Public water system · MO3010614
ActiveOtterville Pws
At a glance
Otterville Pws (PWSID MO3010614) is an active community water system in Cooper County, Missouri. It reports serving 450 people through 193 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; 1 is health-based, and the most recent began in October 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
450
Service connections
193
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Otterville Pws compare with other water systems in Cooper County?
By EPA's size categories, Otterville Pws is a very small system (500 people or fewer). Cooper County has 8 active public water systems, and Otterville Pws is the 5th-largest of them by population served. Its population served is well below the county average of 1,624 people per system, and accounts for 3.5% of the 12,993 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 Otterville 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 Otterville Pws?
EPA lists Otterville 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. 8 of the 8 active systems in Cooper County (100%) are also owned by a local government.
Does Otterville Pws have drinking water violations?
EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in October 2020. The violations listed here began between September 1993 and October 2020. By type: 6 monitoring and reporting, 2 monitoring, 2 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 7 as resolved and 4 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 |
|---|---|---|---|---|
| 2020-10-02 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2020-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2019-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1998-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1998-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1996-03-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Otterville Pws: frequently asked questions
Who runs Otterville Pws?
Otterville Pws (PWSID MO3010614) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Otterville Pws serve?
Otterville Pws reports serving 450 people through 193 service connections in Cooper County, Missouri.
Where does Otterville 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 Otterville Pws have any drinking water violations?
EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in October 2020. 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 Otterville 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; 1 is health-based, and the most recent began in October 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Otterville Pws' water quality report?
As a community water system, Otterville 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 Cooper County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Boonville Pws | Cooper | 7,964 | Community | Surface water |
| Cooper County Consolidated Pwsd # 1 | Cooper | 2,451 | Community | Purchased surface water |
| Pilot Grove Pws | Cooper | 768 | Community | Groundwater |
| Cooper County Pwsd 1 | Cooper | 562 | Community | Groundwater |
| Bunceton Pws | Cooper | 337 | Community | Groundwater |
| Prairie Home Pws | Cooper | 280 | 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, “Otterville Pws, PWSID MO3010614, Missouri”, https://aquacensus.com/water-systems/missouri/otterville-pws-mo3010614 (data as of October 1, 2026).