Lead pipes in Pennsylvania

Pennsylvania top concern

Radon, lead pipes (older cities)

Pennsylvania has Zone 1 radon across most of the state. LCRR lead-service-line obligations in Philadelphia, Pittsburgh, Reading, Allentown, Erie. EPA SDWIS small-system compliance varies.

See Pennsylvania state page for the full state-level rollup across all 12 dimensions.

Read more on lead pipes

Editorial deep-dives explaining the source data, its limits, and how to read it.

EPA Radon Zones — what 1, 2, and 3 mean and when you should test
EPA classifies every US county into Zone 1 (high), Zone 2 (moderate), or Zone 3 (low) for radon. Plain-English guide to the classifications and at-home testing.
Lead and Copper Rule 2024 — the federal lead-pipe inventory mandate
The 2024 Lead and Copper Rule Revisions (LCRR) require every US community water system to inventory and report lead service lines. Plain-English guide.
EPA SDWIS — how to read drinking-water violations and what they actually mean
Plain-English guide to EPA SDWIS drinking-water violations: health-based vs. monitoring vs. reporting violations, MCLs, and what triggers a public notice.
Radon and real estate — what disclosure laws and home tests actually require
What home sellers must disclose about radon by state, when home tests are required, and how to interpret radon-mitigation systems if a home you're buying has one.

Lead pipes in Pennsylvania

What lands here

Source & refresh

Radon, lead pipes (older cities)

Read more on lead pipes

10 Pennsylvania ZIPs