Connecticut has a housing problem most residents don't think about in these terms. The state is old. Not charming-old. Structurally old. Approximately 60% of Connecticut homes were built before 1980, and that number says something about what's in the walls, what's in the pipes, and what may be in the water.
Lead paint was banned for residential use in 1978. Lead solder in plumbing was banned in 1986. Lead service lines, the pipes that connect homes to the water main under the street, were never formally banned, and up to 8,000 of them are still in the ground across Connecticut. This shows up all over the state. Waterbury's soft water makes the problem worse, and even Greenwich's wealthiest neighborhoods have over 1,500 suspected lead lines.
In a pre-1978 Connecticut home, you may have all three.
What Are the Three Sources of Lead in Pre-1978 Connecticut Homes?
Lead paint gets the most attention, and for good reason. Deteriorating lead paint produces lead dust, which settles on floors and surfaces and gets swallowed by young children who put their hands in their mouths. The CT DPH has a robust lead paint program, and homeowners tend to understand this risk.
Lead solder gets almost no attention. When copper plumbing was installed before 1986, it was typically joined with solder containing up to 50% lead. That solder is still in millions of Connecticut homes. Water that sits in the pipes overnight, the first draw of the morning, can pull lead out of old solder joints. Soft or slightly acidic water makes it worse.
Lead service lines get attention when there's a news story, then get forgotten. The service line is the pipe that runs from the water main under the street to the shutoff valve inside your house. In homes built before the 1950s, these lines are often lead. In homes built between the 1950s and 1980s, they may be galvanized steel, which can also hold lead deposits from historical contact with lead pipes in the distribution system.
Why the Combination Is Worse Than the Sum
Each of these sources contributes lead to a child's total exposure. The CDC's reference level for blood lead in children is 3.5 micrograms per deciliter, the level at which the agency recommends public health intervention. There is no safe level of lead exposure for children.
The problem with multiple sources in one home is that the exposures add up. A child in a pre-1978 Connecticut home may be getting lead from paint dust, from the morning glass of water (lead solder), and from the water used to make formula or cook food (lead service line). Each source on its own might sit below the level that triggers a specific intervention. Together, they can push blood lead levels above the reference level.
That's the gap in the current public health approach. Lead paint programs and lead water programs operate separately. Nobody is looking at total household lead burden across all sources.
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.
The Renovation Risk, Again
Renovating a pre-1978 home in Connecticut hits both problems at once. Sanding or disturbing lead paint produces lead dust. Cutting or replacing old plumbing disturbs lead solder and can spike lead levels in the water for weeks after the work is done.
If you're renovating a pre-1978 Connecticut home, do both: follow EPA's Renovation, Repair, and Painting (RRP) rule for lead paint, and run your tap for several minutes after any plumbing work, with a certified lead-reduction filter installed at the kitchen tap.
Most renovation contractors know about the RRP rule. Almost none of them mention the water risk. And the lead exposure risks for children don't stop at home, because Connecticut schools have their own lead water problem.
Keep Reading
- Your Waterbury Water Is Soft. That's Actually Why You Should Worry About Lead.
- Greenwich Has 1,500 Suspected Lead Pipes. Wealth Doesn't Buy Better Infrastructure.
- Bridgeport Has the Same Lead Pipe Problem as Flint. Nobody's Calling It That.
Sources: CT DPH Lead Poisoning Prevention Program; EPA Lead and Copper Rule; CT Mirror Lead Service Line Investigation, July 2025; EPA Renovation, Repair, and Painting Rule; CDC Blood Lead Reference Value.
