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

Home hazard report for 71234 — Downsville, LA

ZIP 71234 is served by Holmesville Water System: 10 violations since 2016, latest lead result 0 ppb, PFAS not tested. Union Parish is in EPA radon zone 3.

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Where ZIP 71234 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: Holmesville Water System

EPA IDLA1111008
People served2,406
Sourcegroundwater (wells)
Connections802

Health-based violations

Contaminant or ruleHealth-based violations since 2016
Tthm10

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. All are listed as resolved or archived; the latest began Apr 2018.

Full record for Holmesville Water System →

Other systems overlapping this ZIP: Frost Town Water System.

Lead

Jan 20220 ppb
Jan 20191 ppb
Jan 20185 ppb
Jan 20121 ppb
Jul 20113 ppb
Jan 20104 ppb
Jul 200717 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 Union Parish

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 Moderate, with relatively low social vulnerability and relatively low community resilience.

Ice stormVery High
Strong windVery High
Heat waveRelatively High
TornadoRelatively High
HailRelatively Moderate
LightningRelatively Moderate
Riverine floodingRelatively Moderate
Cold waveRelatively Low
DroughtRelatively Low
EarthquakeRelatively Low
HurricaneRelatively Low
LandslideRelatively Low
WildfireRelatively Low
Winter weatherRelatively 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 71234

Who supplies drinking water to ZIP 71234?

Holmesville Water System (EPA ID LA1111008), a groundwater (wells) system serving about 2,406 people.

Is there lead in Downsville, LA tap water?

The utility’s latest 90th-percentile lead result (Jan 2022) 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 Downsville, LA 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 71234 had violations?

Health-based violations since 2016: Tthm. All are listed as resolved.

What natural hazards affect ZIP 71234?

FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Moderate; the highest-rated hazards are ice storm (very high), strong wind (very high), heat wave (relatively high).

Are there Superfund sites near 71234?

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

Is radon a problem in Union Parish?

Union Parish 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.