Water quality in Knollcrest, Connecticut
Knollcrest is in Fairfield County. 336 active public water systems serve the county; 249 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 Fairfield County
60 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Knollcrest Tax District New Fairfield |
356 | 5 | 0.1 mi | |
| Candlewood Knolls Water Authority New Fairfield |
524 | 1 | 1.5 mi | |
| Candlewood Shores Tax District Brookfield, New Fairfield |
1,315 | 2 | 2.2 mi | |
| Woodcreek Village Condominium Assn, INC Brookfield |
72 | 5 | 2.3 mi | |
| Aquarion-New Fairfield New Fairfield |
406 | 1 | 2.3 mi | |
| Aquarion-Hickory Hills Brookfield |
132 | 0 | 2.4 mi | |
| Aquarion-Birches New Fairfield |
66 | 0 | 2.5 mi | |
| Arrowhead Point Homeowners Assn Inc. Brookfield, New Fairfield |
296 | 0 | 2.7 mi | |
| Candlewood Orchards Property Owners Corp Brookfield, New Fairfield |
144 | 3 | 2.8 mi | |
| Brookfield Housing Authority Brookfield |
37 | 5 | 2.8 mi | |
| Aquarion-Timber Trails New Fairfield, Sherman |
310 | 0 | 2.8 mi | |
| Aquarion-Possum Ridge New Fairfield |
307 | 0 | 3.0 mi | |
| Aquarion-Oakwood Acres New Fairfield |
286 | 1 | 3.0 mi | |
| Hawthorne Terrace Assoc Danbury |
156 | 1 | 3.4 mi | |
| Cedar Terrace Prop Owners Assn Danbury |
66 | 3 | 3.6 mi | |
| 39 Hop Brook RD Apt Complex Brookfield |
36 | 2 | 3.8 mi | |
| Aquarion-New Milford Regional Brookfield, New Milford |
13,331 | 4 | 3.9 mi | |
| Aquarion-Hollandale Estates Danbury |
200 | 0 | 4.0 mi | |
| Aqua Vista Assoc, INC Danbury |
388 | 0 | 4.1 mi | |
| Snug Harbor Development Corp Danbury |
144 | 2 | 4.2 mi | |
| Aquarion-Ball Pond New Fairfield |
629 | 0 | 4.3 mi | |
| Lake Lillinonah Shores Condos Brookfield |
130 | 2 | 4.8 mi | |
| Aquarion-Indian Spring Danbury |
242 | 0 | 5.0 mi | |
| Aquarion-Fieldstone Ridge Danbury, New Fairfield |
84 | 0 | 5.4 mi | |
| Cornell Hills Assoc, INC Danbury |
108 | 3 | 5.4 mi |
Non-community systems in Fairfield County (275: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Fairfield County, nearest to Knollcrest 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 place files or the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision 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 Connecticut 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.