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Public water system · MO2024138

Active

Clark County Cons Pwsd 1

At a glance

Clark County Cons Pwsd 1 (PWSID MO2024138) is an active community water system in Clark County, Missouri. It reports serving 7,140 people through 3,188 service connections. Its primary water source is 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 December 2023.

Dataset updated . Source: EPA SDWIS/ECHO public records.

Population served

7,140

Service connections

3,188

Primary source

GW

Groundwater

System type

CWS

Community water system

System record

PWSIDMO2024138
System typeCommunity water system
Activity statusActive
Population served7,140
Service connections3,188
Primary water sourceGroundwater
Owner typeLocal government
Primacy agencyMO state drinking water program
City servedWilliamstown
StateMissouri
ZIP—
CountyClark County

How does Clark County Cons Pwsd 1 compare with other water systems in Clark County?

By EPA's size categories, Clark County Cons Pwsd 1 is a medium system (3,301 to 10,000 people). Clark County has 4 active public water systems, and Clark County Cons Pwsd 1 is the largest of them by population served. Its population served is about 194% above the county average of 2,433 people per system, and accounts for 73% of the 9,730 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 Clark County Cons Pwsd 1 is roughly in line with 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 Clark County Cons Pwsd 1?

EPA lists Clark County Cons Pwsd 1 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. 4 of the 4 active systems in Clark County (100%) are also owned by a local government.

Does Clark County Cons Pwsd 1 have drinking water violations?

EPA's records list 8 violations for this system; none is health-based, and the most recent began in December 2023. The violations listed here began between November 1994 and December 2023. By type: 6 monitoring and reporting, 1 monitoring and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule, Revised Total Coliform Rule, Consumer Confidence Rule and Stage 2 Disinfectants and Disinfection Byproducts Rule. EPA lists 6 as resolved and 2 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.

BeganViolationContaminant or ruleHealth-basedStatus
2023-12-30Monitoring and reportingLead Consumer Notice · code 66Lead and Copper Rulecode 5000NoResolved
2022-10-01MonitoringMonitoring, Routine (RTCR) · code 3ARevised Total Coliform Rulecode 8000NoResolved
2019-07-01Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72Consumer Confidence Rulecode 7000NoResolved
2008-04-01Monitoring and reportingMonitoring, Routine (IDSE) · code 30Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600NoResolved
2008-01-01Monitoring and reportingMonitoring and Reporting (DBP) · code 27Total trihalomethanes (TTHM)code 2950NoArchived
2008-01-01Monitoring and reportingMonitoring and Reporting (DBP) · code 27Haloacetic acids (HAA5)code 2456NoArchived
2003-05-01Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24Total coliform bacteria (TCR)code 3100NoResolved
1994-11-01Monitoring and reportingMonitoring, Regular · code 03Gross alpha (excluding radon and uranium)code 4000NoResolved

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.

Clark County Cons Pwsd 1: frequently asked questions

Who runs Clark County Cons Pwsd 1?

Clark County Cons Pwsd 1 (PWSID MO2024138) is a community water system owned by a local government. It is regulated by the MO state drinking water program.

How many people does Clark County Cons Pwsd 1 serve?

Clark County Cons Pwsd 1 reports serving 7,140 people through 3,188 service connections in Clark County, Missouri.

Where does Clark County Cons Pwsd 1 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 Clark County Cons Pwsd 1 have any drinking water violations?

EPA's records list 8 violations for this system; none is health-based, and the most recent began in December 2023. 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 Clark County Cons Pwsd 1'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 December 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.

Where can I find Clark County Cons Pwsd 1's water quality report?

As a community water system, Clark County Cons Pwsd 1 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 Clark County

Water systemCountyPopulation servedTypeSource
Kahoka Public Works PwsClark1,961CommunityGroundwater
Wayland PwsClark420CommunityPurchased groundwater
Wyaconda PwsClark209CommunityPurchased 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, “Clark County Cons Pwsd 1, PWSID MO2024138, Missouri”, https://aquacensus.com/water-systems/missouri/clark-county-cons-pwsd-1-mo2024138 (data as of October 1, 2026).