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

Home hazard report for 85359 — Quartzsite, AZ

ZIP 85359 is served by Town of Quartzsite: no health-based violations since 2016, latest lead result 9.9 ppb, PFAS not tested. La Paz is in EPA radon zone 2.

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Where ZIP 85359 is

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: Town of Quartzsite

EPA IDAZ0415346
People served2,761
Sourcegroundwater (wells)
Connections857

Health-based violations

No health-based violations reported since 2016.

Full record for Town of Quartzsite →

Lead

Jan 20249.9 ppb
Jan 20220 ppb
Jan 20210 ppb
Jan 20200 ppb
Jan 20190 ppb
Jan 20180 ppb
Jan 20170 ppb
Jan 20150 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 La Paz

EPA radon zone 2 — moderate potential. Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.

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.

Buying a home in Quartzsite? See the 2026 conforming, FHA and jumbo loan limits for La Paz →

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 85359

Who supplies drinking water to ZIP 85359?

Town of Quartzsite (EPA ID AZ0415346), a groundwater (wells) system serving about 2,761 people.

Is there lead in Quartzsite, AZ tap water?

The utility’s latest 90th-percentile lead result (Jan 2024) was 9.9 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 Quartzsite, AZ 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 85359 had violations?

No health-based violations reported since 2016.

Are there Superfund sites near 85359?

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

Is radon a problem in La Paz?

La Paz is in EPA radon zone 2 (moderate potential). Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.