Water quality in Danbury, Connecticut
Danbury 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 |
|---|---|---|---|---|
| Danbury Water Department Bethel, Brookfield, Danbury and 1 more |
62,055 | 0 | 0.7 mi | |
| Cornell Hills Assoc, INC Danbury |
108 | 3 | 1.1 mi | |
| Aquarion-Rolling Ridge Danbury |
115 | 0 | 1.6 mi | |
| Aquarion-Pearce Manor Danbury |
133 | 0 | 1.6 mi | |
| Aquarion-Hollandale Estates Danbury |
200 | 0 | 2.3 mi | |
| Aquarion-Indian Spring Danbury |
242 | 0 | 2.3 mi | |
| Snug Harbor Development Corp Danbury |
144 | 2 | 2.3 mi | |
| Aqua Vista Assoc, INC Danbury |
388 | 0 | 2.5 mi | |
| Aquarion-Ken Oaks Danbury |
152 | 0 | 2.7 mi | |
| Shady Acres Mobile Home Park Danbury |
117 | 1 | 3.2 mi | |
| Aquarion-Possum Ridge New Fairfield |
307 | 0 | 3.3 mi | |
| Cedar Terrace Prop Owners Assn Danbury |
66 | 3 | 3.3 mi | |
| Aquarion-Berkshire Bethel |
75 | 0 | 3.7 mi | |
| Aquarion-Birches New Fairfield |
66 | 0 | 3.8 mi | |
| Hawthorne Terrace Assoc Danbury |
156 | 1 | 3.9 mi | |
| Aquarion-Fieldstone Ridge Danbury, New Fairfield |
84 | 0 | 4.0 mi | |
| Brookfield Hills Condominium Unit Owners Brookfield |
144 | 3 | 4.1 mi | |
| Bethel Water Dept Bethel, Danbury |
9,507 | 6 | 4.1 mi | |
| Aquarion-McKeon Ridgefield |
67 | 0 | 4.1 mi | |
| Lake Waubeeka Association Danbury |
712 | 0 | 4.2 mi | |
| Aquarion-Oakwood Acres New Fairfield |
286 | 1 | 4.2 mi | |
| Aquarion-Scodon Ridgefield |
130 | 0 | 4.3 mi | |
| Stony Hill Village Condominium Assn Brookfield |
392 | 4 | 4.3 mi | |
| Aquarion-Ball Pond New Fairfield |
629 | 0 | 4.3 mi | |
| Arrowhead Point Homeowners Assn Inc. Brookfield, New Fairfield |
296 | 0 | 4.3 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 Danbury 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.