Public water system · MO2182824
ActiveWren Assoc
At a glance
Wren Assoc (PWSID MO2182824) is an active non-transient non-community water system in Cole County, Missouri. It reports serving 40 people through 1 service connection. 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 October 2007.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Wren Assoc compare with other water systems in Cole County?
By EPA's size categories, Wren Assoc is a very small system (500 people or fewer). Cole County has 17 active public water systems. Its population served is well below the county average of 4,341 people per system, and accounts for less than 0.1% of the 73,799 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Wren Assoc is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Missouri has 228 active non-transient non-community water systems, 7.7% of the state's 2,943 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,521 Missouri systems (86%) list groundwater as their primary source.
Who owns and regulates Wren Assoc?
EPA lists Wren Assoc as privately owned. The MO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 9 of the 17 active systems in Cole County (53%) are also privately owned.
Does Wren Assoc have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 2007. 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 |
|---|---|---|---|---|
| 2007-10-01 | 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.
Wren Assoc: frequently asked questions
Who runs Wren Assoc?
Wren Assoc (PWSID MO2182824) is a non-transient non-community water system privately owned. It is regulated by the MO state drinking water program.
How many people does Wren Assoc serve?
Wren Assoc reports serving 40 people through 1 service connection in Cole County, Missouri.
Where does Wren Assoc 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 Wren Assoc have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 2007. 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 Wren Assoc'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 October 2007. For current results, consult EPA ECHO, or the MO state drinking water program.
Where can I find Wren Assoc's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Wren Assoc is a non-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 Cole County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mo American Jefferson City District | Cole | 30,075 | Community | Surface water |
| Cole County Pwsd 1 | Cole | 16,548 | Community | Groundwater |
| Cole County Pwsd 2 | Cole | 13,107 | Community | Groundwater |
| Cole County Pwsd 4 | Cole | 7,568 | Community | Groundwater |
| Cole County Pwsd 3 | Cole | 2,000 | Community | Groundwater |
| Mo American Wardsville | Cole | 1,506 | 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, “Wren Assoc, PWSID MO2182824, Missouri”, https://aquacensus.com/water-systems/missouri/wren-assoc-mo2182824 (data as of October 1, 2026).