Public water system · MO2010497
ActiveMarceline Pws
At a glance
Marceline Pws (PWSID MO2010497) is an active community water system in Linn County, Missouri. It reports serving 2,200 people through 1,115 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,200
Service connections
1,115
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Marceline Pws compare with other water systems in Linn County?
By EPA's size categories, Marceline Pws is a small system (501 to 3,300 people). Linn County has 9 active public water systems, and Marceline Pws is the 3rd-largest of them by population served. Its population served is about 35% above the county average of 1,627 people per system, and accounts for 15% of the 14,642 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 Marceline 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 60 Missouri systems (2%) list surface water as their primary source.
Who owns and regulates Marceline Pws?
EPA lists Marceline 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. 9 of the 9 active systems in Linn County (100%) are also owned by a local government.
Does Marceline Pws have drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in July 2025. The violations listed here began between October 2001 and July 2025. By type: 8 contaminant level above the legal limit, 3 required treatment not met and 1 reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (4 of them). EPA lists 10 as resolved, 1 as unaddressed and 1 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2009-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2009-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2009-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2009-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2008-01-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2008-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2007-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2007-10-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2001-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Archived |
The 12 most recent 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.
Marceline Pws: frequently asked questions
Who runs Marceline Pws?
Marceline Pws (PWSID MO2010497) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Marceline Pws serve?
Marceline Pws reports serving 2,200 people through 1,115 service connections in Linn County, Missouri.
Where does Marceline Pws get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Marceline Pws have any drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in July 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 Marceline 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. Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in July 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 Marceline Pws' water quality report?
As a community water system, Marceline 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 Linn County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chariton Linn County Pwsd 3 | Linn | 5,200 | Community | Purchased surface water |
| Brookfield Pws | Linn | 4,111 | Community | Surface water |
| Linn County Cons Pwsd 1 | Linn | 1,420 | Community | Groundwater |
| Meadville Pws | Linn | 415 | Community | Groundwater |
| Bucklin Pws | Linn | 408 | Community | Purchased surface water |
| Laclede Pws | Linn | 345 | 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, “Marceline Pws, PWSID MO2010497, Missouri”, https://aquacensus.com/water-systems/missouri/marceline-pws-mo2010497 (data as of October 1, 2026).