Lead pipes · Washington
Lead pipes in Washington
Lead pipes (EPA LCRR + RTI National Lead Pipe Map) data for ZIP codes in Washington. Pick a ZIP below to dive into the lead pipes summary.
Last verified 2026-05-13 · methodology
What lands here
Pages show the utility's reported count of lead, galvanized-requiring-replacement, and unknown-material lines, plus the state's reporting compliance status.
Source & refresh
EPA LCRR + RTI National Lead Pipe Map. Refreshed quarterly as state primacy agencies report. Primary source →
Washington top concern
Wildfire (eastern), Cascadia seismic, coastal flood
Washington's wildfire risk concentrates in eastern WA + the Cascades. Cascadia subduction zone shapes long-term seismic risk. Puget Sound coastal flood zones face Risk Rating 2.0 pressure. Seattle has documented LCRR lead-service-line obligations.
See Washington 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.
9 Washington ZIPs
ZIP 98101
Seattle, WA
Lead pipes →
ZIP 98109
Seattle (Queen Anne), WA
Lead pipes →
ZIP 98033
Kirkland, WA
Lead pipes →
ZIP 99201
Spokane, WA
Lead pipes →
ZIP 98225
Bellingham, WA
Lead pipes →
ZIP 98115
Seattle (Wallingford), WA
Lead pipes →
ZIP 98662
Vancouver (WA), WA
Lead pipes →
ZIP 98052
Redmond (WA), WA
Lead pipes →
ZIP 98039
Medina (WA), WA
Lead pipes →