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Review government records associated with South Sioux City, Nebraska.
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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 South Sioux City, NE from EPA SDWIS.
South Sioux City, 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 14,043 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.
Bacon Creek-Missouri River
Reported: Nov 2026
Health-relevant causes: Metals (other Than Mercury), Pathogens
Affected uses: Drinkingwater, 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
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.
Dakota 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.
Irving Elementry School — Sioux City, Iowa
Annual mean: 7.5 Micrograms/cubic meter (LC)
Observation year: 2025
Sioux City Stone State Park
Annual mean: 0.042 Parts per million
EPA primary exceedance count: 3 (Ozone 8-hour 2015)
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
Last inspected: Dec 2025
Last inspected: Dec 2025
Data from EPA ECHO
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
Empirical Foods (Ssc)
Reported: 2024
Ingredion
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 ECHO1 site with active cleanup or investigation status
Us 20 And C Avenue, South Sioux 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 release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Reviewed: reporting year 2024
No MSHA mine or extraction site records shown for this report.
Dakota County, NE
EPA Radon Zone Map (June 2024 release)
Dakota 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.
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)
NORTHERN NATURAL GAS CO
Incident date: Jul 7, 2024
Property damage: $50,000
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Dakota County, NebraskaPop. 21,042
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 | 6,522 | 6,820 | 7,972 |
| Poor or Fair Health | 17.6% | 13.3% | 14.2% |
| Poor Physical Health Days | 3.2 | 2.9 | 3.3 |
| Poor Mental Health Days | 4.0 | 4.3 | 4.8 |
| Adult Smoking | 16.4% | 13.9% | 15.0% |
| Adult Obesity | 40.4% | 36.3% | 34.0% |
| Air Pollution - Particulate Matter | 6.7 | 5.8 | 7.3 |
| Drinking water violation indicator | No | N/A | N/A |
| Diabetes Prevalence | 11.0% | 8.6% | 9.6% |
| Life Expectancy | 77.5 | 78.4 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in South Sioux City.
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 South Sioux City.
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 South Sioux City.
The monitoring station at Irving Elementry School, Sioux City, Iowa recorded an annual average of 7.5 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The monitoring station at Sioux City Stone State Park recorded an annual average of 0.042 Parts per million for ozone in 2025.
The radon data for South Sioux City covers Dakota 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 2 brownfield sites: Garwood Property; Olson 2 Property.
The county data for South Sioux City reports a life expectancy of 77.5 years in Dakota County, Nebraska.
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 South Sioux City reports 6,522 years of life lost to deaths before age 75 per 100,000 residents in Dakota County, Nebraska. 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 South Sioux City lists fine-particle pollution (PM2.5) at 6.7 micrograms per cubic meter in Dakota County, Nebraska.
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 Northern Natural Gas Co near South Sioux City on Jul 7, 2024. The reported release was natural gas.
Federal pipeline records list an incident involving Midamerican Energy Company near South Sioux City on Oct 18, 2010. The reported release was propane gas.