Every morning, before the first students arrive, school custodians in Connecticut are supposed to run the water. All the faucets, all the fountains, for at least thirty seconds each. The goal is to flush out any water that's been sitting in the pipes overnight — water that may have been in contact with lead service lines or lead-containing plumbing fixtures.
This protocol is the EPA's recommended mitigation for lead in school water. It's also, in the words of the engineers who study this problem, a delay. Not a solution.
Does Flushing School Pipes Actually Remove Lead?
The logic behind flushing is sound: lead leaches into water that's been sitting still in contact with lead pipes. Water that's moving through the pipes has less contact time and therefore lower lead concentrations. Flushing the system before use reduces the first-draw lead concentration.
The problem is that flushing is not a guarantee. It depends on consistent execution — in a large school with dozens of fountains and faucets, consistent execution is difficult. It depends on the location of the lead: if the lead is in the service line — the pipe that runs from the street to the building — flushing the internal fixtures doesn't flush the service line. And it doesn't help students who arrive early, or who use a fountain in a remote part of the building that wasn't flushed that morning.
The Waterbury Schools
The CT Mirror's 2025 investigation identified Waterbury's Margaret M. Generali Elementary School and Frank Regan Elementary School among the properties with suspected lead service lines. Both schools predominantly serve students of color in Waterbury's East End — the same neighborhood where Jarvis Parker discovered his home had a suspected lead service line.
The investigation also found a local Boys & Girls Club among the properties with suspected lead lines. The Boys & Girls Club serves children after school — children who may have already been exposed to lead at school during the day.
The EPA's new Lead and Copper Rule requires utilities to inventory their lead service lines and replace them within ten years. Schools are supposed to be prioritized in that replacement schedule. Federal funding is there: $28 million was announced for Connecticut lead pipe replacement in May 2024, with an additional $25 million in October 2024. The question is whether it gets directed to schools and daycares first, as the EPA intends.
Why Is Lead More Dangerous for Children Than Adults?
Lead is a neurotoxin. At any level of exposure, it causes harm. But children are not small adults — they're physiologically different in ways that make lead exposure more dangerous for them.
Children absorb lead at a rate 4-5 times higher than adults. Their brains are still developing, and lead disrupts that development. The effects — reduced IQ, attention deficits, behavioral problems, learning disabilities — are irreversible. There is no treatment that undoes lead's neurological damage. There is only prevention.
The CDC has stated explicitly that there is no safe blood lead level in children. The current reference value — the level at which the CDC recommends public health action — is 3.5 micrograms per deciliter. But research has documented measurable cognitive effects at blood lead levels below 1 microgram per deciliter.
When we talk about lead in school water, we're talking about the most vulnerable population — children whose brains are actively developing — being exposed to a neurotoxin with no safe threshold. Flushing the pipes is not an adequate response to that risk.
What Parents Can Do
You cannot fix the school's pipes. But you can reduce your child's total lead exposure, which matters because lead effects are cumulative.
Filter at home. A certified NSF/ANSI 53 filter at your kitchen tap removes lead from the water your child drinks at home. This doesn't help at school, but it reduces the total exposure burden.
Send water from home. If your child's school has suspected lead pipes, send them with a water bottle filled from your filtered home tap.
Test your home water. If you're in a pre-1986 home in Waterbury or Fairfield County, test your tap water for lead. The school may have lead pipes, but your home might too. In older Connecticut homes, lead paint and lead pipes often coexist — doubling your child's exposure risk.
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.
Talk to the school. Ask specifically whether your school's service line has been inventoried, whether it's suspected lead, and what the flushing protocol is. Schools are required to make this information available.
The pipes in Waterbury's elementary schools were installed before 1986. They've been there for forty years. The children drinking from those fountains today deserve better than a flushing protocol that depends on a custodian remembering to run every faucet every morning.
Frequently Asked Questions
Does flushing school water fountains remove lead?
Flushing reduces first-draw lead concentrations by moving standing water through the pipes, but it's not a guarantee. If lead is in the service line connecting the street to the building, flushing internal fixtures doesn't address the source. It also depends on consistent daily execution across every fountain and faucet in the building.
How much more vulnerable are children to lead in water?
Children absorb lead at 4-5 times the rate of adults, and their developing brains are uniquely susceptible to lead's neurological effects. The CDC has stated there is no safe blood lead level in children, with measurable cognitive effects documented at levels below 1 microgram per deciliter.
What can parents do about lead in Connecticut school water?
Filter water at home using an NSF/ANSI 53 certified filter, send children to school with a filled water bottle from your filtered tap, and ask the school specifically whether its service line has been inventoried for lead. In pre-1986 homes, test your own tap water too — your child may face lead exposure at both school and home.
Keep Reading
- Your Waterbury Water Is Soft. That's Actually Why You Should Worry About Lead.
- Bridgeport Has the Same Lead Pipe Problem as Flint. Nobody's Calling It That.
- Greenwich Has 1,500 Suspected Lead Pipes. Wealth Doesn't Buy Better Infrastructure.
Sources: CT Mirror / Pulitzer Center Lead Pipe Investigation, July 2025; EPA Lead and Copper Rule Revisions, 2024; EPA press release, $28 million for CT lead pipe replacement, May 2024; EPA press release, $25 million for CT, October 2024; CDC Blood Lead Reference Value; CT DPH Lead Prevention Safety for Kids, October 2025.