Public water system · MO3024084
ActiveCallaway County Pwsd 1
At a glance
Callaway County Pwsd 1 (PWSID MO3024084) is an active community water system in Callaway County, Missouri. It reports serving 9,840 people through 4,629 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in November 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
9,840
Service connections
4,629
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Callaway County Pwsd 1 compare with other water systems in Callaway County?
By EPA's size categories, Callaway County Pwsd 1 is a medium system (3,301 to 10,000 people). Callaway County has 14 active public water systems, and Callaway County Pwsd 1 is the 3rd-largest of them by population served. Its population served is about 3.4 times the county average of 2,853 people per system, and accounts for 25% of the 39,944 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 Callaway County Pwsd 1 is about 47% above 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. 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 Callaway County Pwsd 1?
EPA lists Callaway County Pwsd 1 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. 8 of the 14 active systems in Callaway County (57%) are also owned by a local government.
Does Callaway County Pwsd 1 have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in November 2010. 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 |
|---|---|---|---|---|
| 2010-11-01 | 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.
Callaway County Pwsd 1: frequently asked questions
Who runs Callaway County Pwsd 1?
Callaway County Pwsd 1 (PWSID MO3024084) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Callaway County Pwsd 1 serve?
Callaway County Pwsd 1 reports serving 9,840 people through 4,629 service connections in Callaway County, Missouri.
Where does Callaway County Pwsd 1 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 Callaway County Pwsd 1 have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in November 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 Callaway County Pwsd 1'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 November 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Callaway County Pwsd 1's water quality report?
As a community water system, Callaway County Pwsd 1 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 Callaway County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Callaway 2 Water District | Callaway | 13,080 | Community | Groundwater |
| Fulton Pws | Callaway | 12,600 | Community | Groundwater |
| South Callaway County R Ii Schools | Callaway | 1,100 | Non-transient non-community | Groundwater |
| Auxvasse Pws | Callaway | 1,001 | Community | Groundwater |
| Ameren Missouri Callaway Energy Center | Callaway | 750 | Non-transient non-community | Groundwater |
| New Bloomfield Pws | Callaway | 669 | 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, “Callaway County Pwsd 1, PWSID MO3024084, Missouri”, https://aquacensus.com/water-systems/missouri/callaway-county-pwsd-1-mo3024084 (data as of October 1, 2026).