Public water system · MN5020307
ActiveHam Lake One Stop
At a glance
Ham Lake One Stop (PWSID MN5020307) is an active transient non-community water system in Anoka County, Minnesota. It reports serving 100 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; all are health-based, and the most recent began in February 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
100
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Ham Lake One Stop compare with other water systems in Anoka County?
By EPA's size categories, Ham Lake One Stop is a very small system (500 people or fewer). Anoka County has 241 active public water systems. Its population served is well below the county average of 1,360 people per system, and accounts for less than 0.1% of the 327,753 people reported by systems filed under the county. Across Minnesota, the 6,465 active systems average 820 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Ham Lake One Stop is about 31% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Minnesota has 5,008 active transient non-community water systems, 77% 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 Ham Lake One Stop?
EPA lists Ham Lake One Stop as privately owned. 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. 195 of the 241 active systems in Anoka County (81%) are also privately owned.
Does Ham Lake One Stop have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in February 2010. The violations listed here began between January 1999 and February 2010. By type: 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2010-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1999-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 2 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.
Ham Lake One Stop: frequently asked questions
Who runs Ham Lake One Stop?
Ham Lake One Stop (PWSID MN5020307) is a transient non-community water system privately owned. It is regulated by the MN state drinking water program.
How many people does Ham Lake One Stop serve?
Ham Lake One Stop reports serving 100 people through 2 service connections in Anoka County, Minnesota.
Where does Ham Lake One Stop 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 Ham Lake One Stop have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in February 2010. 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 Ham Lake One Stop'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 2 violations for this system; all are health-based, and the most recent began in February 2010. For current results, consult EPA ECHO, or the MN state drinking water program.
Where can I find Ham Lake One Stop's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ham Lake One Stop is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Anoka County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Blaine | Anoka | 70,220 | Community | Groundwater |
| Coon Rapids | Anoka | 64,000 | Community | Groundwater |
| Fridley | Anoka | 27,476 | Community | Groundwater |
| Columbia Heights | Anoka | 22,278 | Community | Purchased surface water |
| Andover | Anoka | 21,455 | Community | Groundwater |
| Lino Lakes | Anoka | 17,859 | Community | Groundwater |
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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, “Ham Lake One Stop, PWSID MN5020307, Minnesota”, https://aquacensus.com/water-systems/minnesota/ham-lake-one-stop-mn5020307 (data as of October 1, 2026).