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Public Water System
BIG STACK ESTATES
PWSID MT0004682 · Montana · 60 people served
A
ExcellentBIG STACK ESTATES is an EPA-regulated public water system in Montana (PWSID MT0004682). It serves an estimated 60 residents — a rural community of customers — across 1 community across 1 ZIP code.
BIG STACK ESTATES has maintained full EPA Safe Drinking Water Act compliance over the most recent five-year reporting window. No health-based Maximum Contaminant Level (MCL) exceedances are on record. The grade of A reflects this clean compliance history.
Service Area
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Centered on the averaged ZIP-code centroid of 1 ZIP served.
Population
60
Cities
1
ZIPs
1
Violations
0
EPA Health-Based Violations
Health-based Maximum Contaminant Level (MCL) violations on file for BIG STACK ESTATES over the past five years of EPA SDWIS reporting.
✅
No health-based violations in the last 5 years.
BIG STACK ESTATES's water systems have met EPA health-based Maximum Contaminant Level (MCL) requirements throughout the EPA reporting window. This does not mean zero detection of regulated contaminants — it means all measured concentrations remained below their federal action levels.
Cities Served by BIG STACK ESTATES
ZIP Codes Served
About this system
EPA records this system as PWSID MT0004682. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact BIG STACK ESTATES directly or review their annual Consumer Confidence Report (CCR).
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