Tap Truth EPA drinking water records, in plain English

Public water system record

Clark County Cons PWSD 1

Serves an area of Clark County and Lewis County, MO that includes Williamstown, St. Francisville, Medill and 4 more places · 7,140 people served

Federal records show no health-based violations and 3 monitoring/reporting issues for Clark County Cons PWSD 1 in the last ten years.

  • MO2024138
  • WILLIAMSTOWN
  • MO
  • 7,140 served

System profile

Source water Groundwater
ZIP 63473
EPA system ID MO2024138

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • Clark County Cons PWSD 1 draws water from 3 wells.
  • Record on file since 1994, with 0 health-based violations before October 20, 2016.
  • Lead pipe inventory: 0 lead and 3,816 unknown out of 3,936 service lines.

Check whether Clark County Cons PWSD 1 serves your address

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016.

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2023 Resolved
Revised Total Coliform Rule
Monitoring violation
 Oct 1, 2022 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2019 Resolved

Full record since 1994

EPA's records for Clark County Cons PWSD 1 go back to 1994. Before October 20, 2016 they list no health-based violations and 5 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 1
2000s 0 4
October 20, 2016 to 2019 0 1
2020s 0 2

Where the water comes from

Clark County Cons PWSD 1 draws water from 3 wells. It also has emergency connections to Kahoka Public Works PWS, Canton PWS and Scotland County Cons PWSD 1. 3 other community water systems buy water from Clark County Cons PWSD 1.

Emergency or part-time connections to

Community systems that buy water from it

Annual water quality report

Clark County Cons PWSD 1 must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Missouri.

Certified drinking water labs by state EPA guidance for private wells