Public water system · 055294902
ActiveUpper Sioux Community
At a glance
Upper Sioux Community (PWSID 055294902) is an active community water system in Minnesota. It reports serving 1,900 people through 71 service connections. Its primary water source is groundwater, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,900
Service connections
71
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Upper Sioux Community compare with other water systems in Minnesota?
By EPA's size categories, Upper Sioux Community is a small system (501 to 3,300 people). Across Minnesota, the 6,465 active systems average 820 people each. Nationally, the average active community water system reports serving 6,703 people, so Upper Sioux Community is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Minnesota has 987 active community water systems, 15% of the state's 6,465 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,261 Minnesota systems (97%) list groundwater as their primary source.
Who owns and regulates Upper Sioux Community?
EPA lists Upper Sioux Community as Native American-owned. The EPA Region 05 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Upper Sioux Community have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2024. The violations listed here began between January 2024 and January 2024. By type: 12 monitoring and reporting. The contaminants or rules involved are Beryllium, Asbestos, Cyanide and Antimony. EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Berylliumcode 1075 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Asbestoscode 1094 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Antimonycode 1074 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nickelcode 1036 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2024-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Upper Sioux Community: frequently asked questions
Who runs Upper Sioux Community?
Upper Sioux Community (PWSID 055294902) is a community water system Native American-owned. It is regulated by the EPA Region 05.
How many people does Upper Sioux Community serve?
Upper Sioux Community reports serving 1,900 people through 71 service connections in Minnesota.
Where does Upper Sioux Community get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Upper Sioux Community have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2024. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Upper Sioux Community's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the EPA Region 05.
Where can I find Upper Sioux Community's water quality report?
As a community water system, Upper Sioux Community must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Minnesota
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Minneapolis | Hennepin | 425,300 | Community | Surface water |
| Saint Paul Regional Water Services | Ramsey | 392,529 | Community | Surface water |
| Rochester | Olmsted | 123,624 | Community | Groundwater |
| Bloomington | Hennepin | 91,300 | Community | Purchased surface water |
| Brooklyn Park | Hennepin | 89,995 | Community | Groundwater |
| Duluth | St. Louis | 86,859 | Community | Surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Upper Sioux Community, PWSID 055294902, Minnesota”, https://aquacensus.com/water-systems/minnesota/upper-sioux-community-055294902 (data as of October 1, 2026).