Skip to content
AquaCensus

Public water system · MO6010708

Active

St Clair Pws

Community water system in Franklin County, Missouri, drawing primarily on groundwater.

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

Population served

4,700

Service connections

1,670

Primary source

GW

Groundwater

System type

CWS

Community water system

System record

PWSIDMO6010708
System typeCommunity water system
Activity statusActive
Population served4,700
Service connections1,670
Primary water sourceGroundwater
Owner typeLocal government
Primacy agencyMO state drinking water program
City servedSt. Clair
StateMissouri
ZIP—
CountyFranklin County

Violations & enforcement

BeganViolationContaminant or ruleHealth-basedStatus
2025-07-02ReportingNotification, Known or Potential LSL · code 4HLead and Copper Rule Revisionscode 5200NoUnaddressed
2021-07-01Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72Consumer Confidence Rulecode 7000NoResolved
2015-10-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2015-08-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2015-07-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2013-05-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2012-12-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2012-11-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2011-11-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2011-10-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2011-04-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
2008-12-04Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75Public Noticecode 7500NoResolved

The 12 most recent 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.

St Clair Pws: frequently asked questions

Is St Clair Pws's water safe to drink?

St Clair Pws is an active community water system regulated under the Safe Drinking Water Act, overseen by the MO state drinking water program. EPA's SDWA data records violations for this system — the most recent are listed on this page, including health-based violations; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.

Who runs St Clair Pws?

St Clair Pws (PWSID MO6010708) is a local government-owned community water system, regulated by the MO state drinking water program.

How many people does St Clair Pws serve?

St Clair Pws reports serving 4,700 people through 1,670 service connections in Franklin County, Missouri.

Where does St Clair Pws get its water?

EPA SDWIS lists this system's primary water source as groundwater.

Other water systems in Franklin County

Water systemCountyPopulation servedTypeSource
Washington PwsFranklin14,068CommunityGroundwater
Union PwsFranklin12,348CommunityGroundwater
Franklin County Pwsd 3Franklin8,250CommunityGroundwater
Sullivan PwsFranklin + 1 more7,081CommunityGroundwater
Pacific PwsFranklin + 1 more6,000CommunityGroundwater
Franklin County Pwsd 1Franklin3,500CommunityGroundwater

Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.