Public water system · MO6220265
ActiveWashington Airport
At a glance
Washington Airport (PWSID MO6220265) is an active transient non-community water system in Warren County, Missouri. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Washington Airport compare with other water systems in Warren County?
By EPA's size categories, Washington Airport is a very small system (500 people or fewer). Warren County has 27 active public water systems. Its population served is well below the county average of 749 people per system, and accounts for 0.1% of the 20,217 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Washington Airport 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. Missouri has 1,103 active transient non-community water systems, 37% 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 Washington Airport?
EPA lists Washington Airport as owned by a local government. 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 27 active systems in Warren County (33%) are also owned by a local government.
Does Washington Airport have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 2010. The violations listed here began between March 1995 and September 2010. By type: 3 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 as resolved and 1 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 |
|---|---|---|---|---|
| 2010-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-08-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 1995-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 3 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.
Washington Airport: frequently asked questions
Who runs Washington Airport?
Washington Airport (PWSID MO6220265) is a transient non-community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Washington Airport serve?
Washington Airport reports serving 25 people through 1 service connection in Warren County, Missouri.
Where does Washington Airport 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 Washington Airport have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 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 Washington Airport'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 3 violations for this system; none is health-based, and the most recent began in September 2010. For current results, consult EPA ECHO, or the MO state drinking water program.
Where can I find Washington Airport's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Washington Airport 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 Warren County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Warrenton Pws | Warren | 8,208 | Community | Groundwater |
| St Charles Co Pwsd #2 Wright City | Warren | 3,550 | Community | Groundwater |
| Marthasville Pws | Warren | 1,200 | Community | Groundwater |
| St Charles County Pwsd 2 Warren | Warren | 1,192 | Community | Groundwater |
| American Foods Group | Warren | 1,100 | Non-transient non-community | Groundwater |
| Lake Sherwood Subd | Warren | 1,100 | 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, “Washington Airport, PWSID MO6220265, Missouri”, https://aquacensus.com/water-systems/missouri/washington-airport-mo6220265 (data as of October 1, 2026).