Public water system · 083090010
ActiveSt Mary Koa
Transient non-community water system in Montana, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
700
Service connections
211
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-05-01 | 2D | 8000 | Yes | Resolved |
| 2013-07-01 | 23 | 3100 | No | Resolved |
| 2012-04-01 | 23 | 3100 | No | Resolved |
St Mary Koa: frequently asked questions
Is St Mary Koa's water safe to drink?
St Mary Koa is an active transient non-community water system regulated under the Safe Drinking Water Act, overseen by the EPA Region 08. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs St Mary Koa?
St Mary Koa (PWSID 083090010) is a native american-owned transient non-community water system, regulated by the EPA Region 08.
How many people does St Mary Koa serve?
St Mary Koa reports serving 700 people through 211 service connections in Montana.
Where does St Mary Koa get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in Montana
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| New York City System | Richmond | 8,271,000 | Community | Surface water |
| Los Angeles-City, Dept. of Water & Power | Los Angeles | 7,751,132 | Community | Surface water |
| City of Houston | Harris | 2,970,543 | Community | Surface water |
| Chicago | Cook | 2,746,388 | Community | Surface water |
| MWRA | Suffolk | 2,660,000 | Community | Surface water |
| Mdwasa - Main System | Miami-Dade | 2,377,460 | Community | Groundwater |