Public water system · MO3010409
ActiveMo American Jefferson City District
At a glance
Mo American Jefferson City District (PWSID MO3010409) is an active community water system in Cole County, Missouri. It reports serving 30,075 people through 10,875 service connections. Its primary water source is surface water, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 1988.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
30,075
Service connections
10,875
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Mo American Jefferson City District compare with other water systems in Cole County?
By EPA's size categories, Mo American Jefferson City District is a large system (10,001 to 100,000 people). Cole County has 17 active public water systems, and Mo American Jefferson City District is the largest of them by population served. Its population served is about 6.9 times the county average of 4,341 people per system, and accounts for 41% 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 community water system reports serving 6,703 people, so Mo American Jefferson City District is about 4.5 times 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. Missouri has 1,612 active community water systems, 55% of the state's 2,943 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 60 Missouri systems (2%) list surface water as their primary source.
Who owns and regulates Mo American Jefferson City District?
EPA lists Mo American Jefferson City District 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 Mo American Jefferson City District have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 1988. The violations listed here began between July 1988 and July 1988. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Benzene (2 of them). 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 |
|---|---|---|---|---|
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 1988-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | 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.
Mo American Jefferson City District: frequently asked questions
Who runs Mo American Jefferson City District?
Mo American Jefferson City District (PWSID MO3010409) is a community water system privately owned. It is regulated by the MO state drinking water program.
How many people does Mo American Jefferson City District serve?
Mo American Jefferson City District reports serving 30,075 people through 10,875 service connections in Cole County, Missouri.
Where does Mo American Jefferson City District get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Mo American Jefferson City District 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 July 1988. 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 Mo American Jefferson City District'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 July 1988. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Mo American Jefferson City District's water quality report?
As a community water system, Mo American Jefferson City District 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 Cole County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| 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 |
| Russellville Pws | Cole | 800 | 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, “Mo American Jefferson City District, PWSID MO3010409, Missouri”, https://aquacensus.com/water-systems/missouri/mo-american-jefferson-city-district-mo3010409 (data as of October 1, 2026).