WaterQ
Idaho State Report All States
Official Status: March 2026

Is Boise tap water safe to drink?

⚠ Caution Advised
C

Generally acceptable, but review local hotspots — score 65/100.

Safety Score
65
out of 100

Still not sure if you need a filter in Boise?

Read Decision Guide →

Boise

Idaho

View Idaho state report Data updated: Mar 2026

Is Boise tap water safe to drink?

Generally acceptable, but review local hotspots — score 65/100. This report aggregates EPA drinking water data across 1 local system in Boise. We found 0 total violations (0 unresolved).

Real-Time Environment

Live: 02:30 PM
0mm Precipitation

☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Boise.

Water Quality Impact

✅ Minimal Impact Localized weather conditions may influence test result variability.

🛡️ Home Water Treatment Needs

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

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?

Filter or no filter for Boise water? Here's what the data says.

Baby Formula Safety

What new parents in Boise should know about tap water safety.

Homebuyer's Perspective

Water quality is easy to overlook when evaluating a move to Boise, but it can affect plumbing longevity and appliance lifespan. With a score of 65/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.

Property Impact: Requires Mitigation

Health & Family Safety

Residents should monitor Turbidity levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.

View Health Risk Glossary →

Compliance Record for Boise

0
Violations (5yr)
0
Unresolved
8
Contaminants Tracked
3
Exceeding EPA Limit

Based on EPA SDWIS violation records and contaminant test results for all water systems serving Boise.

Frequently Asked Questions

Is Boise tap water safe to drink?

Generally acceptable, but review local hotspots — score 65/100.

How many water systems serve Boise?

Boise is served by 1 public water system in our latest EPA-backed dataset.

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

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

What is the water quality score for Boise?

The water quality score for Boise is 65 out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.

What are the top contaminants in Boise?

The top contaminants detected in Boise include Turbidity, Atrazine, Lead. View detailed information on our contaminants page.

Water Quality Score
65/100
Grade
C
Water Systems
4
Population
279,491

Boise Water Quality Summary

Boise, ID receives a water quality score of 65/100 (Grade C) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 4 public water systems serving the area.

Boise's water quality is near the national average. While most systems meet EPA standards, some violations have been recorded. Residents may wish to review their specific water system's report for contaminant details.

Boise's score of 65 is 19 points below the Idaho state average of 84, and below the nationwide average of roughly 78/100 across all U.S. states.

As a large city nestled in Idaho's Mountain West region of agricultural valleys and forested mountains, Boise relies on multiple local water systems to deliver its tap water. Current residents and prospective homebuyers should be aware that the overall quality of these municipal supplies generally rates as average, indicating that there is room for improvement in overall water purity. Depending on which local system serves a specific property, the water characteristics may vary, making it beneficial to look closer at the specific source servicing your neighborhood.

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

Key Contaminants

Turbidity Violation
2.1423 / 1 NTU
0 NTU MCL: 1 NTU
Atrazine Violation
5.2337 / 3 μg/L
0 μg/L MCL: 3 μg/L
Lead Violation
21.2228 / 15 μg/L
0 μg/L MCL: 15 μg/L
Total Trihalomethanes
71.2337 / 80 μg/L
0 μg/L MCL: 80 μg/L
PFAS (Per- and Polyfluoroalkyl Substances)
0.0027 / 0.004 μg/L
0 μg/L MCL: 0.004 μg/L
Perchlorate
24.5336 / 56 μg/L
0 μg/L MCL: 56 μg/L
Benzene
1.9795 / 5 μg/L
0 μg/L MCL: 5 μg/L
Trichloroethylene (TCE)
1.5616 / 5 μg/L
0 μg/L MCL: 5 μg/L

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Water Systems Serving Boise (1)

Related

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