How Old Pipes Are Poisoning America's Water

The pipes under America's cities are old — not “needs maintenance” old, but genuinely ancient by infrastructure standards. Between 6 and 10 million lead service lines are still in operation, most installed between 1900 and 1986 when lead pipes were the standard. Chicago alone has an estimated 400,000.[1]

The 2021 Infrastructure Law allocated $15 billion for replacement. At $3,000–$10,000 per line across up to 10 million lines, the math is sobering: the federal investment covers less than a third of the total cost. The rest will take decades to fund.[1]

Every morning when you turn on the tap, the water flowing out has been sitting in contact with your service line for 6–10 hours. Lead doesn’t need to be scraped off the pipe — it dissolves directly into standing water, with concentration building the longer water sits motionless.[2]

Whether that water dissolves a lot of lead or a little depends almost entirely on water chemistry. This is exactly what made Flint so catastrophic: a water source switch that turned protective chemistry into corrosive chemistry overnight.

Flint’s water crisis was caused by a specific technical failure — switching to corrosive water without corrosion control. But the 18 months it took for federal intervention reveals structural flaws in the regulatory system itself, not just a local mistake.[2][3]

The Infrastructure Law’s new requirements give you rights you didn’t have before. You can now ask your utility for a lead service line inventory — and they’re legally required to have one. But don’t wait for replacement: simple, cheap habits and a certified filter provide real protection now.[1]