WaterQ
Iowa State Report All States
Official Status: March 2026

Is Janesville tap water safe to drink?

⚠ Caution Advised
D

Use extra caution — Janesville scores 30/100.

Safety Score
30
out of 100

Still not sure if you need a filter in Janesville?

Read Decision Guide →

Janesville

Iowa

View Iowa state report Verified: Apr 2026

Is Janesville tap water safe to drink?

Use extra caution — Janesville scores 30/100. This report aggregates EPA drinking water data across 0 local systems in Janesville. We found 0 total violations (0 unresolved).

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Janesville?

Requirement Status
Recommended
🟡
💡

Expert Advice

Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.

Buying a Filter?

Should you buy a water purifier in Janesville? See our analysis.

Baby Formula Safety

Is Janesville tap water safe for infants? Critical safety guide.

Homebuyer's Perspective

For those looking to relocate to Janesville, water quality is a key factor in long-term property maintenance. With a score of 30/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.

Property Impact: Requires Mitigation

Health & Family Safety

Current records show no major contaminant spikes, making Janesville a preferred choice for health-conscious families.

View Health Risk Glossary →

Score Breakdown for Janesville

EPA Compliance & Violations 60/100
Contaminant Safety Margin 30%

*Scores are calculated using weighted EPA monitoring data from the past 5 years.

Frequently Asked Questions

Is Janesville tap water safe to drink?

Use extra caution — Janesville scores 30/100.

How many water systems serve Janesville?

Janesville is served by 0 public water systems in our latest EPA-backed dataset.

How can I check water quality for my exact address in Janesville?

Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Janesville.

What is the water quality score for Janesville?

The water quality score for Janesville is N/A out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.

What are the top contaminants in Janesville?

Current contaminant data for Janesville is being updated. Check back soon or search your specific address for the latest results.

Water Quality Score
30/100
Grade
F
Water Systems
1
Population
1,034

Janesville Water Quality Summary

Janesville, IA receives a water quality score of 30/100 (Grade F) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.

Janesville's water quality score is below the national average, indicating a history of EPA violations or elevated contaminant levels. Residents are encouraged to check their specific water system report and consider additional filtration.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →

Water Systems Serving Janesville (0)

Water system data coming soon for Janesville.

Related

Compare Janesville water quality: View all states · Contaminant library · How we score water quality