Waterloo
Is Waterloo tap water safe to drink?
Mostly yes — Waterloo scores 84/100. This report aggregates EPA drinking water data across 1 local system in Waterloo. We found 67 total violations (11 unresolved).
Real-Time Environment
Live: 04:15 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Waterloo.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Waterloo?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Wondering if Waterloo tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Waterloo tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Waterloo, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (84/100) 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 Waterloo
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Waterloo.
Frequently Asked Questions
Is Waterloo tap water safe to drink?
Mostly yes — Waterloo scores 84/100.
How many water systems serve Waterloo?
Waterloo is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Waterloo?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Waterloo.
What is the water quality score for Waterloo?
The water quality score for Waterloo is 84 out of 100, based on EPA contaminant data, violation history, and testing results across the 1 system serving the city.
What are the top contaminants in Waterloo?
The top contaminants detected in Waterloo include Lead (90th percentile). View detailed information on our contaminants page.
Waterloo Water Quality Summary
Waterloo, IA receives a water quality score of 84/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Waterloo'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.
Waterloo's score of 84 is 12 points above the Iowa state average of 72, and above the nationwide average of roughly 78/100 across all U.S. states.
Residents and prospective homebuyers in Waterloo will find that this mid-size Iowa city's municipal water supply delivers a reliable standard of quality. However, because Waterloo is located in a Midwestern region dominated by intensive row-crop and livestock agriculture, the local groundwater is inherently susceptible to nitrate contamination. This agricultural environmental context requires ongoing vigilance, as seasonal farming runoff can directly influence the groundwater source. While the overall water quality remains solid, understanding these regional agricultural factors helps residents make informed decisions about their household water use.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Iowa water quality rankings report →
Key Contaminants
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Water Systems Serving Waterloo (1)
Check Your Specific Address
Water quality can vary by neighborhood in Waterloo.
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