Public water system · MO1021098
ActiveCass Bates County Pwsd 12
At a glance
Cass Bates County Pwsd 12 (PWSID MO1021098) is an active community water system serving Bates and Cass counties, Missouri. It reports serving 1,335 people through 575 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 8 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
1,335
Service connections
575
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Cass Bates County Pwsd 12 compare with other water systems in Missouri?
By EPA's size categories, Cass Bates County Pwsd 12 is a small system (501 to 3,300 people). 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 Cass Bates County Pwsd 12 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 Cass Bates County Pwsd 12?
EPA lists Cass Bates County Pwsd 12 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.
Does Cass Bates County Pwsd 12 have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between December 1995 and July 2025. By type: 5 monitoring and reporting and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-12-14 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2003-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-09-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 8 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.
Cass Bates County Pwsd 12: frequently asked questions
Who runs Cass Bates County Pwsd 12?
Cass Bates County Pwsd 12 (PWSID MO1021098) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Cass Bates County Pwsd 12 serve?
Cass Bates County Pwsd 12 reports serving 1,335 people through 575 service connections in Bates and Cass counties, Missouri.
Where does Cass Bates County Pwsd 12 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 Cass Bates County Pwsd 12 have any drinking water violations?
EPA's records list 8 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 Cass Bates County Pwsd 12'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 8 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 Cass Bates County Pwsd 12's water quality report?
As a community water system, Cass Bates County Pwsd 12 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 Bates County(the first county EPA lists for this system)
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Butler Pws | Bates | 4,219 | Community | Surface water |
| Bates County Pwsd 5 | Bates | 2,690 | Community | Purchased surface water |
| Bates County Pwsd 4 | Bates + 1 more | 2,348 | Community | Purchased surface water |
| Adrian Pws | Bates | 1,635 | Community | Surface water |
| Bates County Pwsd 6 | Bates | 1,613 | Community | Purchased surface water |
| Rich Hill Pws | Bates | 1,400 | Community | Surface water |
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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, “Cass Bates County Pwsd 12, PWSID MO1021098, Missouri”, https://aquacensus.com/water-systems/missouri/cass-bates-county-pwsd-12-mo1021098 (data as of October 1, 2026).