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Preparing Rapid City environmental records...
Public environmental health records for water, air, land, infrastructure, incidents, and community indicators.
Toxin Scout summarizes public records from government and public datasets. Data can be delayed, incomplete, approximate, matched at non-parcel levels, or have accuracy problems as a result of this product's beta status, so verify important findings against the linked source records.
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Preparing Rapid City environmental records...
Drinking water compliance, PFAS records, natural water body health, discharge permits, and water-quality monitoring records for Rapid City.
Public water-system records for Rapid City, SD from EPA SDWIS.
Rapid Valley Sanitary District
PFAS above an official threshold detected in available EPA records.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 11,408 people
Rapid City
PFAS detected below the official threshold used by this report.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 72,009 people
Data from EPA SDWIS
PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records; EPA samples shown are from Mar 2024 to Jun 2025.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
1 PFAS sample result above EPA limits
Sample period: Dec 2024
UCMR5 results are sampled by public water system, not every household. Confirm your water provider before treating these as tap-water results for a specific address.
| Chemical | Concentration (µg/L) | EPA Limit (µg/L) | Sample date | Over Limit |
|---|---|---|---|---|
| PFOS | 0.0057 | 0.0040 | 2024-12-02 | Yes |
PFAS detections below EPA limits.
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Rapid City drinking-water detections. Record names come from the source database and can be broad.
Rapid City Airport Complex
Army · National Guard
Suspected PFAS record
Remedial investigation underway
Agricultural notifications (2023-2024): 12
Estimated investigation end date: 2029-09
Joint Forces Headquarters Sd
Army · National Guard
Suspected PFAS record
Preliminary assessment/site inspection underway
Estimated assessment end date: 2026-06
No health-relevant impaired water body records surfaced within 10 km in EPA ATTAINS.
Data from EPA ATTAINS
Reviewed: source records as of Q4 2025
Air quality data from EPA monitoring stations, facility emissions inventories, and area-level air-quality designations in this city.
Pennington County
Reported: Dec 2020
EPA national average is ~30 per million
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 local emission sources
Data from EPA AirToxScreen
This area meets EPA's National Ambient Air Quality Standards (NAAQS) for all criteria pollutants
No nonattainment designations apply to this location.
Black Hawk Elementary School Grounds
Annual mean: 12.5 μg/m³ · EPA standard: 150 μg/m³
Reported: Mar 2026
Annual mean: 0.1 ppm · EPA standard: 0.07 ppm
Annual standard context: 7 exceedance days recorded in the reporting period
Reported: Mar 2026
Credit Union — Rapid City, South Dakota
Annual mean: 6.9 μg/m³ · EPA standard: 9 μg/m³
Reported: Mar 2026
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.
Forterra Concrete Products - Rapid City
Reported: 2024
Gcc Dacotah
Reported: 2024
Contaminated sites, waste facilities, cleanup records, and industrial operations in this city.
Reviewed: source query run Jun 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
709 Steele Avenue, Rapid City
Reported: Feb 2026
108 East Main Street, Rapid City
Reported: Feb 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 underground storage tank records with active/open release status surfaced within 2 miles.
Data from EPA UST Finder
Toxic Release Inventory data — chemicals disposed on-site at reporting facilities.
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 FUDSReported: Jun 2026
Reported: Jun 2026
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.
Recently updated active/intermittent sites (2)
Data from MSHA
Pennington County, SD
Reported: Mar 2026
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.
Flood-map status, chemical accident risk, nuclear facilities, pipeline incidents, and community health indicators in this city.
Risk Management Program facilities handle extremely hazardous substances (e.g., chlorine, ammonia, propane). EPA requires these facilities to plan for worst-case chemical releases.
No facility records with recent chemical accidents surfaced for this property within the last five years.
Data from EPA ECHO
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
Reported: Jan 1, 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
Reported: Mar 2026
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking Water Violations
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 Violations | 1 | 0 | N/A |
| Diabetes Prevalence | 8.0% | 9.5% | 9.6% |
| Life Expectancy | 76.4 | 77.3 | 77.6 |