Public water system · MO6010547

Active

Moscow Mills Pws

At a glance

Moscow Mills Pws (PWSID MO6010547) is an active community water system in Lincoln County, Missouri. It reports serving 4,500 people through 1,674 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 January 2025.

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

Population served

4,500

Service connections

1,674

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDMO6010547

System typeCommunity water system

Activity statusActive

Population served4,500

Service connections1,674

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyMO state drinking water program

City servedMoscow Mills

StateMissouri

ZIP—

CountyLincoln County

How does Moscow Mills Pws compare with other water systems in Lincoln County?

By EPA's size categories, Moscow Mills Pws is a medium system (3,301 to 10,000 people). Lincoln County has 45 active public water systems, and Moscow Mills Pws is the 3rd-largest of them by population served. Its population served is about 4.5 times the county average of 1,000 people per system, and accounts for 10% of the 45,010 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 Moscow Mills Pws is about 33% 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 Moscow Mills Pws?

EPA lists Moscow Mills 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. 8 of the 45 active systems in Lincoln County (18%) are also owned by a local government.

Does Moscow Mills Pws have drinking water violations?

EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in January 2025. The violations listed here began between April 2008 and January 2025. By type: 6 monitoring and reporting, 1 public notice, recordkeeping or other, 1 required treatment not met, 1 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Groundwater Rule (2 of them). EPA lists 8 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.

Began	Violation	Contaminant or rule	Health-based	Status
2025-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Archived
2025-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Archived
2023-12-14	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2023-02-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Groundwater Rulecode 0700	Yes	Resolved
2022-11-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2020-07-01	Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31	Groundwater Rulecode 0700	No	Resolved
2019-01-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2013-11-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2009-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2008-04-01	Monitoring and reportingMonitoring, Routine (IDSE) · code 30	Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600	No	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.

Moscow Mills Pws: frequently asked questions

Who runs Moscow Mills Pws?

Moscow Mills Pws (PWSID MO6010547) is a community water system owned by a local government. It is regulated by the MO state drinking water program.

How many people does Moscow Mills Pws serve?

Moscow Mills Pws reports serving 4,500 people through 1,674 service connections in Lincoln County, Missouri.

Where does Moscow Mills 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 Moscow Mills 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 January 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 Moscow Mills 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 January 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 Moscow Mills Pws' water quality report?

As a community water system, Moscow Mills 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 Lincoln County

Water system	County	Population served	Type	Source
Troy Pws	Lincoln	15,000	Community	Groundwater
Lincoln County Pwsd 1	Lincoln	14,000	Community	Groundwater
Elsberry Pws	Lincoln	2,076	Community	Groundwater
Winfield Pws	Lincoln	1,489	Community	Purchased groundwater
Mo American Warren County Water & Sewer	Lincoln + 1 more	1,200	Community	Groundwater
Quail Run MHP	Lincoln	897	Community	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, “Moscow Mills Pws, PWSID MO6010547, Missouri”, https://aquacensus.com/water-systems/missouri/moscow-mills-pws-mo6010547 (data as of October 1, 2026).