New York
Delaware County drinking water quality
135 active public water systems serve 31,018 people in Delaware County. 20 are compliant, 115 had at least one EPA violation in the past three years, 3 are designated serious violators, and 6 carry a health flag.
Needs attention
Community water systems
34 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Delhi Village Delhi (v) |
3,833 | 0 | 0 | |
|
Sidney Village Sidney (v) |
3,800 | 2 | 0 | |
|
Walton Village Walton (v) |
3,010 | 1 | 0 | |
|
Stamford Village Stamford (v) |
1,280 | 3 | 0 | |
|
Hancock Village Hancock (v) |
1,182 | 5 | 2 | |
|
Hobart Village Hobart (v) |
700 | 3 | 1 | |
|
Margaretville Village Margaretville (v) |
650 | 4 | 0 | |
|
Downsville Water District Colchester (t) |
617 | 2 | 0 | |
|
Davenport Water District Davenport (t) |
600 | 6 | 2 | |
|
Roxbury Water District Roxbury (t) |
600 | 3 | 0 | |
|
Franklin Village Franklin (v) |
481 | 1 | 0 | |
|
Grand Gorge Water District Roxbury (t) |
480 | 1 | 0 | |
|
Arkville Water District Middletown (t) |
400 | 3 | 1 | |
|
Denver Water District Roxbury (t) |
361 | 2 | 0 | |
|
Fleischmanns Village Fleischmanns (v) |
352 | 2 | 0 | |
|
Bloomville Water District Kortright (t) |
350 | 0 | 0 | |
|
Andes Water District Andes (t) |
260 | 1 | 0 | |
|
Mountainview Mobile Home Park Davenport (t) |
222 | 1 | 0 | |
|
Hamden Water Dist 1 Hamden Hamden (t) |
175 | 2 | 0 | |
|
Walton Country Meadow Park Walton (t) |
165 | 3 | 1 | |
|
Treadwell Water District Franklin (t) |
164 | 1 | 0 | |
|
East Branch Valley Water District Hancock (t) |
160 | 2 | 1 | |
|
Cooks Falls Water District Colchester (t) |
150 | 6 | 2 | |
|
Fishs Eddy Community Water Sup Hancock (t) |
150 | 3 | 1 | |
|
Delhi Rehab Delhi (t) |
144 | 1 | 0 | |
|
Bovina Center Water Dist. NO 1 Bovina (t) |
142 | 3 | 0 | |
|
Hamden Water Dist 2 Delancey Hamden (t) |
136 | 1 | 0 | |
|
Corbett Community Corp. Colchester (t) |
93 | 1 | 0 | |
|
Delhi MHP LLC Delhi (v) |
61 | 6 | 2 | |
|
Leisure Village Delhi (t) |
56 | 0 | 0 | |
|
Barnes Mobile Home Park Sidney (t) |
49 | 3 | 0 | |
|
Halcottsville Water District No. 1 Middletown (t) |
48 | 3 | 1 | |
|
Green Acre Manufactured Home Park Davenport (t) |
40 | 5 | 2 | |
|
Charlotte Creek MHP Davenport (t) |
36 | 1 | 0 |
Non-community systems (101: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (65, 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.