Clark, MO (65243): PFAS Detected in Mapped Water Systems
EPA data combined for 4 water systems mapped to this ZIP (largest mapped system: Thomas Hill Pwsd 1)
EPA records for the water systems mapped to 65243 in Clark, MO contain 4 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 4 violations (non-health) (since 2021).
- Lead The reported 90th-percentile lead result of 0.0031 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- 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 2 - county-level radon potential, not a home measurement.
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Safety monitoring for 65243 in Clark produces 1 high-priority finding and no critical-tier conditions across all datasets reviewed.
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 (7) HIGH
Your Water System
ZIP code 65243 in Clark, Missouri is mapped to the water system Thomas Hill Pwsd 1 (EPA ID: MO2024504). This system provides water to approximately 11,250 people from surface water sources.
There are 4 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Thomas Hill Pwsd 1 | MO2024504 | 11,250 | Surface water |
| Boone County Pwsd 10 | MO3024059 | 4,963 | Groundwater |
| Boone County Cons Pwsd 1 | MO3024055 | 24,700 | Groundwater |
| Audrain County Consolidated Pwsd 2 | MO2024014 | 4,016 | Groundwater |
Other Water Quality Reports in Missouri
- 63005 (Chesterfield) - 3 violations recorded for mapped water systems
- 63006 (Chesterfield)
- 63010 (Arnold) - 2 violations recorded for mapped water systems
- 63011 (Ballwin) - 1 violation recorded for mapped water systems
- 63012 (Barnhart) - 11 violations recorded for mapped water systems
- 63013 (Beaufort) - 6 violations recorded for mapped water systems
- 63014 (Berger) - 3 violations recorded for mapped water systems
- 63015 (Catawissa) - 4 violations recorded for mapped water systems
- 63016 (Cedar Hill) - 6 violations recorded for mapped water systems
- 63017 (Chesterfield)
- 63019 (Crystal City) - 7 violations recorded for mapped water systems
- 63020 (De Soto) - 9 violations recorded for mapped water systems
- 63021 (Ballwin) - 4 violations recorded for mapped water systems
- 63022 (Ballwin)
- 63023 (Dittmer) - 1 violation recorded for mapped water systems
- 63024 (Ballwin)
- 63025 (Eureka) - 6 violations recorded for mapped water systems
- 63026 (Fenton) - 5 violations recorded for mapped water systems
- 63028 (Festus) - 15 violations recorded for mapped water systems
- 63030 (Fletcher)
Nearby Water Quality Reports
- 65278 (Renick) - 6 mi
- 65284 (Sturgeon) - 6 mi - 10 violations recorded for mapped water systems
- 65257 (Higbee) - 9 mi - 3 violations recorded for mapped water systems
- 65270 (Moberly) - 11 mi - 10 violations recorded for mapped water systems
- 65240 (Centralia) - 12 mi - 16 violations recorded for mapped water systems
- 65256 (Harrisburg) - 12 mi - 1 violation recorded for mapped water systems
- 65255 (Hallsville) - 14 mi - 12 violations recorded for mapped water systems
- 65263 (Madison) - 14 mi - 5 violations recorded for mapped water systems
- 65259 (Huntsville) - 15 mi - 4 violations recorded for mapped water systems
- 65205 (Columbia) - 16 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Thomas Hill Pwsd 1 (MO2024504) 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 65243.
Detected compounds: PFBA.
Highest measured level: 0.0093 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) MODERATE
Home & Infrastructure (6) OK
Cost & Community (8) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Clark
Based on local data for ZIP 65243, 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 Missouri 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 65243 safe to drink?
EPA SDWIS records 4 violations since 2021 across the water systems mapped to ZIP 65243 (primary system: Thomas Hill Pwsd 1), 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 65243's water come from?
The recorded water source for Thomas Hill Pwsd 1, a system mapped to ZIP code 65243, is Surface water. This system serves approximately 11,250 people.
How can I get my water tested in Clark?
If Thomas Hill Pwsd 1 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 65243 tap water?
The Lead and Copper Rule record selected for 65243 reports a 90th-percentile lead result of 0.00309 mg/L for a water system mapped to this ZIP (record date 2024-12-31). 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 65243?
65243 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Randolph 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 65243's water?
Yes, PFAS have been detected in samples from water systems mapped to 65243. 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). Clark, MO (65243): PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/65243/
@misc{zipcheckup-report-65243,
author = {{ZipCheckup}},
title = {{Clark, MO (65243): PFAS Detected in Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/65243/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 65243
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 65278 | Renick, MO | 5.5 mi | N/A | 0 |
| 65284 | Sturgeon, MO | 5.8 mi | B | 10 |
| 65257 | Higbee, MO | 9.4 mi | N/A | 3 |
| 65270 | Moberly, MO | 10.8 mi | N/A | 10 |
| 65240 | Centralia, MO | 12.0 mi | B | 16 |
| 65256 | Harrisburg, MO | 12.3 mi | B | 1 |
| 65255 | Hallsville, MO | 13.7 mi | B | 12 |
| 65263 | Madison, MO | 13.9 mi | B | 5 |
| 65259 | Huntsville, MO | 15.5 mi | N/A | 4 |
| 65205 | Columbia, MO | 16.3 mi | N/A | 0 |
Nearby ZIP Code Reports
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