Kadoka, SD Water Safety: 83/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Compared to statewide averages in SD, Kadoka scores well — health violations are below the norm and systems generally operate within federal standards.
How Kadoka Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Kadoka Residents
- Average lead level: 0.002 mg/L.
- Homes built before 1986: 70% — older plumbing may contain lead solder.
- Estimated remediation: $400 per household.
- CDC health risk index: 17.66 — above typical levels.
Kadoka's Water Providers
2 water utilities share the residential service territory in Kadoka, SD — out of 2 total systems in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Kadoka, South Dakota (population ~786), covering 2 community water systems serving approximately 1,713 people region-wide.
No EPA violations recorded across any ZIP codes in Kadoka — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Kadoka: B (83/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Kadoka water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0020 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 57543 | B | WR/LJ - CREIGHTON PROJECT | 1,170 |
All ZIP Codes in Kadoka
- 57543 [B]
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
Updated daily.
Kadoka Community Health Snapshot
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
Kadoka Infrastructure Age
With 70% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
The lead that enters tap water in older homes often comes not from the municipal supply but from the home's own plumbing — from solder used in copper joints before the 1986 federal ban, or from lead pipes installed before 1970. In Kadoka, where the median build year is 1976, these older materials are widespread. More than half the residential stock predates the 1986 solder ban, and a significant fraction predates 1970 as well. For residents in those homes, the city-wide water quality picture is a less relevant frame than the specific materials inside their own walls and under their own street.
Over half of homes in Kadoka were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Kadoka
In Kadoka, documented water and safety issues can be addressed without making a meaningful dent in home equity — the financial proportionality here is favorable, and the commitment fits within standard property planning frameworks.
Remediation costs in Kadoka are relatively low compared to home values. The $0–$800 estimated range is a small fraction of median property value. Home values are 9% below the South Dakota average.
Kadoka: Lead Risk & Vulnerable Populations
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 70% of local housing was built before solder rules changed — as is the case in Kadoka — 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 Kadoka, SD