Water quality in Chappaqua, New York
Chappaqua is in Westchester County. 273 active public water systems serve the county; 93 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Westchester County
91 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Old Farm Hill Water District Mount Pleasant (t) |
1,768 | 0 | 1.2 mi | |
| Pleasantville Water District Mount Pleasant (t) |
9,550 | 1 | 1.5 mi | |
| Pocantico Hills Water District Mount Pleasant (t) |
329 | 0 | 3.1 mi | |
| North Castle Water District #5 North Castle (t) |
225 | 0 | 3.2 mi | |
| Pace University Mount Pleasant (t) |
2,753 | 1 | 3.3 mi | |
| Kensico Water District Mount Pleasant (t) |
17,917 | 0 | 3.5 mi | |
| Briarcliff Manor Village Briarcliff Manor (v) |
9,190 | 0 | 3.6 mi | |
| North Castle Water District #4 North Castle (t) |
1,225 | 1 | 3.7 mi | |
| Mount Kisco Water Department Mount Kisco (v) |
11,187 | 1 | 3.8 mi | |
| Yeshiva Farm Settlement New Castle (t) |
300 | 2 | 3.9 mi | |
| Bear Ridge Lake Water District Mount Pleasant (t) |
518 | 0 | 3.9 mi | |
| Applehill Farm Water District Mount Pleasant (t) |
209 | 0 | 3.9 mi | |
| Pleasant Ridge Water District Mount Pleasant (t) |
95 | 0 | 3.9 mi | |
| Meadowbrook Water District Mount Pleasant (t) |
91 | 0 | 3.9 mi | |
| Mill River Water District Mount Pleasant (t) |
74 | 0 | 3.9 mi | |
| Pleasantville Road Water District Mount Pleasant (t) |
56 | 0 | 3.9 mi | |
| Pleasantville Extension #1 Mount Pleasant (t) |
49 | 0 | 3.9 mi | |
| Saint Nersess Armenian Seminary North Castle (t) |
32 | 0 | 4.3 mi | |
| Ossining Water Department Ossining (t) |
30,000 | 0 | 4.5 mi | |
| North Castle Water District #2 North Castle (t) |
1,200 | 0 | 4.8 mi | |
| Sunshine Childrens Home & Rehab Center Ossining (t) |
130 | 7 | 5.0 mi | |
| Ramleh Water Works Corp. Inc. Mount Kisco (v) |
80 | 0 | 5.3 mi | |
| Westchester County WD #3 Greenburgh (t) |
6,000 | 1 | 5.4 mi | |
| Khal Adas Kashau Bedford (t) |
650 | 0 | 5.8 mi | |
| 796 Bedford Road Apartments Bedford (t) |
40 | 0 | 6.2 mi |
Non-community systems in Westchester County (181: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Edith Macy Camp of Tomorrow Ossining (t) |
100 | 0 | 0 | |
|
North Castle Pool &tennis Club North Castle (t) |
400 | 0 | 0 | |
|
Northern Westchester 103-105 Bedford (t) |
160 | 0 | 0 | |
|
Travelers Restaurant Yorktown (t) |
150 | 1 | 0 | |
|
Breezemont Day Camp North Castle (t) |
550 | 0 | 0 | |
|
1 Byram Brook Pl. North Castle (t) |
50 | 1 | 0 | |
|
Church of St. Patrick North Castle (t) |
200 | 0 | 0 | |
|
2 Byram Brook Pl. North Castle (t) |
50 | 1 | 0 | |
|
Armonk Fire District #2 North Castle (t) |
60 | 2 | 0 | |
|
North Castle Water District #8 North Castle (t) |
101 | 0 | 0 | |
|
28 Kaysal Court Office Bldg. North Castle (t) |
50 | 1 | 0 | |
|
Nicks Corner Market/pirmar Food Corp. North Castle (t) |
25 | 1 | 0 | |
|
Byram Hills High School North Castle (t) |
973 | 0 | 0 | |
|
Chabad of Bedford Bedford (t) |
120 | 1 | 0 | |
|
Moderne Barn North Castle (t) |
101 | 0 | 0 | |
|
Swiss RE of America |
800 | 1 | 0 | |
|
Unitarian Universalist of N. West Bedford (t) |
50 | 1 | 0 | |
|
Armonk Tennis Club North Castle (t) |
200 | 0 | 0 | |
|
Armonk Alliance Church North Castle (t) |
208 | 0 | 0 | |
|
325 West Patent Road Mount Kisco (v) |
365 | 0 | 0 | |
|
Country Childrens Center Yorktown Yorktown (t) |
79 | 1 | 0 | |
|
Congregation Bnai Israel North Castle (t) |
30 | 0 | 0 | |
|
Citigroup Exec. Planning Center |
40 | 3 | 0 | |
|
Chestnut Ridge Racquet Club Bedford (t) |
220 | 1 | 0 | |
|
Fox Lane High & Middle Schools Mount Kisco (v) |
3,000 | 0 | 0 | |
|
Church of Jesus Christ Lds Ossining (t) |
300 | 0 | 0 | |
|
Kingdom Hall of Jehovahs Wit Ossining (t) |
125 | 1 | 0 | |
|
Nadines Restaurant Yorktown (t) |
80 | 1 | 0 | |
|
Temple Shaaray Tefila Bedford (t) |
75 | 0 | 0 | |
|
Cranberry Lake North Castle (t) |
250 | 1 | 0 | |
|
Teatown Lake Reservation Cortlandt (t), Yorktown (t) |
100 | 1 | 0 | |
|
West Patent Elementary School Bedford (t) |
400 | 0 | 0 | |
|
Bedford Rest Area Nys RT 684 Bedford (t) |
1,000 | 2 | 0 | |
|
Bedford Community Church Bedford (t) |
250 | 0 | 0 | |
|
LA Cremaillere North Castle (t) |
100 | 1 | 0 | |
|
Bedford Village Plaza Bedford (t) |
100 | 1 | 0 | |
|
Grand Slam Banksville North Castle (t) |
100 | 1 | 0 | |
|
Finch Country Store |
25 | 1 | 0 | |
|
Glen Arbor Golf Club Bedford (t) |
101 | 0 | 0 | |
|
Young Judaea Sprout Westchester Cortlandt (t) |
120 | 1 | 0 | |
|
Rippowam Cisqua School Bedford Bedford (t) |
425 | 1 | 0 | |
|
Saint Matthews Episcopal Church Bedford (t) |
100 | 0 | 0 | |
|
Muscoot Farm Somers (t) |
150 | 0 | 0 | |
|
Nys Dot Residency Katonah Bedford (t) |
30 | 1 | 1 | |
|
Lasdon Park Somers (t) |
25 | 0 | 0 | |
|
Bedford Post Restaurant Bedford (t) |
100 | 0 | 0 | |
|
Caramoor Center for Music Art Bedford (t) |
50 | 0 | 0 | |
|
John Jay Homestead Bedford (t) |
100 | 0 | 0 | |
|
40 Deer Park Bedford (t) |
100 | 1 | 0 | |
|
Seven-Eleven Store Somers (t) |
900 | 0 | 0 |
About this data
Water systems are matched to Westchester County, nearest to Chappaqua first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files or the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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.