LOCKWOOD WATER AND SEWER DISTRICT
Montana — Community Water System — PWSID: MT0000156
System Information
| PWSID | MT0000156 |
| System Name | LOCKWOOD WATER AND SEWER DISTRICT |
| System Type | Community Water System |
| Water Source | Surface 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 | BILLINGS |
| ZIP Code | 59101 |
| Address | 1644 OLD HARDIN RD |
| Organization | ARIZTIA, MICHAEL J |
| Phone | 406-259-4120 |
Population & Service
| Population Served | 5,900 |
| Service Connections | 2,049 |
Drinking Water Violations (11)
This water system has 11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2013 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 18, 2013 | Consumer Confidence Rule |
| Jul 1, 2013 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 18, 2013 | Consumer Confidence Rule |
| Jan 1, 2011 | Dec 31, 2013 | Asbestos | MR | No | Yes | — | 7 MFL | — | Archived | Dec 31, 2013 | Inorganic Chemicals |
| Jul 1, 2004 | Sep 30, 2004 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Sep 30, 2004 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Sep 30, 2004 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Sep 30, 2004 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Sep 30, 2004 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2004 | Sep 30, 2004 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2004 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.