New York
Lewis County drinking water quality
67 active public water systems serve 16,454 people in Lewis County. 42 are compliant, 25 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
15 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lowville Village Lowville (v) |
4,000 | 0 | 0 | |
|
Croghan Village Croghan (v) |
900 | 0 | 0 | |
|
Copenhagen Village Copenhagen (v) |
850 | 0 | 0 | |
|
Lyons Falls Village Lyons Falls (v) |
850 | 0 | 0 | |
|
Port Leyden Village Port Leyden (v) |
820 | 1 | 1 | |
|
Beaver Falls Water District Croghan (t), New Bremen (t) |
782 | 0 | 0 | |
|
Harrisville (diana WD 1) Harrisville (v) |
700 | 1 | 0 | |
|
Denmark WD 1 Denmark (t) |
350 | 2 | 0 | |
|
Lowville (t) WD #1 Lowville (t) |
350 | 0 | 0 | |
|
Turin Village Turin (v) |
350 | 0 | 0 | |
|
Castorland Village Castorland (v) |
320 | 0 | 0 | |
|
Constableville Village Constableville (v) |
310 | 3 | 0 | |
|
Martinsburg Water District Martinsburg (t) |
310 | 0 | 0 | |
|
Glenfield Water District Martinsburg (t) |
300 | 0 | 0 | |
|
Watson Town WD 4 Watson (t) |
300 | 0 | 0 |
Non-community systems (52: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (54, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
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 York 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.