EPA data as of Oct 2026 · page updated 2026-10-30

Home hazard report for 72365 — Marked Tree, AR

ZIP 72365 is served by Marked Tree Waterworks: no health-based violations since 2016, latest lead result 9 ppb, PFAS not tested. Poinsett County is in EPA radon zone 3.

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Where ZIP 72365 is

Dashed: ZIP area · blue: utility service area · scroll or pinch to zoom
ZIP code areaZIP center Water utility service area PFOA/PFOS ≥ 4 ppt Lead > 15 ppb 5+ violations Superfund site (active) proposed cleaned up Circles: other water systems flagged nearby; size = people served. Tap any symbol for details.

Drinking water: Marked Tree Waterworks

EPA IDAR0000430
People served2,610
Sourcegroundwater (wells)
Connections1,025

Health-based violations

No health-based violations reported since 2016.

Full record for Marked Tree Waterworks →

Other systems overlapping this ZIP: Lepanto Waterworks, Northern Ohio Water Assoc.

Lead

Jan 20019 ppb
Jan 199813 ppb
Jan 19971 ppb
Jan 19968 ppb
Jan 19953 ppb
Jan 19943 ppb
Jul 19935 ppb

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 Poinsett County

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 →

Natural hazard risk

FEMA rates the overall natural-hazard risk of this neighborhood (census tract) as Relatively High, with relatively high social vulnerability and relatively low community resilience.

EarthquakeVery High
Ice stormVery High
TornadoVery High
Cold waveRelatively High
DroughtRelatively High
Heat waveRelatively High
LightningRelatively High
Strong windRelatively High
HailRelatively Moderate
Riverine floodingRelatively Moderate
Winter weatherRelatively Moderate
HurricaneVery Low
LandslideVery Low
WildfireVery Low

FEMA National Risk Index (December 2025): expected annual losses from each hazard combined with social vulnerability and community resilience, rated relative to all U.S. census tracts. Hazards not listed are not applicable here. It describes the area, not a single building; flood insurance maps (FEMA FIRMs) decide flood-insurance requirements.

Live conditions: river gauges and flood levels · tornado warnings · wildfire detections · earthquakes — our sister maps, updated from NOAA, USGS and NASA every few minutes.

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.

Buying a home in Marked Tree? See the 2026 conforming, FHA and jumbo loan limits for Poinsett County →

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 72365

Who supplies drinking water to ZIP 72365?

Marked Tree Waterworks (EPA ID AR0000430), a groundwater (wells) system serving about 2,610 people.

Is there lead in Marked Tree, AR tap water?

The utility’s latest 90th-percentile lead result (Jan 2001) was 9 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 Marked Tree, AR 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 72365 had violations?

No health-based violations reported since 2016.

What natural hazards affect ZIP 72365?

FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively High; the highest-rated hazards are earthquake (very high), ice storm (very high), tornado (very high).

Are there Superfund sites near 72365?

No active Superfund site within 10 miles of the ZIP center.

Is radon a problem in Poinsett County?

Poinsett County 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.