Public water system · MN5020571
ActiveStone Development Company
At a glance
Stone Development Company (PWSID MN5020571) is an active transient non-community water system in Anoka County, Minnesota. It reports serving 40 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is health-based, and the most recent began in August 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Stone Development Company compare with other water systems in Anoka County?
By EPA's size categories, Stone Development Company 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 Stone Development Company is well 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 Stone Development Company?
EPA lists Stone Development Company 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 Stone Development Company have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in August 2009. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 2009-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The one violation in EPA's records.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.
Stone Development Company: frequently asked questions
Who runs Stone Development Company?
Stone Development Company (PWSID MN5020571) is a transient non-community water system privately owned. It is regulated by the MN state drinking water program.
How many people does Stone Development Company serve?
Stone Development Company reports serving 40 people through 3 service connections in Anoka County, Minnesota.
Where does Stone Development Company 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 Stone Development Company have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in August 2009. 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 Stone Development Company'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 one violation for this system; it is health-based, and the most recent began in August 2009. For current results, consult EPA ECHO, or the MN state drinking water program.
Where can I find Stone Development Company's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Stone Development Company 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, “Stone Development Company, PWSID MN5020571, Minnesota”, https://aquacensus.com/water-systems/minnesota/stone-development-company-mn5020571 (data as of October 1, 2026).