Public water system · MO1021318
ActiveCaldwell County Pwsd 3
At a glance
Caldwell County Pwsd 3 (PWSID MO1021318) is an active community water system in Caldwell County, Missouri. It reports serving 1,452 people through 527 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,452
Service connections
527
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Caldwell County Pwsd 3 compare with other water systems in Caldwell County?
By EPA's size categories, Caldwell County Pwsd 3 is a small system (501 to 3,300 people). Caldwell County has 8 active public water systems, and Caldwell County Pwsd 3 is the 2nd-largest of them by population served. Its population served is about 82% above the county average of 796 people per system, and accounts for 23% of the 6,371 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 Caldwell County Pwsd 3 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 179 Missouri systems (6.1%) list purchased surface water as their primary source.
Who owns and regulates Caldwell County Pwsd 3?
EPA lists Caldwell County Pwsd 3 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 Caldwell County (100%) are also owned by a local government.
Does Caldwell County Pwsd 3 have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2024. By type: 1 monitoring and reporting. The contaminant or rule involved is Lead and Copper Rule. EPA lists 1 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
The one violation in EPA's records.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.
Caldwell County Pwsd 3: frequently asked questions
Who runs Caldwell County Pwsd 3?
Caldwell County Pwsd 3 (PWSID MO1021318) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Caldwell County Pwsd 3 serve?
Caldwell County Pwsd 3 reports serving 1,452 people through 527 service connections in Caldwell County, Missouri.
Where does Caldwell County Pwsd 3 get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Caldwell County Pwsd 3 have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2024. 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 Caldwell County Pwsd 3'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 one violation for this system; it is not health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Caldwell County Pwsd 3's water quality report?
As a community water system, Caldwell County Pwsd 3 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 Caldwell County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hamilton Pws | Caldwell | 1,813 | Community | Surface water |
| Braymer Pws | Caldwell | 878 | Community | Groundwater |
| Caldwell County Pwsd 2 | Caldwell | 695 | Community | Purchased surface water |
| Polo Pws | Caldwell | 575 | Community | Purchased groundwater |
| Caldwell County Pwsd 1 | Caldwell | 335 | Community | Groundwater |
| Breckenridge Pws | Caldwell | 333 | Community | Purchased 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, “Caldwell County Pwsd 3, PWSID MO1021318, Missouri”, https://aquacensus.com/water-systems/missouri/caldwell-county-pwsd-3-mo1021318 (data as of October 1, 2026).