Is Weston, MO Tap Water Safe to Drink?
Graded B-, with 11 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
73.2/100
waterverge.com Weston, MO — Water Quality Report
Weston's drinking water received a grade of B- (73.2 out of 100), indicating fair water quality. The city's 3 water systems serve approximately 4,190 residents using groundwater.
Lead levels were measured at 1.6 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 37 violations on record, including 6 health-based violations. 11 remain unresolved.
What to know about Weston's water
Weston ranks #374 out of 509 cities in Missouri for water quality, placing it below average in the state.
Weston relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
The system has seen 16 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Weston, MO water safe to drink?
Weston's drinking water has significant quality concerns based on EPA testing data. With a grade of B- (73.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 3 water systems serve approximately 4,190 residents using groundwater (wells).
Recent water quality updates for Weston
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Weston's water quality assessment. Grade: B- (73.2/100).
Contaminants: Lead and Copper Rule.
Contaminants: Groundwater Rule.
Contaminants: Groundwater Rule.
Federal disaster declaration (FEMA DR-4435). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4012). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Weston's water supply.
Well within EPA limits.
Violation history
Weston's water system has 37 total violations on record, including 6 health-based violations. 11 remain unresolved. 16 violations were issued in the last 5 years.
Flood & environmental risk
Platte County has experienced 10 federally declared disasters since 1973. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Missouri River At Leavenworth.
Where does Weston's water come from?
Weston's drinking water comes from groundwater (wells), supplied by 3 water systems serving approximately 4,190 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Missouri River At Leavenworth (river).
What Weston residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Weston's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Weston's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Weston
Industrial polluters nearby
Reported releases to surface water by facilities near Weston, ranked by pounds discharged annually.
Total reported releases to surface water: 2 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
IATAN GENERATING STATION WESTON, MO64098 | Copper And Copper Compounds | 2 | 5.5 mi |
GREAT WESTERN MANUFACTURING CO. INC. LEAVENWORTH, KS66048 | — | — | 7.5 mi |
FEDERAL BUREAU OF PRISONS US PENITENTIARY LEAVENWORTH, KS66048 | — | — | 5.8 mi |
GEIGER READY MIX LEAVENWORTH, KS66048 | — | — | 6.9 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Platte County has experienced 10 federally declared disasters since 1973. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 1.6 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Weston compares by contaminant
Explore where Weston ranks among all Missouri cities for specific contaminants.
Water source & infrastructure
Where Weston's water comes from
Weston's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 4,190 people through 3 water systems.
Water bodies near Weston
Weston is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Weston
| System Name | PWSID | Population | Source |
|---|---|---|---|
| WESTON PWS | MO1010851 | 1,850 | GW |
| PLATTE COUNTY PWSD 7 | MO1024481 | 1,725 | GWP |
| PLATTE COUNTY PWSD 3 | MO1024477 | 615 | GWP |
How Weston compares
Full Missouri rankings →Weston's score of 73.2/100 is above the average of 62/100 among major Missouri cities. It outscores 5 of 10 nearby cities.
Nearby cities
View Missouri rankings →About Weston, MO
Learn more about your water
Guides and resources related to Weston's water quality findings.
Explore water quality across Platte
Frequently asked questions
Is Weston, MO tap water safe to drink?
Weston's water quality earned a grade of B- (73.2/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #374 out of 509 cities tested in Missouri.
What contaminants are in Weston's water?
Lead was measured at 1.6 ppb (90th percentile). 37 violations are on record.
How is Weston's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Weston?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Weston's water come from?
Weston's water is sourced from Groundwater. The city has 3 water systems serving approximately 4,190 residents.
What health violations has Weston's water system had?
Weston has 6 health-based violations on record. The most recent violation was recorded in October 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 11 violations remain unresolved.
Is Weston's groundwater at risk of contamination?
Weston uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 37 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Weston's water compare to other cities?
Weston ranks #374 out of 509 cities in Missouri (better than 27% of state cities) and #10135 out of 15744 cities nationally (36th percentile). The grade of B- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.