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Public water system · IA1773926

Active

Linn Grove Park

At a glance

Linn Grove Park (PWSID IA1773926) is an active transient non-community water system in Cerro Gordo County, Iowa. It reports serving 27 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 1996.

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

Population served

27

Service connections

1

Primary source

GW

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDIA1773926
System typeTransient non-community water system
Activity statusActive
Population served27
Service connections1
Primary water sourceGroundwater
Owner typeLocal government
Primacy agencyIA state drinking water program
City servedMason City
StateIowa
ZIP—
CountyCerro Gordo County

How does Linn Grove Park compare with other water systems in Cerro Gordo County?

By EPA's size categories, Linn Grove Park is a very small system (500 people or fewer). Cerro Gordo County has 34 active public water systems. Its population served is well below the county average of 1,173 people per system, and accounts for less than 0.1% of the 39,879 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Linn Grove Park is well 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. Iowa has 626 active transient non-community water systems, 34% of the state's 1,828 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,502 Iowa systems (82%) list groundwater as their primary source.

Who owns and regulates Linn Grove Park?

EPA lists Linn Grove Park as owned by a local government. The IA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 11 of the 34 active systems in Cerro Gordo County (32%) are also owned by a local government.

Does Linn Grove Park have drinking water violations?

EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 1996. The violations listed here began between July 1985 and July 1996. By type: 4 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 5 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.

BeganViolationContaminant or ruleHealth-basedStatus
1996-07-01Monitoring and reportingMonitoring, Routine Major (TCR) · code 23Total coliform bacteria (TCR)code 3100NoResolved
1996-04-01Monitoring and reportingMonitoring, Routine Major (TCR) · code 23Total coliform bacteria (TCR)code 3100NoResolved
1995-07-01Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22Total coliform bacteria (TCR)code 3100YesResolved
1994-04-01Monitoring and reportingMonitoring, Regular · code 03Nitratecode 1040NoResolved
1985-07-01Monitoring and reportingMonitoring, Regular · code 03Nitratecode 1040NoResolved

All 5 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.

Linn Grove Park: frequently asked questions

Who runs Linn Grove Park?

Linn Grove Park (PWSID IA1773926) is a transient non-community water system owned by a local government. It is regulated by the IA state drinking water program.

How many people does Linn Grove Park serve?

Linn Grove Park reports serving 27 people through 1 service connection in Cerro Gordo County, Iowa.

Where does Linn Grove Park 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 Linn Grove Park have any drinking water violations?

EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 1996. 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 Linn Grove Park'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 5 violations for this system; 1 is health-based, and the most recent began in July 1996. For current results, consult EPA ECHO, or the IA state drinking water program.

Where can I find Linn Grove Park's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Linn Grove Park 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 Cerro Gordo County

Water systemCountyPopulation servedTypeSource
Mason City Water DepartmentCerro Gordo27,338CommunityGroundwater
Clear Lake Water DepartmentCerro Gordo7,687CommunityGroundwater
Rockwell Water SupplyCerro Gordo1,071CommunityGroundwater
Ventura Water WorksCerro Gordo716CommunityGroundwater
Thornton Water SupplyCerro Gordo400CommunityGroundwater
Plymouth Water SupplyCerro Gordo378CommunityGroundwater

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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, “Linn Grove Park, PWSID IA1773926, Iowa”, https://aquacensus.com/water-systems/iowa/linn-grove-park-ia1773926 (data as of October 1, 2026).