| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 6346 | Known | 01-JUN-2025 | 30-JUN-2025 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 6345 | Known | 01-MAY-2025 | 31-MAY-2025 | No |
| MCL | Maximum Contaminant Level Violation, Average | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 6342 | Returned to Compliance | 01-APR-2024 | 30-JUN-2024 | Yes |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 6341 | Returned to Compliance | 01-APR-2024 | 30-APR-2024 | No |
| MCL | Maximum Contaminant Level Violation, Average | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 6339 | Returned to Compliance | 01-JAN-2024 | 31-MAR-2024 | Yes |
| MR | Failure Submit IDSE/Subpart V Plan Rpt | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 6338 | Returned to Compliance | 12-DEC-2023 | - | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 6333 | Returned to Compliance | 01-JUN-2023 | 30-JUN-2023 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chlorine | 6336 | Returned to Compliance | 01-APR-2023 | 30-JUN-2023 | No |
| MCL | Maximum Contaminant Level Violation, Average | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 6331 | Returned to Compliance | 01-APR-2022 | 30-JUN-2022 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 6328 | Returned to Compliance | 01-JAN-2022 | 31-MAR-2022 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 6327 | Returned to Compliance | 01-OCT-2021 | 31-DEC-2021 | Yes |
| MR | Water Quality Parameter M/R | Lead and Copper Rule | Lead and Copper Rule | 6326 | Returned to Compliance | 01-JUL-2020 | 31-DEC-2020 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 6321 | Returned to Compliance | 01-MAR-2020 | 31-MAR-2020 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chlorine | 6322 | Returned to Compliance | 01-JAN-2020 | 31-MAR-2020 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chlorine | 6323 | Returned to Compliance | 01-JAN-2020 | 31-MAR-2020 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chlorine | 6324 | Returned to Compliance | 01-JAN-2020 | 31-MAR-2020 | No |
| MR | Water Quality Parameter M/R | Lead and Copper Rule | Lead and Copper Rule | 6325 | Returned to Compliance | 01-JAN-2020 | 30-JUN-2020 | No |
| MR | Failure Submit IDSE/Subpart V Plan Rpt | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 6320 | Returned to Compliance | 05-MAR-2019 | - | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 6318 | Returned to Compliance | 01-JAN-2016 | 31-JAN-2016 | No |
| MCL | Maximum Contaminant Level Violation, Average | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 6317 | Returned to Compliance | 01-OCT-2015 | 31-DEC-2015 | Yes |
| MCL | Maximum Contaminant Level Violation, Monthly (TCR) | Total Coliform Rule | Coliform (TCR) | 6316 | Returned to Compliance | 01-SEP-2015 | 30-SEP-2015 | Yes |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 6315 | Returned to Compliance | 01-FEB-2015 | 28-FEB-2015 | No |
| MR | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | Surface Water Treatment Rule | 6311 | Returned to Compliance | 01-MAR-2014 | 31-MAR-2014 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Chlorine | 6313 | Returned to Compliance | 01-JAN-2014 | 31-MAR-2014 | No |
| MCL | Maximum Contaminant Level Violation, Monthly (TCR) | Total Coliform Rule | Coliform (TCR) | 6209 | Returned to Compliance | 01-AUG-2009 | 31-AUG-2009 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Stage 1 Disinfectants and Disinfection Byproducts Rule | TTHM | 4503 | Known | 01-JAN-2002 | 31-DEC-2002 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 4303 | Returned to Compliance | 01-OCT-2001 | 30-SEP-2002 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 4202 | Returned to Compliance | 01-JUL-2001 | 30-JUN-2002 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 3901 | Returned to Compliance | 01-OCT-2000 | 31-DEC-2000 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 3701 | Returned to Compliance | 01-JUL-2000 | 30-SEP-2000 | Yes |
| MCL | Maximum Contaminant Level Violation, Acute (TCR) | Total Coliform Rule | Coliform (TCR) | 3400 | Returned to Compliance | 01-SEP-1999 | 30-SEP-1999 | Yes |
| MCL | Maximum Contaminant Level Violation, Monthly (TCR) | Total Coliform Rule | Coliform (TCR) | 3300 | Returned to Compliance | 01-SEP-1999 | 30-SEP-1999 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 3299 | Returned to Compliance | 01-APR-1999 | 30-JUN-1999 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 3199 | Returned to Compliance | 01-JAN-1999 | 31-MAR-1999 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 3500 | Returned to Compliance | 01-OCT-1998 | 30-SEP-1999 | Yes |
| MCL | Maximum Contaminant Level Violation, Acute (TCR) | Total Coliform Rule | Coliform (TCR) | 2996 | Returned to Compliance | 01-NOV-1995 | 30-NOV-1995 | Yes |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 2392 | Known | 01-SEP-1991 | 30-SEP-1991 | No |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 2291 | Known | 01-APR-1991 | 30-APR-1991 | No |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 2191 | Known | 01-FEB-1991 | 28-FEB-1991 | No |
| MR | Monitoring, Regular | Arsenic Rule | Arsenic | 1291 | Known | 01-JUN-1989 | 31-MAY-1990 | No |
| MR | Monitoring, Regular | Inorganic Chemicals | Chromium | 1391 | Known | 01-JUN-1989 | 31-MAY-1990 | No |
| MR | Monitoring, Regular | Inorganic Chemicals | Selenium | 1591 | Known | 01-JUN-1989 | 31-MAY-1990 | No |
| MR | Monitoring, Regular | Nitrate Rule | Nitrate | 2693 | Known | 01-JUN-1989 | 31-MAY-1990 | No |
| MR | Monitoring, Regular | Inorganic Chemicals | Mercury | 1791 | Known | 01-JUN-1989 | 31-MAY-1990 | No |
| MR | Monitoring, Regular | Inorganic Chemicals | Fluoride | 1891 | Known | 01-JUN-1989 | 31-MAY-1990 | No |
| MR | Monitoring, Regular | Inorganic Chemicals | Cadmium | 2091 | Known | 01-JUN-1989 | 31-MAY-1990 | No |
| MR | Monitoring, Regular | Inorganic Chemicals | Barium | 1991 | Known | 01-JUN-1989 | 31-MAY-1990 | No |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 488 | Returned to Compliance | 01-APR-1988 | 31-MAR-1989 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 186 | Returned to Compliance | 01-JUL-1985 | 30-SEP-1985 | Yes |
| MCL | Maximum Contaminant Level Violation, Average | Former Total Trihalomethane Rule | TTHM | 2492 | Returned to Compliance | 01-APR-1985 | 30-JUN-1985 | Yes |