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Review government records associated with Mandan, North Dakota.
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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 Mandan, ND from EPA SDWIS.
Mandan City of
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 21,769 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 Mandan-Heart River
Reported: Nov 2026
Health-relevant causes: Pathogens
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.
Morton 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.
Bismarck Residential
Annual mean: 0.1 Parts per million
Observation year: 2025
Annual mean: 1.3 Parts per billion
Observation year: 2025
Annual mean: 8.7 Parts per billion
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.
Marathon Mandan Refinery
Reported: 2024
Reviewed: source query run Nov 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
City Center, Mandan
Reported: Feb 2026
905 8th Avenue Northwest, Mandan
Reported: Feb 2026
Release reports
Reported: Dec 2021
Data from EPA UST Finder
Toxics Release Inventory data — chemicals disposed on-site at reporting facilities.
Marathon Mandan Refinery
Open data source: View EPA TRI facility recordStrata Corp - Strata Concrete Mandan 2
Open data source: View EPA TRI facility recordNo MSHA mine or extraction site records shown for this report.
Morton County, ND
EPA Radon Zone Map (June 2024 release)
Morton 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.
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: Jan 18, 2023
Property damage: $270
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Morton County, North DakotaPop. 33,710
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 | 7,727 | 7,634 | 7,972 |
| Poor or Fair Health | 13.0% | 12.5% | 14.2% |
| Poor Physical Health Days | 3.0 | 3.1 | 3.3 |
| Poor Mental Health Days | 4.1 | 4.0 | 4.8 |
| Adult Smoking | 15.4% | 15.9% | 15.0% |
| Adult Obesity | 39.9% | 35.7% | 34.0% |
| Air Pollution - Particulate Matter | 5.5 | 5.0 | 7.3 |
| Drinking water violation indicator | No | N/A | N/A |
| Diabetes Prevalence | 8.4% | 8.8% | 9.6% |
| Life Expectancy | 77.2 | 78.1 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Mandan.
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 Mandan.
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 Mandan.
The monitoring station at Bismarck Residential recorded an annual average of 0.1 Parts per million for carbon monoxide in 2025.
The monitoring station at Bismarck Residential recorded an annual average of 1.3 Parts per billion for sulfur dioxide in 2025.
The monitoring station at Bismarck Residential recorded an annual average of 8.7 Parts per billion for nitrogen dioxide in 2025.
The radon data for Mandan covers Morton County. EPA places this area in Zone 1, with a predicted average indoor radon screening level above 4 picocuries per liter.
No Superfund sites were returned for this city report.
This city report shows 3 brownfield sites: Froelich Oil Lot; Mandan Central Business Districe; Mandan High School.
EPA Superfund recordsView on EPA ECHOView on EPA ECHOView on EPA ECHO
The county data for Mandan reports a life expectancy of 77.2 years in Morton County, North 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 Mandan reports 7,727 years of life lost to deaths before age 75 per 100,000 residents in Morton County, North 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 Mandan lists fine-particle pollution (PM2.5) at 5.5 micrograms per cubic meter in Morton County, North 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 Mandan on Jan 18, 2023. The reported release was natural gas.
Federal pipeline records list an incident involving Tesoro High Plains Pipeline Company LLC near Mandan on Apr 8, 2017. The reported release was crude oil.