245 December 22, 2025 Informal State Violation/Reminder Notice 246 December 22, 2025 Informal State Public Notification requested 265 January 1, 2026 Resolving State Compliance achieved 251 January 20, 2026 Informal State Public Notification received EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 934296 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 258 March 9, 2026 Informal State Public Notification requested 259 March 9, 2026 Informal State Formal Notice of Violation issued 263 May 7, 2026 Informal State Public Notification received EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 934295 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 256 March 9, 2026 Informal State Public Notification requested 257 March 9, 2026 Informal State Formal Notice of Violation issued 264 May 7, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 934297 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start August 19, 2025 · period end April 3, 2026 · first reported March 25, 2026 · EPA return-to-compliance field April 3, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 262 April 3, 2026 Resolving State Compliance achieved EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 934291 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2025 · period end September 30, 2025 · first reported December 31, 2025 · EPA return-to-compliance field September 30, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 243 December 11, 2025 Informal State Public Notification requested 244 December 11, 2025 Informal State Formal Notice of Violation issued 254 February 20, 2026 Informal State Public Notification received EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 934290 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2025 · period end September 30, 2025 · first reported December 31, 2025 · EPA return-to-compliance field September 30, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 241 December 11, 2025 Informal State Public Notification requested 242 December 11, 2025 Informal State Formal Notice of Violation issued 255 February 20, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 934288 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start July 1, 2025 · period end July 31, 2025 · first reported December 31, 2025 · EPA return-to-compliance field July 31, 2025
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 231 August 19, 2025 Informal State Violation/Reminder Notice 232 August 19, 2025 Informal State Public Notification requested 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 238 September 22, 2025 Informal State Public Notification received 240 November 13, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 934287 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start July 1, 2025 · period end July 31, 2025 · first reported December 31, 2025 · EPA return-to-compliance field July 31, 2025
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 229 August 19, 2025 Informal State Violation/Reminder Notice 230 August 19, 2025 Informal State Public Notification requested 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 237 September 22, 2025 Informal State Public Notification received 240 November 13, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 934286 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start July 1, 2025 · period end July 31, 2025 · first reported December 31, 2025 · EPA return-to-compliance field July 31, 2025
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 227 August 19, 2025 Informal State Violation/Reminder Notice 228 August 19, 2025 Informal State Public Notification requested 239 September 11, 2025 Formal State Administrative/Compliance Order with penalty issued 236 September 22, 2025 Informal State Public Notification received 240 November 13, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 934284 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance 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 216 December 6, 2024 Informal State Violation/Reminder Notice 217 December 6, 2024 Informal State Public Notification requested 218 December 10, 2024 Informal State Public Notification received 222 December 16, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 934283 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance 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 214 December 3, 2024 Informal State Violation/Reminder Notice 215 December 3, 2024 Informal State Public Notification requested 219 December 10, 2024 Informal State Public Notification received 225 February 11, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 934282 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start October 1, 2024 · period end October 31, 2024 · first reported March 28, 2025 · EPA return-to-compliance field October 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 212 November 21, 2024 Informal State Violation/Reminder Notice 213 November 21, 2024 Informal State Public Notification requested 221 December 19, 2024 Informal State Public Notification received 225 February 11, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Single Turbidity Exceed (Enhanced SWTR)Violation 934276 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start September 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 194 October 10, 2024 Informal State Formal Notice of Violation issued 195 October 10, 2024 Informal State Public Notification requested 210 November 4, 2024 Informal State Public Notification received 225 February 11, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Treatment Technique (SWTR and GWR)Violation 934275 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start September 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 192 October 10, 2024 Informal State Formal Notice of Violation issued 193 October 10, 2024 Informal State Public Notification requested 209 November 4, 2024 Informal State Public Notification received 225 February 11, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 934274 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start September 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 190 October 10, 2024 Informal State Public Notification requested 191 October 10, 2024 Informal State Formal Notice of Violation issued 211 November 4, 2024 Informal State Public Notification received 225 February 11, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 934277 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start August 1, 2024 · period end August 31, 2024 · first reported December 20, 2024 · EPA return-to-compliance field August 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 196 October 10, 2024 Informal State Public Notification requested 197 October 10, 2024 Informal State Formal Notice of Violation issued 205 November 4, 2024 Informal State Public Notification received 225 February 11, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Single Turbidity Exceed (Enhanced SWTR)Violation 934272 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start August 1, 2024 · period end August 31, 2024 · first reported December 20, 2024 · EPA return-to-compliance field August 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 186 August 28, 2024 Informal State Formal Notice of Violation issued 187 August 28, 2024 Informal State Public Notification requested 207 November 4, 2024 Informal State Public Notification received 225 February 11, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Treatment Technique (SWTR and GWR)Violation 934271 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start August 1, 2024 · period end August 31, 2024 · first reported December 20, 2024 · EPA return-to-compliance field August 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 184 August 28, 2024 Informal State Formal Notice of Violation issued 185 August 28, 2024 Informal State Public Notification requested 204 November 4, 2024 Informal State Public Notification received 225 February 11, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 934270 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start December 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 179 January 3, 2023 Informal State Public Notification requested 180 January 3, 2023 Informal State Formal Notice of Violation issued 182 January 23, 2023 Resolving State Compliance achieved 181 February 3, 2023 Informal State Public Notification received
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