Greenwich & Stamford (Aquarion) Lead Service Line Replacement Program
Aquarion-Greenwich serves about 53,297 people and reported 1,553 lead and 133 galvanized service lines that must be replaced, out of 17,609 lines, in EPA's Q3 2026 inventory, plus 13,162 lines of unknown material. Here's who pays to replace yours, what it costs, and how to sign up.
Replacement options and cost help
Aquarion Water's Lead Service Line Replacement Program offers several ways to replace a lead line and programs that may lower the customer's cost, and 2026 contracts remove lead and galvanized portions on both the utility and customer sides. Connecticut is receiving $27 million in federal money in 2026 to find and replace lead pipes.
How to get it
- Check Aquarion's online service line inventory and complete the survey at aquarionwater.com/leadsurvey.
- Call Aquarion at 866-728-5023 to ask what your share would be.
- Sign the agreement if your line is scheduled.
Sources: ctpublic.org, app.govly.com
Lead lines in Greenwich & Stamford (Aquarion)
The most recent 90th-percentile lead result EPA lists for this system is 0 parts per billion (2026-01 to 2026-12). Under the new federal rule, the action level drops to 10 ppb in 2027. Galvanized lines count if they ever sat downstream of a lead pipe, because they can hold lead particles. Unknown lines must be identified by the utility, and many turn out to be lead.
How Greenwich & Stamford (Aquarion) compares: it ranks #265 of 7,556 U.S. water systems and #3 of 71 in Connecticut for lead and galvanized lines. 9.6% of its service lines need replacing, compared with 1.7% across Connecticut. See the national ranking.
Source: EPA SDWIS Service Line Inventory, Q3 2026 · Utility phone: 203-926-4320 · PWSID CT0570011
Greenwich & Stamford (Aquarion) lead service line map: check your address
Every water utility had to publish an inventory of its service lines, and most offer an address lookup map. Start with Aquarion-Greenwich's official lead program page, which links to its lookup or explains how to get your line checked. The status will be lead, galvanized requiring replacement, non-lead or unknown. If it's unknown, you can usually check the pipe yourself and send the utility a photo.
Communities and ZIP codes served
Aquarion-Greenwich serves Greenwich, Stamford. If you live in any of these, this program applies to you.
Who pays in Connecticut?
This state has no law we found that decides who pays for the private side of a lead service line, so each utility sets its own policy. Under the federal rule, utilities must replace every lead line and galvanized line that needs it within ten years of November 1, 2027, but the rule does not make utilities pay for the owner's side. Federal infrastructure money passed through the state revolving fund can pay for it, so many utilities offer free or discounted replacement, especially for low-income owners.
The law: Federal Lead and Copper Rule Improvements (40 CFR 141 Subpart I). Mandatory? No state owner mandate found; the federal rule requires most utilities to replace all lead and galvanized-requiring-replacement lines by 2037. Funding: State Drinking Water State Revolving Fund (federal lead service line money).
Sources: epa.gov
Nationwide, EPA's Lead and Copper Rule Improvements require most utilities to replace every lead and galvanized-requiring-replacement line by December 31, 2037, starting November 1, 2027. Utilities must mail a notice every year to each home with a lead, galvanized or unknown line. See the federal timeline.
What would you pay?
Many utility loans are 0% (enter 0). Private loans run higher. Your real price depends on how far the house sits from the street, digging versus trenchless methods, permits and restoration. This is an estimate, not a quote.
Not covered, or can't wait?
Get up to 3 quotes from licensed plumbers who replace service lines in Greenwich & Stamford (Aquarion).
Common questions
Is lead service line replacement free in Greenwich & Stamford (Aquarion)?
Possibly. Aquarion-Greenwich is replacing lead lines, but hasn't published what owners pay. Aquarion Water's Lead Service Line Replacement Program offers several ways to replace a lead line and programs that may lower the customer's cost, and 2026 contracts remove lead and galvanized portions on both the utility and customer sides.
Is lead service line replacement mandatory in Greenwich & Stamford (Aquarion)?
No state owner mandate found; the federal rule requires most utilities to replace all lead and galvanized-requiring-replacement lines by 2037.
How much does it cost to replace a lead service line in Greenwich & Stamford (Aquarion)?
Most private-side replacements cost about $4,000 to $10,000, and long or difficult lines can run higher. Price depends on the distance from the street to your house, whether the contractor digs a trench or pulls the new pipe through (trenchless), permits, and restoring your lawn, sidewalk or basement wall.
How do I know if my home has a lead service line?
Look up your address on Aquarion-Greenwich's service line inventory or check the letter it mailed you. You can also check the pipe where it enters your basement, usually near the meter: lead is dull gray, soft, and turns shiny silver when you scratch it with a key, and a magnet won't stick. Galvanized steel is gray too, but a magnet sticks to it. See our step-by-step guide.
What if I can't afford to replace my lead line?
Ask Aquarion-Greenwich about income-based help first; federal money often makes replacement free for low-income owners. Other options are utility payment plans, 0% city loans, state revolving fund programs, property tax assessments and home improvement loans. Our guide on paying for replacement lists them.
Who owns the water service line?
In most U.S. cities the utility owns the pipe from the water main to the curb stop or property line, and the property owner owns the rest, into the house. Some utilities, including Minneapolis and many in St. Louis County, treat the whole line as the owner's. Federal rules now require utilities to replace the whole lead line, not just their part.
Other Connecticut programs
Fairfield County (Aquarion) ✓New Haven area (Regional Water Authority) ✓Waterbury
Something out of date? Report a change. We recheck program terms at least once a year.