| MON | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | Revised Total Coliform Rule | 20260010488 | Known | 01-DEC-2025 | 31-DEC-2025 | No |
| MR | Failure to Conduct Assessment Monitoring | Ground Water Rule | E. COLI | 20260010653 | Known | 01-DEC-2025 | 31-DEC-2025 | No |
| MON | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | Revised Total Coliform Rule | 20250030304 | Known | 01-SEP-2025 | 30-SEP-2025 | No |
| MR | Failure to Conduct Assessment Monitoring | Ground Water Rule | E. COLI | 20250030164 | Known | 01-SEP-2025 | 30-SEP-2025 | No |
| MON | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | Revised Total Coliform Rule | 20250022148 | Known | 01-MAR-2025 | 31-MAR-2025 | No |
| MR | Failure to Conduct Assessment Monitoring | Ground Water Rule | E. COLI | 20250021943 | Known | 01-MAR-2025 | 31-MAR-2025 | No |
| Other | Public Notification Violation for NPDWR Violation | Public Notice Rule and Revised PN Rule | Public Notice | 20190007462 | Open | 01-JUL-2018 | - | No |
| Other | Public Notification Violation for NPDWR Violation | Public Notice Rule and Revised PN Rule | Public Notice | 20190007463 | Open | 01-JUL-2018 | - | No |
| MR | Monitoring and Reporting (DBP) | Stage 2 Disinfectants and Disinfection Byproducts Rule | TTHM | 20170009999 | Returned to Compliance | 01-JAN-2017 | 31-MAR-2017 | No |
| MR | Monitoring and Reporting (DBP) | Stage 2 Disinfectants and Disinfection Byproducts Rule | Total Haloacetic Acids (HAA5) | 20170010034 | Returned to Compliance | 01-JAN-2017 | 31-MAR-2017 | No |
| MR | Failure to Conduct Assessment Monitoring | Ground Water Rule | E. COLI | 20160007083 | Returned to Compliance | 01-SEP-2016 | 30-SEP-2016 | No |
| MON | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | Revised Total Coliform Rule | 20160007008 | Returned to Compliance | 01-SEP-2016 | 30-SEP-2016 | No |
| MR | Failure to Conduct Assessment Monitoring | Ground Water Rule | E. COLI | 20160004598 | Returned to Compliance | 01-APR-2016 | 30-APR-2016 | No |
| MR | Failure to Conduct Assessment Monitoring | Ground Water Rule | E. COLI | 20160003631 | Returned to Compliance | 01-FEB-2016 | 29-FEB-2016 | No |
| MR | Failure to Conduct Assessment Monitoring | Ground Water Rule | E. COLI | 20160003300 | Returned to Compliance | 01-JAN-2016 | 31-JAN-2016 | No |
| Other | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | Consumer Confidence Rule | 20140003959 | Returned to Compliance | 01-JUL-2014 | - | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | TTHM | 20130006089 | Known | 01-APR-2013 | 30-JUN-2013 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Total Haloacetic Acids (HAA5) | 20130006072 | Known | 01-APR-2013 | 30-JUN-2013 | No |
| Other | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | Consumer Confidence Rule | 20110004463 | Returned to Compliance | 01-JUL-2011 | - | No |
| MR | Failure Submit IDSE/Subpart V Plan Rpt | Stage 2 Disinfectants and Disinfection Byproducts Rule | Stage 2 Disinfectants and Disinfection Byproducts Rule | 20120001968 | Returned to Compliance | 02-JUL-2010 | - | No |
| MCL | Maximum Contaminant Level Violation, Monthly (TCR) | Total Coliform Rule | Coliform (TCR) | 20100004365 | Returned to Compliance | 01-APR-2010 | 30-APR-2010 | Yes |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Total Haloacetic Acids (HAA5) | 20090006013 | Returned to Compliance | 01-JUL-2009 | 30-SEP-2009 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | TTHM | 20090006001 | Returned to Compliance | 01-JUL-2009 | 30-SEP-2009 | No |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 20090003741 | Known | 01-APR-2009 | 30-APR-2009 | No |
| MR | Monitoring, Routine (IDSE) | Stage 2 Disinfectants and Disinfection Byproducts Rule | Stage 2 Disinfectants and Disinfection Byproducts Rule | 20120002065 | Returned to Compliance | 02-APR-2008 | - | No |
| Other | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | Consumer Confidence Rule | 20070007513 | Returned to Compliance | 01-JUL-2007 | - | No |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 20070006476 | Known | 01-MAY-2007 | 31-MAY-2007 | No |
| MR | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | Lead and Copper Rule | 20080003226 | Returned to Compliance | 01-JAN-2007 | - | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | Total Haloacetic Acids (HAA5) | 20060000911 | Returned to Compliance | 01-JUL-2005 | 30-SEP-2005 | No |
| MR | Monitoring and Reporting (DBP) | Stage 1 Disinfectants and Disinfection Byproducts Rule | TTHM | 20060000910 | Returned to Compliance | 01-JUL-2005 | 30-SEP-2005 | No |
| MR | Monitoring, Routine Minor (TCR) | Total Coliform Rule | Coliform (TCR) | 0202482 | Known | 01-DEC-2001 | 31-DEC-2001 | No |
| MR | Monitoring, Routine Major (TCR) | Total Coliform Rule | Coliform (TCR) | 95V0002 | Returned to Compliance | 01-DEC-1994 | 31-DEC-1994 | No |
| MR | Monitoring, Regular | Nitrate Rule | Nitrate | 95V0001 | Returned to Compliance | 01-JAN-1994 | 31-DEC-1994 | No |
| MR | Monitoring, Regular | Nitrate Rule | Nitrate | 90V0007 | Returned to Compliance | 01-NOV-1990 | 31-OCT-1993 | No |