Public water system · MO4100065

Active

Usfs Greer Crossing

At a glance

Usfs Greer Crossing (PWSID MO4100065) is an active transient non-community water system in Oregon County, Missouri. It reports serving 50 people through 4 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2023.

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

Population served

Service connections

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDMO4100065

System typeTransient non-community water system

Activity statusActive

Population served50

Service connections4

Primary water sourceGroundwater

Owner typeFederal government

Primacy agencyMO state drinking water program

City servedWinona

StateMissouri

ZIP—

CountyOregon County

How does Usfs Greer Crossing compare with other water systems in Oregon County?

By EPA's size categories, Usfs Greer Crossing is a very small system (500 people or fewer). Oregon County has 7 active public water systems. Its population served is well below the county average of 678 people per system, and accounts for 1.1% of the 4,746 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Usfs Greer Crossing is about 65% below that figure.

What does “transient non-community water system” mean?

A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Missouri has 1,103 active transient non-community water systems, 37% 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 Usfs Greer Crossing?

EPA lists Usfs Greer Crossing as owned by the federal 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. 1 of the 7 active systems in Oregon County (14%) are also owned by the federal government.

Does Usfs Greer Crossing have drinking water violations?

Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2023. The violations listed here began between July 1998 and July 2023. By type: 5 monitoring and reporting, 4 contaminant level above the legal limit and 3 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (9 of them). EPA lists 12 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
2023-07-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2022-10-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2019-06-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2015-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2012-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2009-05-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2006-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2005-05-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2004-06-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2004-05-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2001-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1998-07-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved

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.

Usfs Greer Crossing: frequently asked questions

Who runs Usfs Greer Crossing?

Usfs Greer Crossing (PWSID MO4100065) is a transient non-community water system owned by the federal government. It is regulated by the MO state drinking water program.

How many people does Usfs Greer Crossing serve?

Usfs Greer Crossing reports serving 50 people through 4 service connections in Oregon County, Missouri.

Where does Usfs Greer Crossing 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 Usfs Greer Crossing have any drinking water violations?

Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2023. 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 Usfs Greer Crossing'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. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2023. For current results, consult EPA ECHO, or the MO state drinking water program.

Where can I find Usfs Greer Crossing's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Usfs Greer Crossing is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.

Other water systems in Oregon County

Water system	County	Population served	Type	Source
Thayer Pws	Oregon	2,200	Community	Groundwater
Alton Pws	Oregon	1,000	Community	Groundwater
Oregon County Pwsd 1	Oregon	900	Community	Groundwater
Couch R 1 School	Oregon	264	Non-transient non-community	Groundwater
Koshkonong Pws	Oregon	212	Community	Groundwater
Oregon County Pwsd 2	Oregon	120	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, “Usfs Greer Crossing, PWSID MO4100065, Missouri”, https://aquacensus.com/water-systems/missouri/usfs-greer-crossing-mo4100065 (data as of October 1, 2026).