Public water system · MO1024143
ActiveClay County Pwsd 3
At a glance
Clay County Pwsd 3 (PWSID MO1024143) is an active community water system in Clay County, Missouri. It reports serving 3,447 people through 1,360 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 4 are health-based, and the most recent began in July 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,447
Service connections
1,360
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Clay County Pwsd 3 compare with other water systems in Clay County?
By EPA's size categories, Clay County Pwsd 3 is a medium system (3,301 to 10,000 people). Clay County has 20 active public water systems. Its population served is about 45% below the county average of 6,258 people per system, and accounts for 2.8% of the 125,166 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 Clay County Pwsd 3 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 Clay County Pwsd 3?
EPA lists Clay County Pwsd 3 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. 19 of the 20 active systems in Clay County (95%) are also owned by a local government.
Does Clay County Pwsd 3 have drinking water violations?
EPA's records list 10 violations for this system; 4 are health-based, and the most recent began in July 2016. The violations listed here began between February 1993 and July 2016. By type: 5 monitoring and reporting, 4 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (4 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2016-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2016-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2016-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2013-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2005-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Archived |
| 1993-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 10 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.
Clay County Pwsd 3: frequently asked questions
Who runs Clay County Pwsd 3?
Clay County Pwsd 3 (PWSID MO1024143) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Clay County Pwsd 3 serve?
Clay County Pwsd 3 reports serving 3,447 people through 1,360 service connections in Clay County, Missouri.
Where does Clay County Pwsd 3 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 Clay County Pwsd 3 have any drinking water violations?
EPA's records list 10 violations for this system; 4 are health-based, and the most recent began in July 2016. 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 Clay County Pwsd 3'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 10 violations for this system; 4 are health-based, and the most recent began in July 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Clay County Pwsd 3's water quality report?
As a community water system, Clay County Pwsd 3 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 Clay County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Liberty Pws | Clay | 30,800 | Community | Groundwater |
| Gladstone Pws | Clay | 27,000 | Community | Groundwater |
| Kearney Pws | Clay | 11,500 | Community | Purchased surface water |
| Excelsior Springs Pws | Clay | 11,084 | Community | Groundwater |
| Smithville Pws | Clay | 10,885 | Community | Surface water |
| Ray County Cons Pwsd 2 | Clay + 2 more | 9,360 | 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, “Clay County Pwsd 3, PWSID MO1024143, Missouri”, https://aquacensus.com/water-systems/missouri/clay-county-pwsd-3-mo1024143 (data as of October 1, 2026).