Water Quality in Wister, OK (74966)
EPA violation data for public water systems serving ZIP code 74966.
Active Health Violations
32 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 97% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
3,456
Population
9
Water Systems
117
Violations (5yr)
32
Health-Based
Location
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Water Systems Serving This Area (9)
Leflore Co. Rwd #18
8 health-basedWister
Latimer Co. Rwd #3
19 health-basedLake Wister State Park
Coe Quarters 1 (Wister)
Coe Quarters 2 (Wister)
Coe Overlook (Wister)
Coe Project Office (Wister)
Poteau Valley Improvement Authority
5 health-basedContaminants Found
Used to disinfect water — generally safe at regulated levels.
Missed testing deadlines — not a detection of bacteria.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Wister (74966) has more violations than 97% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 117.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.