Lead pipes · South Dakota
Lead pipes in South Dakota
Lead pipes (EPA LCRR + RTI National Lead Pipe Map) data for ZIP codes in South Dakota. Pick a ZIP below to dive into the lead pipes summary.
Last verified 2026-09-24 · methodology
What lands here
Not on zipradar yet. The plan is the utility's reported count of lead, galvanized-requiring-replacement and unknown-material lines. Until then, your water utility's service line inventory has them.
Source & refresh
EPA LCRR + RTI National Lead Pipe Map. Refreshed quarterly as state primacy agencies report. Primary source →
South Dakota top concern
Radon Zone 1, agricultural water, tornadoes
South Dakota is uniformly Zone 1 radon. Agricultural runoff drives EPA SDWIS nitrate compliance pressure in small rural systems. Tornado risk peaks April-June.
See South Dakota 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.