Home hazard report for 66063 — Olathe, KS
ZIP 66063 is served by City of Olathe: no health-based violations since 2016, latest lead result 11 ppb, PFAS not detected. Johnson is in EPA radon zone 1.
No health-based violations reported since 2016.
Below the current 15 ppb action level but above 10 ppb, the action level under EPA's Lead and Copper Rule Improvements (compliance from 2027). Latest round: Jan 2021.
None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.
Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code.
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Where ZIP 66063 is
blue: utility service area · scroll or pinch to zoomDrinking water: City of Olathe
Health-based violations
No health-based violations reported since 2016.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS (“forever chemicals”)
| Compound | Highest result | Samples with detection | EPA limit |
|---|---|---|---|
| PFOS | not detected | 0 of 4 | 4 ppt MCL |
| PFHxA | not detected | 0 of 4 | — |
| PFHxS | not detected | 0 of 4 | — |
| PFOA | not detected | 0 of 4 | 4 ppt MCL |
| PFNA | not detected | 0 of 4 | — |
| HFPO-DA (GenX) | not detected | 0 of 4 | — |
| PFHpA | not detected | 0 of 4 | — |
| PFDA | not detected | 0 of 4 | — |
| PFBA | not detected | 0 of 4 | — |
| PFPeA | not detected | 0 of 4 | — |
| PFBS | not detected | 0 of 4 | — |
EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.
Radon in Johnson
EPA radon zone 1 — highest potential. Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| Chemical Commodities, Inc. Olathe, Kansas · EPA ID KSD031349624 | Active (final NPL) | 2.1 mi |
| Doepke Disposal (Holliday) Johnson County, Kansas · EPA ID KSD980632301 | Active (final NPL) | 9.4 mi |
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 66063
Who supplies drinking water to ZIP 66063?
City of Olathe (EPA ID KS2009115), a surface water (rivers, lakes) system serving about 143,014 people.
Is there lead in Olathe, KS tap water?
The utility’s latest 90th-percentile lead result (Jan 2021) was 11 ppb; EPA’s action level is 15 ppb, falling to 10 ppb from 2027. Lead mostly comes from service lines and home plumbing, so the only way to know your tap is to test it.
Does Olathe, KS water have PFAS?
None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.
Has the water system in 66063 had violations?
No health-based violations reported since 2016.
Are there Superfund sites near 66063?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Chemical Commodities, Inc. (2.1 mi, Active (final NPL)); Doepke Disposal (Holliday) (9.4 mi, Active (final NPL)).
Is radon a problem in Johnson?
Johnson is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.