WaterQ
Oklahoma State Report All States
Official Status: March 2026

Is Wister tap water safe to drink?

⚠ Caution Advised
D

Use extra caution — Wister scores 31/100.

Safety Score
31
out of 100

Still not sure if you need a filter in Wister?

Read Decision Guide →

Wister

Oklahoma

View Oklahoma state report Data updated: Mar 2026

Is Wister tap water safe to drink?

Use extra caution — Wister scores 31/100. This report aggregates EPA drinking water data across 0 local systems in Wister. We found 0 total violations (0 unresolved).

🛡️ Home Water Treatment Needs

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

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?

Wondering if Wister tap water needs filtering? We break it down.

Baby Formula Safety

Mixing baby formula with Wister tap water? Read this first.

Homebuyer's Perspective

If you're house-hunting in Wister, water quality belongs on your due-diligence checklist alongside schools and crime data. With a score of 31/100, 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 Wister a preferred choice for health-conscious families.

View Health Risk Glossary →

Compliance Record for Wister

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

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

Frequently Asked Questions

Is Wister tap water safe to drink?

Use extra caution — Wister scores 31/100.

How many water systems serve Wister?

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

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

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

What is the water quality score for Wister?

The water quality score for Wister is 31 out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.

What are the top contaminants in Wister?

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

Water Quality Score
31/100
Grade
F
Water Systems
2
Population
4,872

Wister Water Quality Summary

Wister, OK receives a water quality score of 31/100 (Grade F) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.

Wister'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.

Wister's score of 31 is 10 points below the Oklahoma state average of 41, and below the nationwide average of roughly 78/100 across all U.S. states.

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

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Water Systems Serving Wister (0)

Water system data coming soon for Wister.

Related

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