164 active public water systems serve 67,965 people in Lewis and Clark County. 59 are compliant, 105 had at least one EPA violation in the past three years, 4 are designated serious violators, and 6 carry a health flag.
Active systems16456 community systems
People served68Kby public water systems
Systems with violations10564% of active systems, past 3 years
Serious violators46 systems carry a health flag
Needs attention
Green Meadow Country ClubMT0001452 · Helena · Non-Transient non-community system · Serves 4711 rule violated in the past three years. Unresolved: Lead and Copper Rule (LCR).
Kims Marina and ResortMT0002857 · Helena · Transient non-community system · Serves 3003 rules violated in the past three years. Unresolved: E. coli (Escherichia coli) and Revised Total Coliform Rule (RTCR).
Uncle Joes Oasis Bar and GrillMT0001489 · Wolf Creek · Transient non-community system · Serves 1024 rules violated in the past three years. Unresolved: Groundwater Rule (GWR), Public Notification Rule, and Revised Total Coliform Rule (RTCR).
Milford Colony INCMT0001646 · Wolf Creek · Community water system · Serves 677 rules violated in the past three years
T and T SubdivisionMT0004841 · Wolf Creek · Transient non-community system · Serves 5312 rules violated in the past three years. Unresolved: Revised Total Coliform Rule (RTCR).
C Bar N CampMT0002973 · Augusta · Non-Transient non-community system · Serves 1101 rule violated in the past three years. Unresolved: Revised Total Coliform Rule (RTCR).
Living Hope FellowshipMT0004477 · Helena · Transient non-community system · Serves 462 rules violated in the past three years. Unresolved: E. coli (Escherichia coli) and Revised Total Coliform Rule (RTCR).
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Montana records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.
Compliant
Compliant
No violations reported to EPA in the past three years.
At least one violation on record with EPA in the past three years. Many are monitoring or reporting lapses rather than contamination; the system page lists which rules were involved and whether each is still open.
EPA's designation, also called an enforcement priority, for a system with unresolved serious, multiple, or continuing violations. EPA expects the system and its state to act quickly to resolve them.
At least one open health-based violation: an exceedance of a maximum contaminant level or residual disinfectant level, or a treatment technique violation. Monitoring and reporting lapses do not raise this flag.