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 a problem of age rather than poverty. Lead service lines were standard practice until they were banned in 1986 under the Safe Drinking Water Act amendments. Towns built out before 1986 have lead pipes. Towns 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 most suspected lead lines sit in lower-income communities: Bridgeport, Waterbury, Willimantic, New London. But the wealthy suburbs weren't spared. Greenwich's 1,500+ suspected lead lines make it one of the larger concentrations in the state outside the cities.
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. All that vibration, pressure change, and cutting can knock loose the scale built up inside lead service lines. That scale is a mineral coating that partly shields the water from the lead underneath. Disturb it, and 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 ZIP-level context before deciding whether to test? Enter your ZIP code at CheckYourTap.com to see available public-system or regional monitoring records associated with the ZIP. This is not a test of a tap, well, or property. Free, in 30 seconds.
Prefer the local picture first? See what's been detected in Greenwich's water supply, contaminant by contaminant.
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 fastest protection. These filters are tested and certified to reduce lead at the point of use. No plumbing work needed. Most attach to the faucet or sit under the sink.
For households with young children or pregnant women, this isn't optional. Lead causes permanent brain and nervous system damage in children, and the CDC confirms there is no safe level of exposure. The filter costs less than a restaurant dinner. The harm from skipping it doesn't reverse.
The $3 million house in Greenwich sits on the same lead service line infrastructure as the $200,000 house in Waterbury's East End. Greenwich homeowners just have the resources to test and filter. Whether they know they need to is another matter. Lead pipes are also only one worry in a pre-1986 home: lead paint and lead solder create a triple exposure risk that most homeowners never hear about.
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.
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.
