PIONEER WATER SERVICE
Montana — Community Water System — PWSID: MT0004226
System Information
| PWSID | MT0004226 |
| System Name | PIONEER WATER SERVICE |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 21, 2002 |
| Last Reported | Jan 5, 2026 |
Location & Contact
| State | Montana |
| City | BILLINGS |
| ZIP Code | 59101 |
| Address | 5518 HOLIDAY AVE |
| Organization | LORENZ, CHAD A |
| Phone | 406-252-8860 |
Population & Service
| Population Served | 900 |
| Service Connections | 1 |
Drinking Water Violations (42)
This water system has 42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 23, 2025 | Lead and Copper Rule |
| Oct 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 23, 2025 | Lead and Copper Rule |
| Oct 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 23, 2025 | Lead and Copper Rule |
| Dec 30, 2021 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 7, 2022 | Lead and Copper Rule |
| Dec 30, 2021 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 7, 2022 | Lead and Copper Rule |
| Jul 1, 2021 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 22, 2022 | Consumer Confidence Rule |
| Jul 1, 2021 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 22, 2022 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Sep 29, 2020 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Sep 29, 2020 | Consumer Confidence Rule |
| Jul 1, 2019 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 23, 2019 | Consumer Confidence Rule |
| Jul 1, 2019 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 23, 2019 | Consumer Confidence Rule |
| Jun 1, 2018 | Jun 30, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2018 | Revised Total Coliform Rule |
| Jun 1, 2018 | Jun 30, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2018 | Revised Total Coliform Rule |
| Jun 1, 2018 | Jun 30, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2018 | Revised Total Coliform Rule |
| Jun 1, 2018 | Jun 30, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2018 | Revised Total Coliform Rule |
| Jul 1, 2017 | Jul 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | Revised Total Coliform Rule |
| Jul 1, 2017 | Jul 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | Revised Total Coliform Rule |
| Jul 1, 2017 | Jul 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | Revised Total Coliform Rule |
| Oct 1, 2012 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 23, 2012 | Consumer Confidence Rule |
| Oct 1, 2012 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 23, 2012 | Consumer Confidence Rule |
| Jul 1, 2012 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 23, 2012 | Consumer Confidence Rule |
| Jul 1, 2012 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 23, 2012 | Consumer Confidence Rule |
| Jul 1, 2012 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 23, 2012 | Consumer Confidence Rule |
| Sep 1, 2010 | Sep 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | Total Coliform Rule |
| Sep 1, 2010 | Sep 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | Total Coliform Rule |
| Sep 1, 2010 | Sep 30, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Jul 1, 2006 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 22, 2008 | Consumer Confidence Rule |
| Jul 1, 2006 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 22, 2008 | Consumer Confidence Rule |
| Jul 1, 2006 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 22, 2008 | Consumer Confidence Rule |
| Mar 1, 2006 | Mar 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2006 | Total Coliform Rule |
| Mar 1, 2006 | Mar 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2006 | Total Coliform Rule |
| Mar 1, 2006 | Mar 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2006 | Total Coliform Rule |
| Mar 1, 2006 | Mar 31, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2006 | Total Coliform Rule |
| Jul 1, 2005 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 12, 2009 | Consumer Confidence Rule |
| Jul 1, 2005 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 12, 2009 | Consumer Confidence Rule |
| Jan 1, 2004 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 21, 2005 | Lead and Copper Rule |
| Jul 1, 2003 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 21, 2005 | Lead and Copper Rule |
| Jul 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 5, 2004 | Lead and Copper Rule |
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.