HERON COMMUNITY WATER SYSTEM
Montana - Community Water System - PWSID: MT0000247
System Information
| PWSID | MT0000247 |
| System Name | HERON COMMUNITY WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Montana |
| City | HERON |
| ZIP Code | 59844 |
| Address | PO BOX 71 |
| Organization | JENSEN, CLINT |
| Phone | 406-847-2333 |
Population & Service
| Population Served | 84 |
| Service Connections | 46 |
Drinking Water Violations (304)
This water system has 304 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 25, 2021 | - | |
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 25, 2021 | - | |
| May 1, 2014 | May 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| Jan 1, 2012 | - | MR | No | No | - | TT | - | Resolved | May 8, 2012 | - | |
| Jan 1, 2012 | - | MR | No | No | - | TT | - | Resolved | May 8, 2012 | - | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 12, 2012 | - | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 12, 2012 | - | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 12, 2012 | - | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 12, 2012 | - | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 12, 2012 | - | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 12, 2012 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Jun 30, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Jan 1, 2008 | Mar 31, 2008 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Mar 31, 2008 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 15, 2008 | - | |
| Oct 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 15, 2008 | - | |
| Oct 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 15, 2008 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 15, 2008 | - | |
| Oct 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 15, 2008 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 15, 2008 | - | |
| Oct 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Jul 15, 2008 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.