Wister, OK: 27 Health Violations — 66/100 (2026)
1 ZIP code · 9 water systems · Updated 2026-06-03
Wister shows moderate tap water quality for OK — some areas carry documented EPA violations while others meet standards without issues.
How Wister Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Wister Residents
- Your city's water systems recorded 97 violations in the past 5 years.
- Average lead level: 0.001 mg/L.
- Homes built before 1986: 47% — older plumbing may contain lead solder.
- Estimated remediation: $600 per household.
- CDC health risk index: 16.21 — above typical levels.
Wister's Water Providers
In Wister, OK, residential water supply is distributed across multiple utilities rather than concentrated in one. The 3 leading providers out of 9 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
Overview
We track water quality and home safety data for 1 ZIP code in Wister, Oklahoma (population ~3,540), covering 9 community water systems serving approximately 20,947 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 27 health-based violations documented.
Home Safety Score
Average Home Safety Score for Wister: C (66/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Wister water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0010 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 76 | 1 |
| Lead and Copper Rule | Treatment Technique | 46 | 1 |
| Consumer Confidence Report Rule | Reporting | 16 | 1 |
| Revised Total Coliform Rule | Microbiological | 16 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 12 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 74966 | C | 97 | 27 | Leflore Company Rwd #18 |
All ZIP Codes in Wister
- 74966 [C] — 97 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Wister Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Wister's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Wister Infrastructure Age
With 47% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Over the decades, Wister accumulated housing from multiple construction periods. The median build year of 1982 places the midpoint of that stock near the 1986 threshold when lead solder in plumbing became federally prohibited — leaving a sizable share of homes on each side of that safety line.
Most homes in Wister were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Wister
When estimated remediation is placed alongside median property values in Wister, the resulting ratio is low — a finding consistent with a household financial perspective where documented issues can be addressed without a meaningful impact on overall equity position, making this market one of the more favorable contexts for remediation planning.
Remediation costs in Wister are relatively low compared to home values. The $300–$1,500 estimated range is a small fraction of median property value. Home values are 12% below the Oklahoma average.
Wister: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Practically, the structural drivers in Wister — 47% pre-rule stock and citywide monitoring at or beyond the regulatory benchmark — make an in-home draw the practical way to translate aggregate averages into the specific conditions at one address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Wister
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Haloacetic Acids (HAA5) can reduce the most common contaminant found in Wister's water.
- Check your home's plumbing. With 47% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Wister, OK