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Review government records associated with Rock Springs, 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 Rock Springs, WY from EPA SDWIS.
Rock Springs, City of
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
Purchased or imported water record · Serves 24,000 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.
Town of Rock Springs-Bitter Creek
Reported: Nov 2026
Health-relevant causes: Pathogens
Affected uses: Ecological, 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
Last inspected: Dec 2025
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.
Sweetwater 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.
56-037-0029 — Rock Springs, Wyoming
Annual mean: 1.2 Parts per billion
Includes measurements flagged for exceptional events.
Observation year: 2025
Annual mean: 14.0 Parts per billion
Observation year: 2025
Annual mean: 0.047 Parts per million
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
P4 Production LLC
Reported: 2024
Pacificorp Jim Bridger Plant & Bridger Coal Co
Reported: 2024
Simplot Phosphates LLC
Reported: 2024
Reviewed: source query run Nov 2026
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
Release reports
Reported: Dec 2021
Reported: Dec 2021
Data from EPA UST Finder
Toxics Release Inventory data — chemicals disposed on-site at reporting facilities.
P4 Production LLC
Open data source: View EPA TRI facility recordPacificorp Jim Bridger Plant & Bridger Coal Co
Open data source: View EPA TRI facility recordSimplot Phosphates LLC
Open data source: View EPA TRI facility recordSites 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 (1)
Data from MSHA
Sweetwater County, WY
EPA Radon Zone Map (June 2024 release)
Sweetwater 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.
No FEMA flood-zone records shown for this report.
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.
Sweetwater County, WyomingPop. 41,345
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 | 9,732 | 8,747 | 7,972 |
| Poor or Fair Health | 14.4% | 12.9% | 14.2% |
| Poor Physical Health Days | 3.6 | 3.5 | 3.3 |
| Poor Mental Health Days | 5.2 | 4.9 | 4.8 |
| Adult Smoking | 17.8% | 17.1% | 15.0% |
| Adult Obesity | 34.3% | 32.2% | 34.0% |
| Air Pollution - Particulate Matter | 4.5 | 3.6 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 8.8% | 7.6% | 9.6% |
| Life Expectancy | 75.2 | 76.8 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Rock Springs.
Check with the utility that serves your address for its testing results.
The EPA drinking water records available here list no violations for the City of Rock Springs.
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 Rock Springs.
The monitoring station at 56-037-0029, Rock Springs, Wyoming recorded an annual average of 1.2 Parts per billion for sulfur dioxide in 2025.
The monitoring station at 56-037-0029, Rock Springs, Wyoming recorded an annual average of 14 Parts per billion for nitrogen dioxide in 2025.
The monitoring station at 56-037-0029, Rock Springs, Wyoming recorded an annual average of 0.047 Parts per million for ozone in 2025.
The radon data for Rock Springs covers Sweetwater County. EPA places this area in Zone 1, with a predicted average indoor radon screening level above 4 picocuries per liter.
No Superfund or brownfield sites were returned for this city report.
The county data for Rock Springs reports a life expectancy of 75.2 years in Sweetwater 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 Rock Springs reports 9,732 years of life lost to deaths before age 75 per 100,000 residents in Sweetwater 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 Rock Springs lists fine-particle pollution (PM2.5) at 4.5 micrograms per cubic meter in Sweetwater County, Wyoming.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.