St Joseph
Is St Joseph tap water safe to drink?
Mostly yes — St Joseph scores 96/100. This report aggregates EPA drinking water data across 3 local systems in St Joseph. We found 27 total violations (14 unresolved).
Real-Time Environment
Live: 04:15 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in St Joseph.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in St Joseph?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if St Joseph tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with St Joseph tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in St Joseph, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (96/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for St Joseph
Based on EPA SDWIS violation records and contaminant test results for all water systems serving St Joseph.
Frequently Asked Questions
Is St Joseph tap water safe to drink?
Mostly yes — St Joseph scores 96/100.
How many water systems serve St Joseph?
St Joseph is served by 3 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in St Joseph?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for St Joseph.
What is the water quality score for St Joseph?
The water quality score for St Joseph is 96 out of 100, based on EPA contaminant data, violation history, and testing results across the 3 systems serving the city.
What are the top contaminants in St Joseph?
The top contaminants detected in St Joseph include Lead (90th percentile). View detailed information on our contaminants page.
St Joseph Water Quality Summary
St Joseph, MO receives a water quality score of 96/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 3 public water systems serving the area.
St Joseph's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.
St Joseph's score of 96 is 18 points above the Missouri state average of 78, and above the nationwide average of roughly 78/100 across all U.S. states.
Situated in the agricultural plains of the Midwest near the Mississippi and Missouri river confluence, this mid-size city delivers highly rated tap water through its local distribution systems. Prospective homebuyers looking at St. Joseph, Missouri can feel confident in the municipal supply, which consistently achieves top-tier safety marks. This strong track record provides peace of mind for daily residential use throughout the community.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Missouri water quality rankings report →
Key Contaminants
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Water Systems Serving St Joseph (3)
Check Your Specific Address
Water quality can vary by neighborhood in St Joseph.
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