Is Shelton, CT tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for Aquarion-Eastern Fairfield County. 7 PFAS were detected below the limits.
Aquarion-Eastern Fairfield County supplies Shelton (351,756 people).
Water system
Aquarion-Eastern Fairfield County
351,756 people · Surface water · EPA ID CT0150011
Buys treated water from Aquarion-Stamford, Aquarion-Ridgefield, Norwalk First Taxing District.
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA One sample above limit | 1.05 ppt | 4 ppt |
| PFOS One sample above limit | 0 ppt | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 0 ppb at the 90th percentile (Nov 2026, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0
Across Connecticut, 29 of 62 water systems EPA tested had PFAS above a 2024 federal limit, and 1 system were above the lead action level in results from the last five years. Connecticut results.
Shelton homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Shelton city (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Milford 7 mi Regional Water Authority | Above limit | 0 ppb |
| Bridgeport 9 mi Aquarion-Eastern Fairfield County | None above limits | 0 ppb |
| West Haven 9 mi Regional Water Authority | Above limit | 0 ppb |
| New Haven 11 mi Regional Water Authority | Above limit | 0 ppb |
| Naugatuck 13 mi Connecticut Water Company – Naugatuck Region-Central System | None above limits | 0 ppb |
| Waterbury 18 mi Waterbury Water Department | None above limits | 0.05 ppb |
Shelton ZIP codes (1)
- 06484
Questions
Is Shelton tap water safe to drink?
Aquarion-Eastern Fairfield County has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Shelton, CT?
Aquarion-Eastern Fairfield County, which serves 351,756 people.
Does Shelton tap water have PFAS?
Aquarion-Eastern Fairfield County had 7 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.
Do Shelton homes have lead pipes?
Census estimates put 54% of Shelton homes as built before 1980 (Connecticut: 67%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Aquarion-Eastern Fairfield County's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.