Hamilton, MO (64644): 1 Health-Based Violation Recorded for Mapped Water Systems
EPA data combined for 6 water systems mapped to this ZIP (largest mapped system: Hamilton Public Water System)
Health-based violation records by water system:
EPA records for the water systems mapped to 64644 in Hamilton, MO contain 8 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 1 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 1 health-based violation and 7 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; 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 64644 in Hamilton 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: 2 of 4 components and 1 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) CRITICAL
Your Water System
ZIP code 64644 in Hamilton, Missouri is mapped to the water system Hamilton Public Water System (EPA ID: MO1010342). This system provides water to approximately 1,813 people from surface water sources.
There are 6 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Hamilton Public Water System | MO1010342 | 1,813 | Surface water |
| Caldwell County Pwsd 3 | MO1021318 | 1,452 | Surface water |
| Clinton County Pwsd 3 | MO1024155 | 3,722 | Surface water |
| Caldwell County Pwsd 2 | MO1024079 | 695 | Surface water |
| Caldwell County Pwsd 1 | MO1024078 | 335 | 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
- 64649 (Kidder) - 7 mi - 7 violations recorded for mapped water systems
- 64650 (Kingston) - 8 mi - 9 violations recorded for mapped water systems
- 64625 (Breckenridge) - 10 mi - 3 violations recorded for mapped water systems
- 64689 (Winston) - 11 mi - 5 violations recorded for mapped water systems
- 64640 (Gallatin) - 11 mi - 9 violations recorded for mapped water systems
- 64620 (Altamont) - 12 mi - 4 violations recorded for mapped water systems
- 64637 (Cowgill) - 12 mi - 2 violations recorded for mapped water systems
- 64671 (Polo) - 13 mi - 11 violations recorded for mapped water systems
- 64429 (Cameron) - 13 mi - 22 violations recorded for mapped water systems
- 64654 (Lock Springs) - 14 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Hamilton Public Water System (MO1010342) 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 64644.
Detected compounds: PFBA.
Highest measured level: 0.0052 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 (6) MODERATE
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Hamilton
Based on local data for ZIP 64644, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Gutter Installation & Repair
The median home in 64644 was built around 1978. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Hamilton is 1978; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Homes built around 1978 may be on their second or third roof. A professional inspection can catch damage before leaks start.
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 64644 safe to drink?
EPA SDWIS records 8 violations since 2021 across the water systems mapped to ZIP 64644 (primary system: Hamilton Public Water System), including 1 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 64644's water come from?
The recorded water source for Hamilton Public Water System, a system mapped to ZIP code 64644, is Surface water. This system serves approximately 1,813 people.
How can I get my water tested in Hamilton?
If Hamilton Public Water System 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.
What is the radon risk for 64644?
64644 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Caldwell 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 64644's water?
Yes, PFAS have been detected in samples from water systems mapped to 64644. 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). Hamilton, MO (64644): 1 Health-Based Violation Recorded for Mapped Water Systems. https://zipcheckup.com/report/64644/
@misc{zipcheckup-report-64644,
author = {{ZipCheckup}},
title = {{Hamilton, MO (64644): 1 Health-Based Violation Recorded for Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/64644/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 64644
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 64649 | Kidder, MO | 6.7 mi | N/A | 7 |
| 64650 | Kingston, MO | 7.7 mi | N/A | 9 |
| 64625 | Breckenridge, MO | 9.9 mi | N/A | 3 |
| 64689 | Winston, MO | 11.5 mi | N/A | 5 |
| 64640 | Gallatin, MO | 11.5 mi | N/A | 9 |
| 64620 | Altamont, MO | 12.2 mi | N/A | 4 |
| 64637 | Cowgill, MO | 12.3 mi | N/A | 2 |
| 64671 | Polo, MO | 12.7 mi | N/A | 11 |
| 64429 | Cameron, MO | 13.4 mi | N/A | 22 |
| 64654 | Lock Springs, MO | 13.7 mi | N/A | 0 |
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