Public water system · MO1010851

Active

Weston Pws

At a glance

Weston Pws (PWSID MO1010851) is an active community water system in Platte County, Missouri. It reports serving 1,850 people through 854 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in May 2025.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

1,850

Service connections

854

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDMO1010851

System typeCommunity water system

Activity statusActive

Population served1,850

Service connections854

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyMO state drinking water program

City servedWeston

StateMissouri

ZIP—

CountyPlatte County

How does Weston Pws compare with other water systems in Platte County?

By EPA's size categories, Weston Pws is a small system (501 to 3,300 people). Platte County has 20 active public water systems. Its population served is about 32% below the county average of 2,712 people per system, and accounts for 3.4% of the 54,230 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 Weston Pws 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. 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 Weston Pws?

EPA lists Weston Pws 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. 17 of the 20 active systems in Platte County (85%) are also owned by a local government.

Does Weston Pws have drinking water violations?

EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in May 2025. The violations listed here began between April 2016 and May 2025. By type: 3 monitoring and reporting, 3 monitoring, 1 reporting, 1 public notice, recordkeeping or other, 1 required treatment not met and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Groundwater Rule (4 of them). EPA lists 10 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
2025-05-01	Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31	Groundwater Rulecode 0700	No	Resolved
2025-01-01	Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31	Groundwater Rulecode 0700	No	Resolved
2024-10-17	ReportingLSL Reporting · code 4G	Lead and Copper Rule Revisionscode 5200	No	Resolved
2023-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2023-07-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2023-01-01	Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31	Groundwater Rulecode 0700	No	Resolved
2020-09-07	Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76	Public Noticecode 7500	No	Resolved
2020-06-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Groundwater Rulecode 0700	Yes	Resolved
2019-06-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2016-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved

All 10 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.

Weston Pws: frequently asked questions

Who runs Weston Pws?

Weston Pws (PWSID MO1010851) is a community water system owned by a local government. It is regulated by the MO state drinking water program.

How many people does Weston Pws serve?

Weston Pws reports serving 1,850 people through 854 service connections in Platte County, Missouri.

Where does Weston Pws 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 Weston Pws have any drinking water violations?

EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in May 2025. 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 Weston Pws' 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 10 violations for this system; 2 are health-based, and the most recent began in May 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.

Where can I find Weston Pws' water quality report?

As a community water system, Weston Pws 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 Platte County

Water system	County	Population served	Type	Source
Mo American Platte County	Platte	16,645	Community	Groundwater
Platte Co Pwsd 4	Platte	9,552	Community	Purchased surface water
Platte County Cons Pwsd 1	Platte	7,074	Community	Purchased surface water
Platte City Pws	Platte	4,691	Community	Purchased surface water
Platte County Pwsd 6	Platte	2,095	Community	Purchased groundwater
Weatherby Lake Pws	Platte	2,077	Community	Purchased surface water

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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, “Weston Pws, PWSID MO1010851, Missouri”, https://aquacensus.com/water-systems/missouri/weston-pws-mo1010851 (data as of October 1, 2026).