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Review government records associated with Star, Idaho.
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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 Star, ID from EPA SDWIS.
Star Sewer and Water Dist Water System
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
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.
Mill Slough-Boise River
Reported: Nov 2026
Health-relevant causes: Pathogens, Pesticides
Affected uses: Ecological, 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.
Ada County
Assessment year: 2020
According to EPA, a cancer risk of 40-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 40 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
EPA designates an area as nonattainment when air quality does not meet federal health-based standards (NAAQS) for a specific pollutant.
Maintenance areas
Previously nonattainment; currently meeting the standard and monitored under an EPA maintenance plan.
Ada County; Boise
PM10 · PM-10 (1987 Standard)
Classification: Moderate
Original designation: Mar 1999
Boise-Northern Ada County Area
CO · Carbon Monoxide (1971 Standard)
Classification: Not Classified
Original designation: Nov 1990
Current design value: 1.5 ppm (2023-2025)
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Ada County Fairgrounds, Across Intersection of Alworth and Lorimar — Boise, Idaho
Annual mean: 17.1 Micrograms/cubic meter (25 C)
Observation year: 2025
Boise - White Pine Elementary — Boise, Idaho
Annual mean: 0.051 Parts per million
Observation year: 2025
Meridian - St. Luke's
Annual mean: 0.1 Parts per million
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
Reviewed: source query run Nov 2026
Reviewed: source query run Nov 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.
No records shown in this group.
Reviewed: status dates within last 5 years
Data from MSHA
Ada County, ID
EPA Radon Zone Map (June 2024 release)
Ada 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.
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.
No records dated within the last 5 years surfaced for this city report.
Reviewed: last 5 years
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Ada County, IdahoPop. 518,907
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 | 5,412 | 6,827 | 7,972 |
| Poor or Fair Health | 11.5% | 13.0% | 14.2% |
| Poor Physical Health Days | 3.0 | 3.3 | 3.3 |
| Poor Mental Health Days | 4.8 | 4.7 | 4.8 |
| Adult Smoking | 12.3% | 13.8% | 15.0% |
| Adult Obesity | 28.5% | 32.1% | 34.0% |
| Air Pollution - Particulate Matter | 5.4 | 5.2 | 7.3 |
| Drinking water violation indicator | No | N/A | N/A |
| Diabetes Prevalence | 7.8% | 8.8% | 9.6% |
| Life Expectancy | 80.0 | 78.4 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Star.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 2 violations for Star Sewer and Water Dist Water System.
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 Star.
The monitoring station at Ada County Fairgrounds, Across Intersection of Alworth and Lorimar, Boise (corporate name Boise City), Idaho recorded an annual average of 17.1 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The monitoring station at Boise-White Pine Elementary, Boise (corporate name Boise City), Idaho recorded an annual average of 0.051 Parts per million for ozone in 2025.
The monitoring station at Meridian-St. Luke's recorded an annual average of 0.1 Parts per million for carbon monoxide in 2025.
The radon data for Star covers Ada 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 or brownfield sites were returned for this city report.
The county data for Star reports a life expectancy of 80.0 years in Ada County, Idaho.
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 Star reports 5,412 years of life lost to deaths before age 75 per 100,000 residents in Ada County, Idaho. 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 Star lists fine-particle pollution (PM2.5) at 5.4 micrograms per cubic meter in Ada County, Idaho.
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 Intermountain Gas Co near Star on Dec 14, 2016. The reported release was natural gas.