| MON | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | Revised Total Coliform Rule | 253 | Returned to Compliance | 01-JAN-2022 | 31-JAN-2022 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 254 | Returned to Compliance | 01-JAN-2022 | 31-JAN-2022 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chloramine | 255 | Returned to Compliance | 01-JAN-2022 | 31-MAR-2022 | No |
| MON | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | Revised Total Coliform Rule | 247 | Returned to Compliance | 01-DEC-2021 | 31-DEC-2021 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 249 | Returned to Compliance | 01-DEC-2021 | 31-DEC-2021 | No |
| MON | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | Revised Total Coliform Rule | 246 | Returned to Compliance | 01-NOV-2021 | 30-NOV-2021 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 244 | Returned to Compliance | 01-NOV-2021 | 30-NOV-2021 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chloramine | 245 | Returned to Compliance | 01-OCT-2021 | 31-DEC-2021 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 242 | Returned to Compliance | 01-JUL-2021 | 31-JUL-2021 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chloramine | 243 | Returned to Compliance | 01-JUL-2021 | 30-SEP-2021 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 240 | Returned to Compliance | 01-JUN-2021 | 30-JUN-2021 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 238 | Returned to Compliance | 01-MAY-2021 | 31-MAY-2021 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chloramine | 239 | Returned to Compliance | 01-APR-2021 | 30-JUN-2021 | No |
| MR | Monitoring, Routine Minor (TCR) | Total Coliform Rule | Coliform (TCR) | 231 | Returned to Compliance | 01-JUN-2012 | 30-JUN-2012 | No |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 229 | Returned to Compliance | 01-MAR-2012 | 31-MAR-2012 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chlorine | 213 | Returned to Compliance | 01-APR-2009 | 30-JUN-2009 | No |
| MCL | Maximum Contaminant Level Violation, Monthly (TCR) | Total Coliform Rule | Coliform (TCR) | 209 | Returned to Compliance | 01-DEC-2008 | 31-DEC-2008 | Yes |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 208 | Returned to Compliance | 01-NOV-2007 | 30-NOV-2007 | No |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 108 | Returned to Compliance | 01-OCT-2007 | 31-OCT-2007 | No |