Decatur
Is Decatur tap water safe to drink?
Mostly yes — Decatur scores 93/100. This report aggregates EPA drinking water data across 3 local systems in Decatur. We found 155 total violations (33 unresolved).
Real-Time Environment
Live: 07:30 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Decatur.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Decatur?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Should you buy a water purifier in Decatur? See our analysis.
Baby Formula Safety
Is Decatur tap water safe for infants? Critical safety guide.
Homebuyer's Perspective
For those looking to relocate to Decatur, water quality is a key factor in long-term property maintenance. The high safety score (93/100) 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 Decatur
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Decatur.
Frequently Asked Questions
Is Decatur tap water safe to drink?
Mostly yes — Decatur scores 93/100.
How many water systems serve Decatur?
Decatur is served by 3 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Decatur?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Decatur.
What is the water quality score for Decatur?
The water quality score for Decatur is 93 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 Decatur?
The top contaminants detected in Decatur include Lead (90th percentile). View detailed information on our contaminants page.
Decatur Water Quality Summary
Decatur, IL receives a water quality score of 93/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 3 public water systems serving the area.
Decatur'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.
Decatur's score of 93 is 27 points above the Illinois state average of 66, and above the nationwide average of roughly 78/100 across all U.S. states.
Homebuyers looking at Decatur can find peace of mind in the top-tier rating and excellent quality of the local tap water. Sourced through multiple distinct water systems, this mid-size Illinois city's supply consistently achieves an outstanding standard of safety. Such reliable performance is reassuring in a Midwestern region characterized by both a dense Chicago metro and agricultural downstate areas. For everyday residents, this translates to dependable water infrastructure that effectively maintains clean household supplies.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Illinois water quality rankings report →
Key Contaminants
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Water Systems Serving Decatur (3)
Check Your Specific Address
Water quality can vary by neighborhood in Decatur.
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