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Review government records associated with Winnemucca, Nevada.
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Preparing Winnemucca environmental records...
Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Winnemucca, NV from EPA SDWIS.
Winnemucca City of
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 8,518 people
Data from EPA SDWIS
Reviewed: source records as of Q1 2026
EPA UCMR5 — No PFAS detection records shown for these water systems
Open data source: EPA UCMR5DoD PFAS — No investigation records shown for this report
Open data source: DoD PFASEPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Rose Creek-Humboldt River
Reported: Nov 2026
Health-relevant causes: Mercury, Metals (other Than Mercury)
Affected uses: Drinkingwater, Ecological, Fishconsumption, Recreation
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
No NPDES-permitted facility records with current violation flags surfaced for this city report.
Reviewed: active/open records as of Q4 2025
Data from EPA ECHO
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
Humboldt County
Assessment year: 2020
According to EPA, a cancer risk of 10-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 10 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
No EPA nonattainment designation records shown for this report.
Reviewed: source records as of Q4 2025
Reviewed: source query run Nov 2026
Brownfield sites are properties where redevelopment is complicated by the presence of hazardous substances.
Open data source: Search EPA ECHO2 sites with active cleanup or investigation status
537 Melarkey Street, Winnemucca
Reported: Feb 2026
543 Melarkey Street, Winnemucca
Reported: Feb 2026
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Sites regulated by the Mine Safety and Health Administration, including mines, sand and gravel operations, and portable crushers. Status and type are from the MSHA Mine Data Retrieval System. Records with active/intermittent status dates older than 5 years are shown as older records rather than current active sites.
More MSHA records matched the search than this preview shows.
Recently updated active/intermittent sites (2)
Data from MSHA
Humboldt County, NV
EPA Radon Zone Map (June 2024 release)
Humboldt County is EPA Radon Zone 2 (moderate potential). EPA defines Zone 2 counties as having predicted average indoor screening levels between 2 pCi/L and 4 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
No FEMA flood-zone records shown for this report.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
EPA ECHO lists facilities linked to the Risk Management Program. Results include facilities with locations that can be matched. Records may be historical. Current operations, chemical inventories, and recent accident history are unverified.
Reviewed: 2000-present
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Humboldt County, NevadaPop. 17,272
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 10,328 | 8,317 | 7,972 |
| Poor or Fair Health | 18.7% | 17.8% | 14.2% |
| Poor Physical Health Days | 4.3 | 4.1 | 3.3 |
| Poor Mental Health Days | 5.7 | 5.5 | 4.8 |
| Adult Smoking | 18.7% | 15.3% | 15.0% |
| Adult Obesity | 35.4% | 31.5% | 34.0% |
| Air Pollution - Particulate Matter | 4.7 | 4.2 | 7.3 |
| Drinking water violation indicator | No | N/A | N/A |
| Diabetes Prevalence | 10.1% | 10.2% | 9.6% |
| Life Expectancy | 75.3 | 77.0 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Winnemucca.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 3 violations for the City of Winnemucca.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
We don't have air monitoring measurements for Winnemucca yet.
The radon data for Winnemucca covers Humboldt County. EPA places this area in Zone 2, with a predicted average indoor radon screening level of 2 to 4 picocuries per liter.
No Superfund sites were returned for this city report.
This city report shows 2 brownfield sites: 537 Melarkey Street; 543 Melarkey Street.
The county data for Winnemucca reports a life expectancy of 75.3 years in Humboldt County, Nevada.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Winnemucca reports 10,328 years of life lost to deaths before age 75 per 100,000 residents in Humboldt County, Nevada. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Winnemucca lists fine-particle pollution (PM2.5) at 4.7 micrograms per cubic meter in Humboldt County, Nevada.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.