Public water system · MO4021370
ActiveButler County Pwsd 104
At a glance
Butler County Pwsd 104 (PWSID MO4021370) is an active community water system in Butler County, Missouri. It reports serving 475 people through 189 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
475
Service connections
189
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Butler County Pwsd 104 compare with other water systems in Butler County?
By EPA's size categories, Butler County Pwsd 104 is a very small system (500 people or fewer). Butler County has 14 active public water systems, and Butler County Pwsd 104 is the 6th-largest of them by population served. Its population served is well below the county average of 2,566 people per system, and accounts for 1.3% of the 35,928 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 Butler County Pwsd 104 is well below 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 groundwater means the system buys groundwater from another public water system rather than drawing its own. 177 Missouri systems (6%) list purchased groundwater as their primary source.
Who owns and regulates Butler County Pwsd 104?
EPA lists Butler County Pwsd 104 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 Butler County (57%) are also owned by a local government.
Does Butler County Pwsd 104 have drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between August 2004 and July 2025. By type: 5 public notice, recordkeeping or other, 3 monitoring and reporting and 1 reporting. The contaminant or rule involved most often is Consumer Confidence Rule (4 of them). EPA lists 7 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2023-12-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2021-11-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2013-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2012-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2004-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 9 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.
Butler County Pwsd 104: frequently asked questions
Who runs Butler County Pwsd 104?
Butler County Pwsd 104 (PWSID MO4021370) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Butler County Pwsd 104 serve?
Butler County Pwsd 104 reports serving 475 people through 189 service connections in Butler County, Missouri.
Where does Butler County Pwsd 104 get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Butler County Pwsd 104 have any drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in July 2025. 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 Butler County Pwsd 104'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 9 violations for this system; none is health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Butler County Pwsd 104's water quality report?
As a community water system, Butler County Pwsd 104 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 Butler County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Poplar Bluff Pws | Butler | 17,043 | Community | Surface water |
| Butler County Pwsd 1 | Butler | 12,000 | Community | Groundwater |
| Butler County Pwsd 3 | Butler | 2,600 | Community | Groundwater |
| Butler County Pwsd 2 | Butler | 1,625 | Community | Groundwater |
| Neelyville Pws | Butler | 485 | Community | Purchased groundwater |
| Qulin Pws | Butler | 375 | 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, “Butler County Pwsd 104, PWSID MO4021370, Missouri”, https://aquacensus.com/water-systems/missouri/butler-county-pwsd-104-mo4021370 (data as of October 1, 2026).