There's a mental model most people carry about water quality and wealth: richer towns have better infrastructure. The pipes are newer. The utilities are better funded. The water is safer.
Greenwich, Connecticut has a median household income over $150,000. The median home price is well above $1 million. It is, by almost any measure, one of the most affluent communities in the United States.
It also has more than 1,500 suspected lead service lines.
Why Doesn't Wealth Mean Safe Pipes?
The lead pipe problem in Connecticut — and across the country — is fundamentally a problem of age, not poverty. Lead service lines were standard practice until they were banned in 1986 under the Safe Drinking Water Act amendments. Towns that were built out before 1986 have lead pipes. Towns that were built out after 1986 generally don't.
Greenwich was substantially developed before 1986. So were Westport, Darien, New Canaan, Wilton, and most of the other wealthy Fairfield County suburbs. The houses are old. The pipes are old. The infrastructure was installed when lead was the standard material, and nobody replaced it because it wasn't causing visible problems.
The CT Mirror's 2025 investigation found that while the majority of suspected lead lines are concentrated in lower-income communities — Bridgeport, Waterbury, Willimantic, New London — the wealthy suburbs were not spared. Greenwich's 1,500+ suspected lead lines make it one of the larger concentrations in the state outside of the urban centers.
The Renovation Risk Nobody Talks About
Here's a specific risk that's particularly relevant for Fairfield County homeowners: renovation.
When you renovate a kitchen or bathroom in a pre-1986 home, you disturb the plumbing. Contractors cut pipes, move connections, replace fixtures. That physical disturbance — vibration, pressure changes, the cutting and joining of pipes — can dislodge the scale that has built up on the inside of lead service lines. That scale is the same calcium carbonate coating that partially protects against lead leaching. When it's disturbed, lead leaching spikes.
Studies have documented elevated lead levels in tap water for weeks to months after plumbing work in homes with lead service lines. The renovation that was supposed to improve your home may be temporarily increasing your lead exposure.
If you're doing any plumbing work in a pre-1986 home in Fairfield County, test your water before and after. Run your taps for several minutes before using the water for drinking or cooking in the weeks following the work. And consider a point-of-use filter rated for lead removal at your kitchen tap.
The Corrosion Control Question for Aquarion Customers
Aquarion Water Company, which serves most of Fairfield County, adds corrosion inhibitors to their water. This is the same approach the EPA's Lead and Copper Rule requires utilities across the country to use to reduce lead leaching from old pipes.
The problem is that corrosion control reduces lead leaching but doesn't eliminate it. And Aquarion's water in Fairfield County is groundwater-dependent, which means it's chemically different from surface water. The specific chemistry of the water affects how well corrosion inhibitors work.
What Should You Do If You're in a Pre-1986 Home in Fairfield County?
Want to know if lead is in your water? Enter your ZIP code at CheckYourTap.com to see what's in your tap water — free, in 30 seconds.
The first step is to find out whether your service line is lead. Aquarion has been building a service line inventory as required by the EPA's new Lead and Copper Rule. You can contact Aquarion directly and ask about your specific address.
If your service line is confirmed or suspected lead, a certified NSF/ANSI 53 filter at your kitchen tap is the most immediate protection. These filters are specifically tested and certified to reduce lead at the point of use. They don't require any plumbing work — most attach directly to the faucet or sit under the sink.
For households with young children or pregnant women, this is not optional. Lead causes irreversible neurological damage in children. The CDC confirms there is no safe level of exposure. The filter costs less than a single restaurant dinner. The risk of not using one is permanent.
The $3 million house in Greenwich comes with the same lead service line infrastructure as the $200,000 house in Waterbury's East End. The difference is that Greenwich homeowners have the resources to test and filter. The question is whether they know they need to. And lead pipes are only one concern in pre-1986 homes — lead paint and lead solder create a triple exposure risk that most homeowners aren't aware of.
Keep Reading
- Connecticut Homes Built Before 1978 Have Two Lead Problems. Most Homeowners Only Know About One.
- Bridgeport Has the Same Lead Pipe Problem as Flint. Nobody's Calling It That.
- Connecticut Kids Are Still Being Exposed to Lead at School. Flushing the Pipes Isn't a Solution.
Frequently Asked Questions
Does Greenwich Connecticut have lead in the water?
Greenwich has more than 1,500 suspected lead service lines, according to the CT Mirror's 2025 investigation. Lead service lines were standard until they were banned in 1986, and Greenwich was substantially developed before that date. Lead leaching depends on water chemistry and pipe condition — homes built before 1986 should test their water and use an NSF/ANSI 53 certified filter at the kitchen tap.
Can renovating a home increase lead in tap water?
Yes. When you renovate plumbing in a pre-1986 home with lead service lines, the physical disturbance — cutting pipes, moving connections, vibration — can dislodge the protective scale buildup inside lead pipes. Studies have documented elevated lead levels for weeks to months after plumbing work. Test your water before and after any plumbing renovation, and run taps for several minutes before using water for drinking or cooking.
How do I find out if my home has a lead service line?
Contact your water utility directly and ask about your specific address. Aquarion Water Company has been building a service line inventory as required by the EPA's new Lead and Copper Rule. You can also check the material of the pipe entering your home — lead pipes are dull gray and can be scratched with a key to reveal shiny silver metal underneath. Copper pipes are copper-colored, and galvanized steel pipes are gray but magnetic.
Sources: CT Mirror / Pulitzer Center Lead Pipe Investigation, July 2025; EPA Lead and Copper Rule Revisions, 2024; CT DPH Lead Service Line Inventory; Aquarion Water Company service line inventory program.