Stephan, SD: High Radon Risk - Home Safety Score unavailable
1 ZIP code · 0 water systems · Updated
Data: EPA SDWIS
Stephan Water: The Quick Version
- Homes built before 1986: 36% - older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 14.44 - above typical levels.
Overview
We track home safety data for 1 ZIP code in Stephan, South Dakota, covering 0 community water system serving approximately 7 people. The EPA snapshots used for this build directly map water systems to 0 of 1 ZIP codes.
EPA water-system violation data is unavailable in the dataset used for this page for the tracked ZIP codes in Stephan.
Lead & Copper
- Lead data: not yet available for Stephan
- Lead action-level status: not available
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
All ZIP Codes in Stephan
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Stephan
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
How Old Is Stephan's Housing Stock?
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Development in Stephan unfolded across multiple decades, and the median build year of 2007 reflects a housing inventory where eras of construction are genuinely mixed - including portions that predate the federal prohibition on lead solder in plumbing.
Most homes in Stephan were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Protecting Children from Lead in Stephan
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Wherever 36% of local housing was built before solder rules changed - as is the case in Stephan - a faucet-level sample closes the gap that aggregate utility data cannot.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Stephan, SD