COUNTY WATER-SYSTEM LEDGER
Fairfield, Connecticut
EPA’s September 2026 export lists 13 active community water systems serving Fairfield, Connecticut, with 2 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Fairfield, Connecticut
EPA associates 13 covered systems with Fairfield, Connecticut; their reported population-served values total 736,390 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Aquarion-Eastern Fairfield CountyCT0150011 | 351,756 | Surface water | No current violation flagged |
| Aquarion-StamfordCT1350011 | 119,214 | Surface water | No current violation flagged |
| Danbury Water DepartmentCT0340011 | 62,055 | Surface water | No current violation flagged |
| Aquarion-GreenwichCT0570011 | 53,297 | Surface water | No current violation flagged |
| South Norwalk Electric & WaterCT1030021 | 42,000 | Surface water | No current violation flagged |
| Norwalk First Taxing DistrictCT1030011 | 40,256 | Surface water | No current violation flagged |
| Aquarion-DarienCT0350011 | 18,737 | Surface water purchased | No current violation flagged |
| Aquarion-New Milford RegionalCT0960011 | 13,331 | Ground water | No current violation flagged |
| Aquarion-New CanaanCT0900011 | 10,097 | Surface water purchased | No current violation flagged |
| Bethel Water DeptCT0090011 | 9,507 | Surface water | No current violation flagged |
| Aquarion-RidgefieldCT1180011 | 7,476 | Surface water purchased | No current violation flagged |
| Aquarion-Newtown RegionalCT0970011 | 6,054 | Ground water | Other current violation flag |
| Fairfield HillsCT0970021 | 2,610 | Ground water | Current health-based flag |
02 / SOURCE MIX
Primary water sources for Fairfield, Connecticut
EPA classifies 13 systems serving Fairfield, Connecticut across 3 primary-source categories; Surface water is the largest category with 7 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.