269 active public water systems serve 106,381 people in Grafton County. 152 are compliant, 117 had at least one EPA violation in the past three years, 3 are designated serious violators, and 2 carry a health flag.
Active systems26974 community systems
People served106Kby public water systems
Systems with violations11743% of active systems, past 3 years
Serious violators32 systems carry a health flag
Needs attention
Enfield Water DeptNH0751010 · Enfield · Community water system · Serves 1,3452 rules violated in the past three years
Whaleback MountainNH0757020 · Enfield · Transient non-community system · Serves 5003 rules violated in the past three years. Unresolved: Revised Total Coliform Rule.
Bobcat Country GrillNH1948040 · Plymouth · Transient non-community system · Serves 1003 rules violated in the past three years. Unresolved: Revised Total Coliform Rule, Ground Water Rule, and Public Notice Rule and Revised PN Rule.
W Valley Ski Area SchwendiNH2447040 · Waterville Valley · Transient non-community system · Serves 4001 rule violated in the past three years. Unresolved: Ground Water Rule.
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 New Hampshire 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.
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.