Lead pipes · ZIP 20850
Lead pipes in Rockville, MD
ZIP 20850 (Maryland) — no per-ZIP lead pipes figures here yet. What EPA LCRR + RTI National Lead Pipe Map publishes, its limits, and where to look it up.
What this page shows
zipradar does not have per-ZIP lead pipes figures for ZIP 20850 (Rockville, Maryland) yet. The primary source is EPA LCRR + RTI National Lead Pipe Map; check it directly for current records.
Source & refresh
EPA LCRR + RTI National Lead Pipe Map. zipradar does not host this data yet; read it at the source. Primary source →
Limitations specific to this source
Coverage rolls out state-by-state through 2026-2027 per the federal timeline. Utilities with incomplete inventories are flagged rather than omitted.
Maryland context
Chesapeake flood, lead pipes
Maryland has dense FEMA NFHL coverage along Chesapeake Bay tributaries. Baltimore City has extensive LCRR lead-service-line obligations and flagged EPA SDWIS compliance history. Radon Zone 1-2 across most counties.
See Maryland 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.
The other dimensions for ZIP 20850
Lead pipes is one of twelve public-records dimensions zipradar indexes per address. See the ZIP 20850 index for the other eleven — each with its own regulator, source and link:
All dimensions for Rockville, MD →Frequently asked questions
What is the lead pipes for ZIP 20850?
zipradar does not have per-ZIP lead pipes figures for ZIP 20850 (Rockville, Maryland) yet. The primary source is EPA LCRR + RTI National Lead Pipe Map; check it directly for current records.
Where does the lead pipes data come from?
EPA LCRR + RTI National Lead Pipe Map is the primary source (https://www.epa.gov/sourcewaterprotection/drinking-water-mapping-application-protect-source-waters-dwmaps). zipradar does not host per-ZIP lead pipes figures yet.
What are the limitations of lead pipes data?
Coverage rolls out state-by-state through 2026-2027 per the federal timeline. Utilities with incomplete inventories are flagged rather than omitted.
Is ZIP 20850 (Rockville) data current?
Page last verified 2026-09-24. zipradar has no per-ZIP lead pipes figures for ZIP 20850 yet, so check EPA LCRR + RTI National Lead Pipe Map directly. The ZIP overview at /zip/20850/ shows what zipradar does cover.