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Review government records associated with Box Elder, South Dakota.
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Preparing Box Elder 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 Box Elder, SD from EPA SDWIS.
Box Elder
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 14,000 people
Data from EPA SDWIS
PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
No EPA UCMR5 PFAS detection records shown for these water systems.
Reviewed: source records as of Q1 2026
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Box Elder drinking-water detections. Record names come from the source database and can be broad.
Ellsworth Afb
Air Force · Active
Known detection in the DoD source record
Remedial investigation underway
Estimated investigation end date: 2032-06
EPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Ellsworth Air Force Base-Boxelder Creek
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.
Violation records
Last inspected: Dec 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.
Pennington County
Assessment year: 2020
According to EPA, a cancer risk of 20-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 20 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.
Black Hawk Elementary School Grounds
Annual mean: 0.039 Parts per million
Observation year: 2025
Annual mean: 8.8 Micrograms/cubic meter (25 C)
Observation year: 2025
Credit Union — Rapid City, South Dakota
Annual mean: 0.2 Parts per billion
Observation year: 2025
Data from EPA AQS
Facilities regulated under the Clean Air Act. CAA HPV flags indicate serious noncompliance such as exceeding emission limits.
No facility records with active violation or noncompliance flags surfaced in EPA ECHO.
Reviewed: active/open records as of Q4 2025
Data from EPA ECHO
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
U.S. Dod USAF, Ellsworth Afb
Reported: 2024
EPA records for current, proposed and formerly listed Superfund sites on the National Priorities List (NPL).
Open data source: Search EPA ECHOEPA FRS Registry ID 110071101503
Reported: Nov 2021
Reviewed: source query run Nov 2026
Facilities with hazardous-waste handler records under RCRA in the reviewed 5-mile city-center search area. Active handler status is separate from air, water, or other ECHO compliance violations, which are shown in their own sections.
Active RCRA handler records in the reviewed city search area
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Reviewed: reporting year 2024
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
Pennington County, SD
EPA Radon Zone Map (June 2024 release)
Pennington 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.
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.
PHMSA tracks incidents involving natural gas and hazardous liquid pipelines. Incidents include leaks, ruptures, and explosions.
Recent Incidents (last 5 years)
MONTANA - DAKOTA UTILITIES CO
Incident date: Feb 10, 2023
Property damage: $500
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Pennington County, South DakotaPop. 114,461
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 | 10,171 | 8,483 | 7,972 |
| Poor or Fair Health | 12.2% | 12.9% | 14.2% |
| Poor Physical Health Days | 2.8 | 2.8 | 3.3 |
| Poor Mental Health Days | 4.3 | 3.9 | 4.8 |
| Adult Smoking | 16.5% | 16.3% | 15.0% |
| Adult Obesity | 35.8% | 38.9% | 34.0% |
| Air Pollution - Particulate Matter | 5.9 | 4.8 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 8.0% | 9.5% | 9.6% |
| Life Expectancy | 76.4 | 77.3 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Box Elder.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 9 violations for Box Elder.
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 Box Elder.
The monitoring station at Black Hawk Elementary School Grounds recorded an annual average of 0.039 Parts per million for ozone in 2025.
The monitoring station at Black Hawk Elementary School Grounds recorded an annual average of 8.8 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The monitoring station at Credit Union, Rapid City, South Dakota recorded an annual average of 0.2 Parts per billion for sulfur dioxide in 2025.
The radon data for Box Elder covers Pennington County. EPA places this area in Zone 2, with a predicted average indoor radon screening level of 2 to 4 picocuries per liter.
This city report shows 1 Superfund site: Ellsworth Air Force Base.
No brownfield sites were returned for this city report.
The county data for Box Elder reports a life expectancy of 76.4 years in Pennington County, South Dakota.
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 Box Elder reports 10,171 years of life lost to deaths before age 75 per 100,000 residents in Pennington County, South Dakota. 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 Box Elder lists fine-particle pollution (PM2.5) at 5.9 micrograms per cubic meter in Pennington County, South Dakota.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
Federal pipeline records list an incident involving Montana-Dakota Utilities Co near Box Elder on Feb 10, 2023. The reported release was natural gas.
Federal pipeline records list an incident involving Montana-Dakota Utilities Co near Box Elder on Mar 5, 2018. The reported release was natural gas.