EPA data as of Oct 2026 · page updated 2026-10-29

Home hazard report for 58784 — Stanley, ND

ZIP 58784 is served by R & T Water System: no health-based violations since 2016, latest lead result 1.7 ppb, PFAS not tested. Mountrail County is in EPA radon zone 1.

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Where ZIP 58784 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: R & T Water System

EPA IDND5301152
People served1,003
Sourcesurface water (rivers, lakes)
Connections401

Health-based violations

No health-based violations reported since 2016.

Full record for R & T Water System →

Lead

Jan 20221.7 ppb
Jan 20190 ppb
Jan 20161.8 ppb
Jan 20130.6 ppb
Jan 20123.4 ppb
Jan 20110.6 ppb
Jan 20102.2 ppb
Jul 20090 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 Mountrail County

EPA radon zone 1 — highest potential. Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.

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 moderate social vulnerability and very low community resilience.

Cold waveVery High
HailVery High
Ice stormVery High
Winter weatherVery High
LightningRelatively High
Strong windRelatively High
TornadoRelatively High
WildfireRelatively High
Riverine floodingRelatively Moderate
DroughtRelatively Low
Heat waveRelatively Low
LandslideRelatively Low
EarthquakeVery 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.

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 58784

Who supplies drinking water to ZIP 58784?

R & T Water System (EPA ID ND5301152), a surface water (rivers, lakes) system serving about 1,003 people.

Is there lead in Stanley, ND tap water?

The utility’s latest 90th-percentile lead result (Jan 2022) was 1.7 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 Stanley, ND 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 58784 had violations?

No health-based violations reported since 2016.

What natural hazards affect ZIP 58784?

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

Are there Superfund sites near 58784?

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

Is radon a problem in Mountrail County?

Mountrail County is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.