Public water system · MO4021566
ActiveScott County Pwsd 4
At a glance
Scott County Pwsd 4 (PWSID MO4021566) is an active community water system in Scott County, Missouri. It reports serving 3,150 people through 1,479 service connections. 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; 1 is health-based, and the most recent began in November 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,150
Service connections
1,479
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Scott County Pwsd 4 compare with other water systems in Scott County?
By EPA's size categories, Scott County Pwsd 4 is a small system (501 to 3,300 people). Scott County has 18 active public water systems, and Scott County Pwsd 4 is the 3rd-largest of them by population served. Its population served is about 66% above the county average of 1,901 people per system, and accounts for 9.2% of the 34,210 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 Scott County Pwsd 4 is about half of 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 Scott County Pwsd 4?
EPA lists Scott County Pwsd 4 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. 14 of the 18 active systems in Scott County (78%) are also owned by a local government.
Does Scott County Pwsd 4 have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in November 2025. The violations listed here began between July 2015 and November 2025. By type: 1 monitoring, 1 reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are Revised Total Coliform Rule, Lead and Copper Rule Revisions and Total coliform bacteria (TCR). EPA lists 3 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 |
|---|---|---|---|---|
| 2025-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2015-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
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.
Scott County Pwsd 4: frequently asked questions
Who runs Scott County Pwsd 4?
Scott County Pwsd 4 (PWSID MO4021566) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Scott County Pwsd 4 serve?
Scott County Pwsd 4 reports serving 3,150 people through 1,479 service connections in Scott County, Missouri.
Where does Scott County Pwsd 4 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 Scott County Pwsd 4 have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in November 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 Scott County Pwsd 4'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; 1 is health-based, and the most recent began in November 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 Scott County Pwsd 4's water quality report?
As a community water system, Scott County Pwsd 4 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 Scott County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sikeston Pws | Scott | 16,291 | Community | Groundwater |
| Scott City Pws | Scott | 4,653 | Community | Groundwater |
| Chaffee Pws | Scott | 3,054 | Community | Groundwater |
| Oran Pws | Scott | 1,294 | Community | Groundwater |
| Miner Pws | Scott | 1,135 | Community | Groundwater |
| Benton Pws | Scott | 885 | 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, “Scott County Pwsd 4, PWSID MO4021566, Missouri”, https://aquacensus.com/water-systems/missouri/scott-county-pwsd-4-mo4021566 (data as of October 1, 2026).