SHERIDAN TOWN OF
Montana — Community Water System — PWSID: MT0000329
System Information
| PWSID | MT0000329 |
| System Name | SHERIDAN TOWN OF |
| 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 | Jan 5, 2026 |
Location & Contact
| State | Montana |
| City | SHERIDAN |
| ZIP Code | 59749 |
| Address | PO BOX 78 |
| Organization | MILLHOUSE, KRISTI |
| Phone | 406-842-5431 |
Population & Service
| Population Served | 632 |
| Service Connections | 413 |
Drinking Water Violations (120)
This water system has 120 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, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 18, 2025 | Lead and Copper Rule |
| Dec 30, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 18, 2025 | Lead and Copper Rule |
| Mar 1, 2017 | Mar 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Mar 31, 2017 | Revised Total Coliform Rule |
| Mar 1, 2017 | Mar 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Mar 31, 2017 | Revised Total Coliform Rule |
| Mar 1, 2017 | Mar 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Mar 31, 2017 | Revised Total Coliform Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 6, 2014 | Consumer Confidence Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 6, 2014 | Consumer Confidence Rule |
| Jan 1, 2014 | Mar 31, 2014 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2014 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2014 | Mar 31, 2014 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2014 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2014 | Mar 31, 2014 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2014 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 1, 2016 | Lead and Copper Rule |
| Jan 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 1, 2016 | Lead and Copper Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Dec 31, 2013 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2013 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 19, 2013 | Consumer Confidence Rule |
| Jul 1, 2013 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 19, 2013 | Consumer Confidence Rule |
| Jan 1, 2011 | Dec 31, 2013 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Barium | MR | No | Yes | — | 2 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Barium | MR | No | Yes | — | 2 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Barium | MR | No | Yes | — | 2 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Mercury | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Mercury | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Mercury | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Jan 1, 2011 | Dec 31, 2013 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Oct 23, 2013 | Inorganic Chemicals |
| Oct 1, 2010 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 25, 2013 | Lead and Copper Rule |
| Oct 1, 2010 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 25, 2013 | Lead and Copper Rule |
| Oct 1, 2010 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 25, 2013 | Lead and Copper Rule |
| Jan 1, 2010 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jul 19, 2018 | Lead and Copper Rule |
| Jan 1, 2010 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jul 19, 2018 | Lead and Copper Rule |
| Jan 1, 2009 | Dec 31, 2009 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts 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.