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Review government records associated with Lander, Wyoming.
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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 Lander, WY from EPA SDWIS.
Lander, 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 7,615 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.
Lower Middle Popo Agie River
Reported: Nov 2026
Health-relevant causes: Pathogens
Affected uses: 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.
Fremont 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.
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
56-013-0006 — Riverton, Wyoming
Annual mean: 10.8 Micrograms/cubic meter (25 C)
Observation year: 2025
Annual mean: 3.0 Micrograms/cubic meter (LC)
Observation year: 2025
Lander Slam Site
Annual mean: 5.0 Micrograms/cubic meter (LC)
Observation year: 2025
Data from EPA AQS
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 ECHO1 site with active cleanup or investigation status
626 Washington Street, Lander
Reported: Feb 2026
Release reports
Reported: Dec 2021
Data from EPA UST Finder
Formerly Used Defense Sites are properties previously owned by, leased to, or otherwise possessed by the United States and under the jurisdiction of the Secretary of Defense. The FUDS program addresses environmental restoration at these properties.
Open data source: USACE FUDSSites 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.
No records shown in this group.
Reviewed: status dates within last 5 years
Data from MSHA
Fremont County, WY
EPA Radon Zone Map (June 2024 release)
Fremont County is EPA Radon Zone 1 (highest potential). EPA defines Zone 1 counties as having predicted average indoor screening levels above 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.
Minimal flood hazard — outside the 1% and 0.2% annual chance floodplains.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
No EPA ECHO RMP facility records with a usable location matched this city report.
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Fremont County, WyomingPop. 39,472
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 | 16,275 | 8,747 | 7,972 |
| Poor or Fair Health | 15.8% | 12.9% | 14.2% |
| Poor Physical Health Days | 3.8 | 3.5 | 3.3 |
| Poor Mental Health Days | 5.0 | 4.9 | 4.8 |
| Adult Smoking | 19.7% | 17.1% | 15.0% |
| Adult Obesity | 32.8% | 32.2% | 34.0% |
| Air Pollution - Particulate Matter | 6.6 | 3.6 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 9.6% | 7.6% | 9.6% |
| Life Expectancy | 71.2 | 76.8 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Lander.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 14 violations for the City of Lander.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Lander.
The monitoring station at 56-013-0006, Riverton, Wyoming recorded an annual average of 10.8 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The monitoring station at 56-013-0006, Riverton, Wyoming recorded an annual average of 3 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The monitoring station at Lander Slam site recorded an annual average of 5 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The radon data for Lander covers Fremont County. EPA places this area in Zone 1, with a predicted average indoor radon screening level above 4 picocuries per liter.
No Superfund sites were returned for this city report.
This city report shows 1 brownfield site: Fcsd 2.
The county data for Lander reports a life expectancy of 71.2 years in Fremont County, Wyoming.
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 Lander reports 16,275 years of life lost to deaths before age 75 per 100,000 residents in Fremont County, Wyoming. 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 Lander lists fine-particle pollution (PM2.5) at 6.6 micrograms per cubic meter in Fremont County, Wyoming.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.