Public water system · MN1130018
ActiveWyoming
At a glance
Wyoming (PWSID MN1130018) is an active community water system in Chisago County, Minnesota. It reports serving 3,990 people through 1,497 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in January 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,990
Service connections
1,497
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Wyoming compare with other water systems in Chisago County?
By EPA's size categories, Wyoming is a medium system (3,301 to 10,000 people). Chisago County has 104 active public water systems, and Wyoming is the 3rd-largest of them by population served. Its population served is about 9.8 times the county average of 406 people per system, and accounts for 9.5% of the 42,180 people reported by systems filed under the county. Across Minnesota, the 6,465 active systems average 820 people each. Nationally, the average active community water system reports serving 6,703 people, so Wyoming is about 40% 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 Wyoming?
EPA lists Wyoming as owned by a local government. The MN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 17 of the 104 active systems in Chisago County (16%) are also owned by a local government.
Does Wyoming have drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in January 2021. The violations listed here began between October 1991 and January 2021. By type: 5 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 3 as resolved and 3 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2021-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-10-06 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 1992-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 6 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.
Wyoming: frequently asked questions
Who runs Wyoming?
Wyoming (PWSID MN1130018) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Wyoming serve?
Wyoming reports serving 3,990 people through 1,497 service connections in Chisago County, Minnesota.
Where does Wyoming 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 Wyoming have any drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in January 2021. 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 Wyoming'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. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in January 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Wyoming's water quality report?
As a community water system, Wyoming 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 Chisago County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| North Branch | Chisago | 6,863 | Community | Groundwater |
| Lindstrom | Chisago | 4,938 | Community | Groundwater |
| Chisago City | Chisago | 3,745 | Community | Groundwater |
| Rush City | Chisago | 3,339 | Community | Groundwater |
| Interstate State Park | Chisago | 2,000 | Transient non-community | Groundwater |
| Pinehaven Farm | Chisago | 2,000 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Wyoming, PWSID MN1130018, Minnesota”, https://aquacensus.com/water-systems/minnesota/wyoming-mn1130018 (data as of October 1, 2026).