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Review government records associated with North Liberty, Iowa.
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Preparing North Liberty 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 North Liberty, IA from EPA SDWIS.
North Liberty Water Supply
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 20,491 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.
Ralston Creek-Iowa River
Reported: Nov 2026
Health-relevant causes: Pathogens, Toxic Organics
Affected uses: Drinkingwater, Ecological, Other, 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.
Johnson 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.
Iowa City, Hoover Sch.
Annual mean: 8.4 Micrograms/cubic meter (LC)
Observation year: 2025
Mckinley Steam — Cedar Rapids, Iowa
Annual mean: 7.7 Micrograms/cubic meter (LC)
Observation year: 2025
Public Health — Cedar Rapids, Iowa
Annual mean: 1.9 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.
Air Violations
Last inspected: Dec 2025
Data from EPA ECHO
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
Johnson County, IA
EPA Radon Zone Map (June 2024 release)
Johnson 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.
EPA ECHO lists facilities linked to the Risk Management Program. Results include facilities with locations that can be matched. Records may be historical. Current operations, chemical inventories, and recent accident history are unverified.
Reviewed: 2000-present
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Johnson County, IowaPop. 156,420
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 | 4,797 | 6,935 | 7,972 |
| Poor or Fair Health | 11.6% | 12.5% | 14.2% |
| Poor Physical Health Days | 2.8 | 2.9 | 3.3 |
| Poor Mental Health Days | 4.8 | 4.5 | 4.8 |
| Adult Smoking | 14.0% | 15.5% | 15.0% |
| Adult Obesity | 33.3% | 36.9% | 34.0% |
| Air Pollution - Particulate Matter | 9.6 | 7.4 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 8.3% | 8.5% | 9.6% |
| Life Expectancy | 82.0 | 78.1 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in North Liberty.
Check with the utility that serves your address for its testing results.
The EPA drinking water records available here list no violations for North Liberty Water Supply.
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 North Liberty.
The monitoring station at Iowa City, Hoover Sch. recorded an annual average of 8.4 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The monitoring station at McKinley Steam, Cedar Rapids, Iowa recorded an annual average of 7.7 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The monitoring station at Public Health, Cedar Rapids, Iowa recorded an annual average of 1.9 Parts per billion for sulfur dioxide in 2025.
The radon data for North Liberty covers Johnson 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 North Liberty reports a life expectancy of 82.0 years in Johnson County, Iowa.
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 North Liberty reports 4,797 years of life lost to deaths before age 75 per 100,000 residents in Johnson County, Iowa. 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 North Liberty lists fine-particle pollution (PM2.5) at 9.6 micrograms per cubic meter in Johnson County, Iowa.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.