Home hazard report for 74440 — Hoyt, OK
ZIP 74440 is served by Haskell Co. Water Company: 24 violations since 2016, latest lead result 0 ppb, PFAS not tested. Haskell is in EPA radon zone 3.
Health-based violations since 2016: Interim Enhanced Surface Water Treatment Rule, Carbon, Total, TTHM. 1 is still listed as unresolved in EPA records.
90th-percentile lead in the latest round (Jan 2026). Lead comes mostly from household plumbing and service lines, so individual homes can be higher.
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).
Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.
No active Superfund site within 10 miles of the ZIP center.
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Where ZIP 74440 is
blue: utility service area · scroll or pinch to zoomDrinking water: Haskell Co. Water Company
Health-based violations
| Contaminant or rule | Health-based violations since 2016 |
|---|---|
| Interim Enhanced Surface Water Treatment Rule | 11 |
| Carbon, Total | 7 |
| TTHM | 5 |
| Lead and Copper Rule Revisions | 1 |
A health-based violation means a contaminant exceeded its legal limit (MCL) or a required treatment technique was not met, as reported by the state to EPA’s SDWIS. 1 still listed as unresolved (“unaddressed” or “addressed” but not yet returned to compliance); the latest began Apr 2026.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS (“forever chemicals”)
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5).
Radon in Haskell
EPA radon zone 3 — low potential. Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Superfund sites nearby
No site on EPA’s Superfund National Priorities List lies within 10 miles of the center of this ZIP code.
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 74440
Who supplies drinking water to ZIP 74440?
Haskell Co. Water Company (EPA ID OK1020301), a surface water (rivers, lakes) system serving about 3,000 people.
Is there lead in Hoyt, OK tap water?
The utility’s latest 90th-percentile lead result (Jan 2026) was 0 ppb; EPA’s action level is 15 ppb, falling to 10 ppb from 2027. Lead mostly comes from service lines and home plumbing, so the only way to know your tap is to test it.
Does Hoyt, OK water have PFAS?
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).
Has the water system in 74440 had violations?
Health-based violations since 2016: Interim Enhanced Surface Water Treatment Rule, Carbon, Total, TTHM. 1 is still listed as unresolved in EPA records.
Are there Superfund sites near 74440?
No active Superfund site within 10 miles of the ZIP center.
Is radon a problem in Haskell?
Haskell is in EPA radon zone 3 (low potential). Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.