CITY WATER-SYSTEM LEDGER
Norwalk, Connecticut
EPA’s September 2026 export lists 4 active community water systems serving Norwalk, Connecticut, with 0 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 Norwalk, Connecticut
EPA associates 4 covered systems with Norwalk, Connecticut; their reported population-served values total 452,749 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 |
| 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 |
02 / SOURCE MIX
Primary water sources for Norwalk, Connecticut
EPA classifies 4 systems serving Norwalk, Connecticut across 2 primary-source categories; Surface water is the largest category with 3 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.