Water quality in Katonah, New York
Katonah 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 Post Road Water District Bedford (t) |
1,500 | 0 | 0.9 mi | |
| Harvey School Bedford (t) |
510 | 3 | 1.0 mi | |
| Four Winds Hospital Bedford (t) |
400 | 0 | 1.8 mi | |
| Michelle Estates Lewisboro (t) |
340 | 0 | 2.3 mi | |
| The Farms Water District Bedford (t) |
300 | 0 | 2.9 mi | |
| Goldens Bridge Community Assoc Lewisboro (t) |
250 | 5 | 3.0 mi | |
| Ramleh Water Works Corp. Inc. Mount Kisco (v) |
80 | 0 | 3.2 mi | |
| Wild Oaks Water Company Lewisboro (t) |
805 | 0 | 3.4 mi | |
| Lake Katonah Club INC Bedford (t), Lewisboro (t) |
356 | 0 | 3.4 mi | |
| Candlewood Park Water District North Salem (t) |
125 | 0 | 3.5 mi | |
| Indian Hill Subdivision Lewisboro (t) |
320 | 1 | 3.9 mi | |
| The Paramount at Somers Rehab Center Somers (t) |
400 | 1 | 3.9 mi | |
| Westchester County WD #2 Somers (t) |
0 | 0 | 3.9 mi | |
| Meadows at Cross River Lewisboro (t) |
630 | 0 | 4.0 mi | |
| Bedford Golf and Tennis Club Bedford (t) |
44 | 6 | 4.2 mi | |
| Mount Kisco Water Department Mount Kisco (v) |
11,187 | 1 | 4.3 mi | |
| Arbor Hills Water Works Lewisboro (t) |
180 | 0 | 4.3 mi | |
| Salem Chase North Salem (t) |
175 | 0 | 4.3 mi | |
| Hunt Farm Water Company Lewisboro (t) |
156 | 2 | 4.7 mi | |
| Dykeer Water Co. Somers (t) |
480 | 0 | 4.9 mi | |
| 796 Bedford Road Apartments Bedford (t) |
40 | 0 | 4.9 mi | |
| Cale Farms Water Works Somers (t) |
212 | 0 | 5.0 mi | |
| Somers Chase Water Works Corp Somers (t) |
224 | 0 | 5.0 mi | |
| Lincoln Hall School Somers (t) |
500 | 2 | 5.0 mi | |
| Lewisboro Commons Lewisboro (t) |
168 | 0 | 5.1 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 |
|---|---|---|---|---|
|
40 Deer Park Bedford (t) |
100 | 1 | 0 | |
|
Backdac Realty LLC Bedford (t) |
30 | 0 | 0 | |
|
John Jay Homestead Bedford (t) |
100 | 0 | 0 | |
|
Bedford Professional Building Lewisboro (t) |
40 | 1 | 1 | |
|
One P Way, LLC Somers (t) |
400 | 1 | 0 | |
|
Glen Arbor Golf Club Bedford (t) |
101 | 0 | 0 | |
|
Bedford Community Church Bedford (t) |
250 | 0 | 0 | |
|
Seven-Eleven Store Somers (t) |
900 | 0 | 0 | |
|
Country Childrens Center II (466) Bedford (t) |
100 | 0 | 0 | |
|
Nys Dot Residency Katonah Bedford (t) |
30 | 1 | 1 | |
|
Country Children Center (412) Bedford (t) |
63 | 0 | 0 | |
|
Boro Cafe Lewisboro (t) |
48 | 0 | 0 | |
|
LE Fontane Restaurant Somers (t) |
101 | 1 | 0 | |
|
Caramoor Center for Music Art Bedford (t) |
50 | 0 | 0 | |
|
Muscoot Farm Somers (t) |
150 | 0 | 0 | |
|
North County Shopping Center Lewisboro (t) |
90 | 1 | 0 | |
|
West Patent Elementary School Bedford (t) |
400 | 0 | 0 | |
|
Saint Matthews Episcopal Church Bedford (t) |
100 | 0 | 0 | |
|
Rippowam Cisqua School Bedford Bedford (t) |
425 | 1 | 0 | |
|
Mercedes Benz of Goldens Bridge Lewisboro (t) |
50 | 0 | 0 | |
|
Lasdon Park Somers (t) |
25 | 0 | 0 | |
|
Saint Joseph Church (new) Somers (t) |
1,000 | 0 | 0 | |
|
John F Kennedy High School Somers (t) |
840 | 0 | 0 | |
|
Best Plumbing |
60 | 0 | 0 | |
|
Increase Miller Elementary Sch Lewisboro (t) |
450 | 0 | 0 | |
|
Fox Valley Park Lewisboro (t) |
150 | 0 | 0 | |
|
Reis Park/somers Library Somers (t) |
500 | 0 | 0 | |
|
Mamma Rosa Ristorante Somers (t) |
101 | 0 | 0 | |
|
Yellow Monkey Village Lewisboro (t) |
101 | 0 | 0 | |
|
Mexican Shack Somers (t) |
100 | 0 | 0 | |
|
Rockledge Center Somers (t) |
101 | 0 | 0 | |
|
325 West Patent Road Mount Kisco (v) |
365 | 0 | 0 | |
|
Somers Intermediate School Somers (t) |
673 | 0 | 0 | |
|
IL Forno Restaurant Somers (t) |
150 | 0 | 0 | |
|
Muscoot Restaurant Somers (t) |
120 | 0 | 0 | |
|
White Plains Hospital Somers (t) |
50 | 0 | 0 | |
|
265 Route 202 Somers (t) |
25 | 0 | 0 | |
|
Froggys Deli Somers (t) |
450 | 0 | 0 | |
|
Van Tassel Park Somers (t) |
100 | 0 | 0 | |
|
Chestnut Ridge Racquet Club Bedford (t) |
220 | 1 | 0 | |
|
John Jay Middle School Lewisboro (t) |
945 | 1 | 0 | |
|
John Jay Field House Lewisboro (t) |
100 | 0 | 0 | |
|
Bedford Post Restaurant Bedford (t) |
100 | 0 | 0 | |
|
Chabad of Bedford Bedford (t) |
120 | 1 | 0 | |
|
Temple Shaaray Tefila Bedford (t) |
75 | 0 | 0 | |
|
Cyrus Russell Community Lewisboro (t) |
50 | 1 | 0 | |
|
Unitarian Universalist of N. West Bedford (t) |
50 | 1 | 0 | |
|
Primrose School Somers (t) |
900 | 1 | 0 | |
|
Orchard Square at Cross River Lewisboro (t) |
89 | 1 | 0 | |
|
Bacio Restaurant Lewisboro (t) |
130 | 0 | 0 |
About this data
Water systems are matched to Westchester County, nearest to Katonah 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.