Connecticut · population 139,134
Lead pipes in Stamford, CT
4,271 lead or galvanized lines to replace
Most of Stamford (population 139,134) gets its water from Aquarion-Eastern Fairfield County. That system reported 3,948 lead and 323 galvanized-requiring-replacement service lines out of 109,655, with 63,008 more of unknown material.
3.9% of Aquarion-Eastern Fairfield County's service lines are lead or galvanized requiring replacement, higher than the Connecticut average (1.6%) and higher than the national average (3.1%).
- Lead 3.6%
- Galvanized (replace) 0.3%
- Unknown 57%
- Non-lead 39%
Latest lead test for Aquarion-Eastern Fairfield County (2026): not detected at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists 2 Lead and Copper Rule violations since 2015 for Aquarion-Eastern Fairfield County.
Water systems serving Stamford
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Aquarion-Eastern Fairfield CountyMain system | 3,948 | 323 | 63,008 | 3.9% |
| Aquarion-GreenwichAlso serves parts of the city | 1,553 | 133 | 13,162 | 9.6% |
| Aquarion-StamfordAlso serves parts of the city | 4 | 112 | 15,227 | 0.5% |
| Aquarion-DarienAlso serves parts of the city | 20 | 90 | 4,427 | 1.6% |
| Aquarion-New CanaanAlso serves parts of the city | 5 | 35 | 3,297 | 1.0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Stamford
The counts above cover the whole water system. To see whether your line is lead, look up your address on Aquarion-Eastern Fairfield County's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
Check another water system
Questions
Does Stamford, CT have lead pipes?
Yes. Aquarion-Eastern Fairfield County, which serves Stamford, reported 3,948 lead and 323 galvanized-requiring-replacement service lines, plus 63,008 of unknown material.
Who supplies water to Stamford?
EPA's service area maps place most of Stamford in Aquarion-Eastern Fairfield County's service area (PWSID CT0150011). Aquarion-Greenwich, Aquarion-Stamford, Aquarion-Darien, Aquarion-New Canaan also serve parts of the city or nearby areas.
How do I check whether my Stamford home has a lead service line?
Search your address on Aquarion-Eastern Fairfield County's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Stamford be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Aquarion-Eastern Fairfield County whether your street is scheduled and whether it covers the private side.