Overland Park, KS (66251): High Radon Potential Area
EPA data for Water District 1 of Johnson Company
EPA records for the water systems mapped to 66251 in Overland Park, KS contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water No drinking-water violations in EPA records since 2021.
- Lead The reported 90th-percentile lead result of 0.0065 mg/L is below the EPA action level, but EPA's health goal for lead is zero; filtration is advisable.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
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Compiled data for Overland Park (66251) captures 1 condition at the high-priority tier - no finding in this dataset meets the critical threshold.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (8) HIGH
Your Water System
ZIP code 66251 in Overland Park, Kansas is mapped to the water system Water District 1 of Johnson Company (EPA ID: KS2009110). This system provides water to approximately 490,000 people from surface water sources.
Other Water Quality Reports in Kansas
- 66002 (Atchison) - 18 violations recorded for mapped water systems
- 66006 (Baldwin City) - 6 violations recorded for mapped water systems
- 66007 (Basehor) - 5 violations recorded for mapped water systems
- 66008 (Bendena) - 7 violations recorded for mapped water systems
- 66010 (Blue Mound)
- 66012 (Bonner Springs) - 13 violations recorded for mapped water systems
- 66013 (Bucyrus) - 5 violations recorded for mapped water systems
- 66014 (Centerville) - 14 violations recorded for mapped water systems
- 66015 (Colony) - 1 violation recorded for mapped water systems
- 66016 (Cummings)
- 66017 (Denton)
- 66018 (De Soto) - 6 violations recorded for mapped water systems
- 66019 (Clearview City)
- 66020 (Easton) - 6 violations recorded for mapped water systems
- 66021 (Edgerton) - 7 violations recorded for mapped water systems
- 66023 (Effingham)
- 66024 (Elwood) - 11 violations recorded for mapped water systems
- 66025 (Eudora) - 10 violations recorded for mapped water systems
- 66026 (Fontana) - 34 violations recorded for mapped water systems
- 66027 (Fort Leavenworth)
Nearby Water Quality Reports
- 66051 (Olathe) - <1 mi
- 66063 (Olathe) - <1 mi
- 66225 (Overland Park) - <1 mi
- 66276 (Shawnee Mission) - <1 mi
- 66282 (Overland Park) - <1 mi
- 66283 (Overland Park) - <1 mi
- 66061 (Olathe) - 1 mi - 4 violations recorded for mapped water systems
- 66062 (Olathe) - 4 mi - 4 violations recorded for mapped water systems
- 66031 (New Century) - 6 mi - 4 violations recorded for mapped water systems
- 66215 (Lenexa) - 6 mi - 4 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Water District 1 of Johnson Company (KS2009110) on EPA.gov.
5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 66251.
Detected compounds: PFBA.
Highest measured level: 0.0053 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (10) HIGH
Home & Infrastructure (7) OK
Cost & Community (6) OK
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Overland Park
Based on local data for ZIP 66251, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Roofing Inspection & Repair
Active weather alerts in Kansas increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 66251 safe to drink?
EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 66251 (primary system: Water District 1 of Johnson Company), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 66251's water come from?
The recorded water source for Water District 1 of Johnson Company, a system mapped to ZIP code 66251, is Surface water. This system serves approximately 490,000 people.
How can I get my water tested in Overland Park?
If Water District 1 of Johnson Company supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 66251 tap water?
The Lead and Copper Rule record selected for 66251 reports a 90th-percentile lead result of 0.00648 mg/L for a water system mapped to this ZIP (record date 2023-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 66251?
66251 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Johnson County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 66251's water?
Yes, PFAS have been detected in samples from water systems mapped to 66251. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
How to cite this page
ZipCheckup. (2026). Overland Park, KS (66251): High Radon Potential Area. https://zipcheckup.com/report/66251/
@misc{zipcheckup-report-66251,
author = {{ZipCheckup}},
title = {{Overland Park, KS (66251): High Radon Potential Area}},
year = {2026},
url = {https://zipcheckup.com/report/66251/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 66251
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 66051 | Olathe, KS | <1 mi | N/A | 0 |
| 66063 | Olathe, KS | <1 mi | N/A | 0 |
| 66225 | Overland Park, KS | <1 mi | N/A | 0 |
| 66276 | Shawnee Mission, KS | <1 mi | N/A | 0 |
| 66282 | Overland Park, KS | <1 mi | N/A | 0 |
| 66283 | Overland Park, KS | <1 mi | N/A | 0 |
| 66061 | Olathe, KS | 1.1 mi | C | 4 |
| 66062 | Olathe, KS | 3.6 mi | C | 4 |
| 66031 | New Century, KS | 6.3 mi | C | 4 |
| 66215 | Lenexa, KS | 6.5 mi | C | 4 |
Nearby ZIP Code Reports
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