Wister, OK (74966): 81 Health-Based Violations Recorded for Mapped Water Systems
EPA data combined for 7 water systems mapped to this ZIP (largest mapped system: Leflore Company Rwd #18)
Health-based violation records by water system:
- Latimer Company Rwd #3 (21)
- Leflore Company Rwd #3 (21)
- Heavener Utility Authority - Psg (11)
- Leflore Company Rwd #14 (10)
- Latimer Company Rwd #4 (9)
- and 1 more
EPA records for the water systems mapped to 74966 in Wister, OK contain 199 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 81 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 81 health-based violations and 118 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
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Safety records for Wister (74966) contain one critical finding - 1 high-priority condition follow.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) CRITICAL
Your Water System
ZIP code 74966 in Wister, Oklahoma is mapped to the water system Leflore Company Rwd #18 (EPA ID: OK3004009). This system provides water to approximately 3,870 people from surface water sources.
There are 7 community water systems serving this area.
Lead & Copper in Your Water
The EPA requires water systems to monitor lead and copper levels under the Lead and Copper Rule.
| Metal | Measured Level | EPA Action Level | Status | Sample Date or Period |
|---|---|---|---|---|
| Copper | Action-level exceedance on record | 1.3 mg/L | Exceeds action level | Not present in ZipCheckup accepted source data |
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Leflore Company Rwd #18 | OK3004009 | 3,870 | Surface water |
| Leflore Company Rwd #14 | OK3004001 | 9,077 | Surface water |
| Leflore Company Rwd #1 | OK3004003 | 1,758 | Surface water |
| Leflore Company Rwd #3 | OK3004006 | 1,643 | Surface water |
| Heavener Utility Authority - Psg | OK1020101 | 3,000 | Surface water |
Other Water Quality Reports in Oklahoma
- 73001 (Albert)
- 73002 (Alex) - 39 violations recorded for mapped water systems
- 73003 (Edmond)
- 73004 (Amber) - 166 violations recorded for mapped water systems
- 73005 (Anadarko) - 102 violations recorded for mapped water systems
- 73006 (Apache) - 39 violations recorded for mapped water systems
- 73007 (Arcadia) - 30 violations recorded for mapped water systems
- 73008 (Bethany) - 7 violations recorded for mapped water systems
- 73009 (Binger) - 14 violations recorded for mapped water systems
- 73010 (Blanchard) - 677 violations recorded for mapped water systems
- 73011 (Bradley) - 105 violations recorded for mapped water systems
- 73012 (Edmond) - 8 violations recorded for mapped water systems
- 73013 (Edmond) - 8 violations recorded for mapped water systems
- 73014 (Calumet) - 90 violations recorded for mapped water systems
- 73015 (Carnegie) - 6 violations recorded for mapped water systems
- 73016 (Cashion) - 195 violations recorded for mapped water systems
- 73017 (Cement) - 109 violations recorded for mapped water systems
- 73018 (Chickasha) - 191 violations recorded for mapped water systems
- 73019 (Norman) - 3 violations recorded for mapped water systems
- 73020 (Choctaw) - 290 violations recorded for mapped water systems
Nearby Water Quality Reports
- 74935 (Fanshawe) - 7 mi - 12 violations recorded for mapped water systems
- 74940 (Howe) - 8 mi - 46 violations recorded for mapped water systems
- 74942 (Leflore) - 12 mi
- 74953 (Poteau) - 12 mi - 93 violations recorded for mapped water systems
- 74937 (Heavener) - 12 mi - 65 violations recorded for mapped water systems
- 74956 (Shady Point) - 14 mi - 62 violations recorded for mapped water systems
- 74951 (Panama) - 15 mi - 25 violations recorded for mapped water systems
- 74947 (Monroe) - 15 mi
- 74930 (Bokoshe) - 16 mi - 126 violations recorded for mapped water systems
- 74939 (Hodgen) - 16 mi - 54 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Leflore Company Rwd #18 (OK3004009) on EPA.gov.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
Compliance History
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 74966.
Detected compounds: PFBA.
Highest measured level: 0.0088 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (10) HIGH
Home & Infrastructure (6) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Wister
Based on local data for ZIP 74966, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Gutter Installation & Repair
The median home in 74966 was built around 1982. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Wister is 1982; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Active weather alerts in Oklahoma increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 74966 safe to drink?
EPA SDWIS records 199 violations since 2021 across the water systems mapped to ZIP 74966 (primary system: Leflore Company Rwd #18), including 81 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 74966's water come from?
The recorded water source for Leflore Company Rwd #18, a system mapped to ZIP code 74966, is Surface water. This system serves approximately 3,870 people.
How can I get my water tested in Wister?
If Leflore Company Rwd #18 supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
What is the radon risk for 74966?
74966 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Le Flore County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 74966's water?
Yes, PFAS have been detected in samples from water systems mapped to 74966. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
How to cite this page
ZipCheckup. (2026). Wister, OK (74966): 81 Health-Based Violations Recorded for Mapped Water Systems. https://zipcheckup.com/report/74966/
@misc{zipcheckup-report-74966,
author = {{ZipCheckup}},
title = {{Wister, OK (74966): 81 Health-Based Violations Recorded for Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/74966/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 74966
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 74935 | Fanshawe, OK | 6.6 mi | N/A | 12 |
| 74940 | Howe, OK | 8.3 mi | N/A | 46 |
| 74942 | Leflore, OK | 11.6 mi | N/A | 0 |
| 74953 | Poteau, OK | 12.2 mi | N/A | 93 |
| 74937 | Heavener, OK | 12.5 mi | N/A | 65 |
| 74956 | Shady Point, OK | 13.7 mi | N/A | 62 |
| 74951 | Panama, OK | 15.1 mi | N/A | 25 |
| 74947 | Monroe, OK | 15.4 mi | N/A | 0 |
| 74930 | Bokoshe, OK | 16.0 mi | N/A | 126 |
| 74939 | Hodgen, OK | 16.2 mi | N/A | 54 |
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