WILLIAMSTOWN, MO · Clark County
CLARK COUNTY CONS PWSD 1 Water System
Consumer Confidence Report status
CLARK COUNTY CONS PWSD 1 must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for CLARK COUNTY CONS PWSD 1.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Missouri’s official records. Always confirm current status with Missouri before making decisions based on this information.
System facts
- System ID (PWSID)
- MO2024138
- System type
- Community Water System
- Population served
- 7,140
- Service connections
- 3,188
- Ownership
- local government
- Water source
- groundwater (wells)
CLARK COUNTY CONS PWSD 1 is one of 140 community water systems in Missouri in the 3,301 to 10,000 people size category, serving 7,140 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries between 2019 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.
Of the 2, 1 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Lead and Copper Rule and the Consumer Confidence Rule.
Violation history
Lead Consumer Notice
—Lead and Copper Rule
December 30, 2023 – April 4, 2024
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
July 1, 2019 – November 25, 2019
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| December 30, 2023 – April 4, 2024 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| July 1, 2019 – November 25, 2019 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is CLARK COUNTY CONS PWSD 1 required to publish a Consumer Confidence Report?
- Yes. CLARK COUNTY CONS PWSD 1 is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CLARK COUNTY CONS PWSD 1’s next Consumer Confidence Report due?
- CLARK COUNTY CONS PWSD 1’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CLARK COUNTY CONS PWSD 1 have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CLARK COUNTY CONS PWSD 1.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
LEMMON, LEE
573-853-4550
WILLIAMSTOWN, MO 63473-0000