{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/lead-pipes/02451/","name":"Lead pipes for ZIP 02451 — Waltham, MA","description":"Lead pipes data for ZIP 02451 (Waltham, Massachusetts), sourced from EPA LCRR + RTI National Lead Pipe Map.","topic":{"slug":"lead-pipes","label":"Lead pipes","source":"EPA LCRR + RTI National Lead Pipe Map","sourceUrl":"https://dwmaps.rti.org","refreshCadence":"Quarterly as state primacy agencies report","summary":"Pages show the utility's reported count of lead, galvanized-requiring-replacement, and unknown-material lines, plus the state's reporting compliance status.","limitations":"Coverage rolls out state-by-state through 2026-2027 per the federal timeline. Utilities with incomplete inventories are flagged rather than omitted."},"place":{"zip":"02451","city":"Waltham","state":"MA","stateFull":"Massachusetts","county":"Middlesex County","countySlug":"middlesex-county","geo":{"latitude":42.3765,"longitude":-71.2356}},"stateContext":{"topConcern":"Lead pipes, coastal flood, older housing","narrative":"Massachusetts has dense lead-service-line obligations under LCRR in Boston, Lowell, Worcester, Springfield. Coastal AE/VE zones along the South Shore + Cape. Older housing stock means lead-paint risk overlaps with LSL risk."},"radonZone":null,"airQuality":null,"datePublished":"2026-04-24","dateModified":"2026-09-07","canonicalUrl":"https://zipradar.org/topic/lead-pipes/02451/","zipDashboardUrl":"https://zipradar.org/zip/02451/","zipDashboardApiUrl":"https://zipradar.org/api/zip/02451/","primarySourceUrl":"https://dwmaps.rti.org","license":{"content":"CC-BY-4.0","attribution":"zipradar.org — https://zipradar.org/topic/lead-pipes/02451/"}}