Connecticut · population 1,012
Lead pipes in Stonington, CT
22 lead or galvanized lines to replace
Most of Stonington (population 1,012) gets its water from Aquarion-Mystic. That system reported 1 lead and 21 galvanized-requiring-replacement service lines out of 5,285, with 4,756 more of unknown material.
0.4% of Aquarion-Mystic'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 <0.1%
- Galvanized (replace) 0.4%
- Unknown 90%
- Non-lead 9.6%
Latest lead test for Aquarion-Mystic (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 Aquarion-Mystic.
Water systems serving Stonington
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Aquarion-MysticMain system | 1 | 21 | 4,756 | 0.4% |
| CTWC - Shoreline Region-Masons IslandAlso serves parts of the city | 0 | 0 | 120 | 0% |
| Aquarion-Arlington AcresAlso serves parts of the city | 0 | 0 | 148 | 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 Stonington
The counts above cover the whole water system. To see whether your line is lead, look up your address on Aquarion-Mystic'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
- Groton6 lead + galv. lines
- New London529 lead + galv. lines
- Norwich13 lead + galv. lines
- Danielson93 lead + galv. lines
- Middletown257 lead + galv. lines
- Meriden30 lead + galv. lines
- Hartford43 lead + galv. lines
- New Britain170 lead + galv. lines
Check another water system
Questions
Does Stonington, CT have lead pipes?
Yes. Aquarion-Mystic, which serves Stonington, reported 1 lead and 21 galvanized-requiring-replacement service lines, plus 4,756 of unknown material.
Who supplies water to Stonington?
EPA's service area maps place most of Stonington in Aquarion-Mystic's service area (PWSID CT1370011). CTWC - Shoreline Region-Masons Island, Aquarion-Arlington Acres also serve parts of the city or nearby areas.
How do I check whether my Stonington home has a lead service line?
Search your address on Aquarion-Mystic'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 Stonington 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-Mystic whether your street is scheduled and whether it covers the private side.