Public water system · MO6024292
ActiveJefferson County Pwsd 1
At a glance
Jefferson County Pwsd 1 (PWSID MO6024292) is an active community water system in Jefferson County, Missouri. It reports serving 21,113 people through 7,554 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
21,113
Service connections
7,554
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Jefferson County Pwsd 1 compare with other water systems in Jefferson County?
By EPA's size categories, Jefferson County Pwsd 1 is a large system (10,001 to 100,000 people). Jefferson County has 92 active public water systems, and Jefferson County Pwsd 1 is the 2nd-largest of them by population served. Its population served is about 10 times the county average of 2,034 people per system, and accounts for 11% of the 187,106 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 Jefferson County Pwsd 1 is about 3.1 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 179 Missouri systems (6.1%) list purchased surface water as their primary source.
Who owns and regulates Jefferson County Pwsd 1?
EPA lists Jefferson 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. 26 of the 92 active systems in Jefferson County (28%) are also owned by a local government.
Does Jefferson County Pwsd 1 have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Jefferson County Pwsd 1. For the latest compliance status, check EPA ECHO for current compliance history.
Jefferson County Pwsd 1: frequently asked questions
Who runs Jefferson County Pwsd 1?
Jefferson County Pwsd 1 (PWSID MO6024292) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Jefferson County Pwsd 1 serve?
Jefferson County Pwsd 1 reports serving 21,113 people through 7,554 service connections in Jefferson County, Missouri.
Where does Jefferson County Pwsd 1 get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Jefferson County Pwsd 1 have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Jefferson 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 Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Jefferson County Pwsd 1's water quality report?
As a community water system, Jefferson 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 Jefferson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Jefferson Co Cons Pwsd C 1 | Jefferson | 37,000 | Community | Purchased surface water |
| Jefferson County Pwsd 3 | Jefferson | 17,000 | Community | Purchased surface water |
| Jefferson County Pwsd 2 | Jefferson | 16,548 | Community | Surface water |
| Festus Pws | Jefferson | 13,000 | Community | Purchased groundwater under influence |
| Jefferson County Pwsd 10 | Jefferson | 10,000 | Community | Purchased surface water |
| Jefferson County Pwsd 5 | Jefferson | 8,000 | 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, “Jefferson County Pwsd 1, PWSID MO6024292, Missouri”, https://aquacensus.com/water-systems/missouri/jefferson-county-pwsd-1-mo6024292 (data as of October 1, 2026).