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

Home hazard report for 59004 — Ashland, MT

ZIP 59004 is served by Ashland Water and Sewer District: 1 violation since 2016, latest lead result 8 ppb, PFAS not tested. Rosebud is in EPA radon zone 1.

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Where ZIP 59004 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: Ashland Water and Sewer District

EPA IDMT0000458
People served400
Sourcegroundwater (wells)
Connections98

Health-based violations

Contaminant or ruleHealth-based violations since 2016
Revised Total Coliform Rule1

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 Aug 2023.

Full record for Ashland Water and Sewer District →

Lead

Jan 20238 ppb
Jan 20195 ppb
Jan 20155 ppb
Jan 20111 ppb
Jan 20052 ppb
Jul 20025 ppb
Jan 19995 ppb
Jan 19964 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 Rosebud

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 →

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 Ashland? See the 2026 conforming, FHA and jumbo loan limits for Rosebud →

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 59004

Who supplies drinking water to ZIP 59004?

Ashland Water and Sewer District (EPA ID MT0000458), a groundwater (wells) system serving about 400 people.

Is there lead in Ashland, MT tap water?

The utility’s latest 90th-percentile lead result (Jan 2023) was 8 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 Ashland, MT 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 59004 had violations?

Health-based violations since 2016: Revised Total Coliform Rule. All are listed as resolved.

Are there Superfund sites near 59004?

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

Is radon a problem in Rosebud?

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