Public water system · MO2010745
ActiveSlater Pws
At a glance
Slater Pws (PWSID MO2010745) is an active community water system in Saline County, Missouri. It reports serving 1,835 people through 830 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; 4 are health-based, and the most recent began in September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,835
Service connections
830
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Slater Pws compare with other water systems in Saline County?
By EPA's size categories, Slater Pws is a small system (501 to 3,300 people). Saline County has 11 active public water systems, and Slater Pws is the 3rd-largest of them by population served. Its population served is roughly in line with the county average of 1,936 people per system, and accounts for 8.6% of the 21,299 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 Slater Pws 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. 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 Slater Pws?
EPA lists Slater Pws 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. 11 of the 11 active systems in Saline County (100%) are also owned by a local government.
Does Slater Pws have drinking water violations?
EPA's records list 11 violations for this system; 4 are health-based, and the most recent began in September 2025. The violations listed here began between July 1994 and September 2025. By type: 5 monitoring and reporting, 4 contaminant level above the legal limit and 2 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2025-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2025-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2017-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2012-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2010-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 11 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.
Slater Pws: frequently asked questions
Who runs Slater Pws?
Slater Pws (PWSID MO2010745) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Slater Pws serve?
Slater Pws reports serving 1,835 people through 830 service connections in Saline County, Missouri.
Where does Slater Pws 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 Slater Pws have any drinking water violations?
EPA's records list 11 violations for this system; 4 are health-based, and the most recent began in September 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 Slater Pws' 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 11 violations for this system; 4 are health-based, and the most recent began in September 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 Slater Pws' water quality report?
As a community water system, Slater Pws 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 Saline County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Marshall Pws | Saline | 12,934 | Community | Groundwater |
| Saline County Pwsd 3 | Saline | 3,000 | Community | Purchased groundwater |
| Sweet Springs Pws | Saline | 1,309 | Community | Purchased surface water |
| Saline County Pwsd 2 | Saline | 883 | Community | Purchased groundwater |
| Saline County Pwsd 1 | Saline | 480 | Community | Purchased groundwater |
| Arrow Rock Pws | Saline | 235 | Community | Purchased 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, “Slater Pws, PWSID MO2010745, Missouri”, https://aquacensus.com/water-systems/missouri/slater-pws-mo2010745 (data as of October 1, 2026).