| MCL | Maximum Contaminant Level Violation, Average | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 1051 | Returned to Compliance | 01-JUL-2017 | 30-SEP-2017 | Yes |
| Other | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | Consumer Confidence Rule | 1052 | Returned to Compliance | 01-JUL-2017 | - | No |
| MCL | Maximum Contaminant Level Violation, Average | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 1050 | Known | 01-JUL-2015 | 30-SEP-2015 | Yes |
| MR | Failure Submit Filter Profile/CPE Report | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 1049 | Returned to Compliance | 01-FEB-2014 | - | No |
| MR | Failure Submit Filter Profile/CPE Report | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 1048 | Returned to Compliance | 01-JAN-2014 | - | No |
| MR | Failure Submit Filter Profile/CPE Report | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 1047 | Open | 01-DEC-2013 | - | No |
| MR | Failure Submit Filter Profile/CPE Report | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 1046 | Open | 01-OCT-2013 | - | No |
| MR | Failure Submit Filter Profile/CPE Report | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 1045 | Open | 01-SEP-2013 | - | No |
| MR | Failure Submit Filter Profile/CPE Report | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 1044 | Open | 01-APR-2013 | - | No |
| Other | Public Notification Violation for NPDWR Violation | Public Notice Rule and Revised PN Rule | Public Notice | 1041 | Open | 14-MAR-2013 | - | No |
| MR | Failure Submit Filter Profile/CPE Report | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 1043 | Open | 01-MAR-2013 | - | No |
| MR | Failure Submit Filter Profile/CPE Report | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 1042 | Open | 01-JAN-2013 | - | No |
| TT | Treatment Technique (SWTR and GWR) | Surface Water Treatment Rule | Surface Water Treatment Rule | 1040 | Known | 01-DEC-2012 | 31-DEC-2012 | Yes |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | TTHM | 1039 | Returned to Compliance | 01-JUL-2010 | 30-SEP-2010 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Total Haloacetic Acids (HAA5) | 1038 | Returned to Compliance | 01-JUL-2010 | 30-SEP-2010 | No |
| MR | Monitoring, Routine (IDSE) | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 1035 | Returned to Compliance | 01-APR-2009 | 30-JUN-2009 | No |
| MR | Monitoring, Routine (IDSE) | Stage 2 Disinfectants and Disinfection Byproducts Rule | Total Haloacetic Acids (HAA5) | 1034 | Returned to Compliance | 01-APR-2009 | 30-JUN-2009 | No |
| MR | Monitoring, Source Water (LT2) | Long Term 2 Enhanced Surface Water Treatment Rule | Long Term 2 Enhanced Surface Water Treatment Rule | 2 | Returned to Compliance | 01-JUL-2008 | - | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Total Haloacetic Acids (HAA5) | 1016 | Returned to Compliance | 01-JUL-2006 | 30-SEP-2006 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | TTHM | 1033 | Returned to Compliance | 01-JUL-2006 | 30-SEP-2006 | No |
| MR | Monitoring, Turbidity (Enhanced SWTR) | Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Interim Enhanced Surface Water Treatment Rule | 823 | Returned to Compliance | 01-JUN-2005 | 30-JUN-2005 | No |
| TT | Treatment Technique (SWTR and GWR) | Surface Water Treatment Rule | Surface Water Treatment Rule | 9604761 | Known | 01-SEP-1996 | 30-SEP-1996 | Yes |
| MR | Monitoring, Routine Minor (TCR) | Total Coliform Rule | Coliform (TCR) | 9001006 | Known | 01-AUG-1990 | 31-AUG-1990 | No |