Connecticut · population 93,661
Lead pipes in Norwalk, CT
54 lead or galvanized lines to replace
Most of Norwalk (population 93,661) gets its water from South Norwalk Electric & Water. That system reported 19 lead and 35 galvanized-requiring-replacement service lines out of 9,385, with 6,463 more of unknown material.
0.6% of South Norwalk Electric & Water's service lines are lead or galvanized requiring replacement, lower than the Connecticut average (1.6%) and lower than the national average (3.1%).
- Lead 0.2%
- Galvanized (replace) 0.4%
- Unknown 69%
- Non-lead 31%
Latest lead test for South Norwalk Electric & Water (2026): not detected at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for South Norwalk Electric & Water.
Water systems serving Norwalk
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| South Norwalk Electric & WaterMain system | 19 | 35 | 6,463 | 0.6% |
| Aquarion-Eastern Fairfield CountyAlso serves parts of the city | 3,948 | 323 | 63,008 | 3.9% |
| Norwalk First Taxing DistrictAlso serves parts of the city | 91 | 104 | 4,700 | 1.8% |
| Aquarion-DarienAlso serves parts of the city | 20 | 90 | 4,427 | 1.6% |
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 Norwalk
The counts above cover the whole water system. To see whether your line is lead, look up your address on South Norwalk Electric & Water'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 Norwalk, CT have lead pipes?
Yes. South Norwalk Electric & Water, which serves Norwalk, reported 19 lead and 35 galvanized-requiring-replacement service lines, plus 6,463 of unknown material.
Who supplies water to Norwalk?
EPA's service area maps place most of Norwalk in South Norwalk Electric & Water's service area (PWSID CT1030021). Aquarion-Eastern Fairfield County, Norwalk First Taxing District, Aquarion-Darien also serve parts of the city or nearby areas.
How do I check whether my Norwalk home has a lead service line?
Search your address on South Norwalk Electric & Water'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 Norwalk 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 South Norwalk Electric & Water whether your street is scheduled and whether it covers the private side.