Public water system · IA4721054

Active

Holstein, City of

At a glance

City of Holstein (PWSID IA4721054) is an active community water system in Ida County, Iowa. It reports serving 1,501 people through 725 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; 7 are health-based, and the most recent began in January 1996.

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

Population served

1,501

Service connections

725

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDIA4721054

System typeCommunity water system

Activity statusActive

Population served1,501

Service connections725

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyIA state drinking water program

City servedHolstein

StateIowa

ZIP—

CountyIda County

How does City of Holstein compare with other water systems in Ida County?

By EPA's size categories, City of Holstein is a small system (501 to 3,300 people). Ida County has 7 active public water systems, and City of Holstein is the 2nd-largest of them by population served. Its population served is about twice the county average of 758 people per system, and accounts for 28% of the 5,309 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Holstein 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. Iowa has 1,084 active community water systems, 59% 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 City of Holstein?

EPA lists City of Holstein 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. 7 of the 7 active systems in Ida County (100%) are also owned by a local government.

Does City of Holstein have drinking water violations?

EPA's records list 11 violations for this system; 7 are health-based, and the most recent began in January 1996. The violations listed here began between July 1987 and January 1996. By type: 7 contaminant level above the legal limit and 4 monitoring and reporting. The contaminant or rule involved most often is Nitrate (11 of them). EPA lists 9 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
1996-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
1995-12-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
1995-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
1995-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
1994-12-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
1994-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
1993-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01	Nitratecode 1040	Yes	Resolved
1991-04-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
1991-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
1988-10-01	Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04	Nitratecode 1040	No	Archived
1987-07-01	Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04	Nitratecode 1040	No	Archived

All 11 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.

City of Holstein: frequently asked questions

Who runs City of Holstein?

City of Holstein (PWSID IA4721054) is a community water system owned by a local government. It is regulated by the IA state drinking water program.

How many people does City of Holstein serve?

City of Holstein reports serving 1,501 people through 725 service connections in Ida County, Iowa.

Where does City of Holstein 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 City of Holstein have any drinking water violations?

EPA's records list 11 violations for this system; 7 are health-based, and the most recent began in January 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 City of Holstein'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 11 violations for this system; 7 are health-based, and the most recent began in January 1996. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.

Where can I find City of Holstein's water quality report?

As a community water system, City of Holstein 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 Ida County

Water system	County	Population served	Type	Source
Ida Grove Water Utility	Ida	2,051	Community	Groundwater
Battle Creek Water Supply	Ida	700	Community	Groundwater
Galva Water Supply	Ida	435	Community	Purchased groundwater
Crawford Creek Park	Ida	250	Transient non-community	Groundwater
Arthur Municipal Water Supply	Ida	222	Community	Purchased groundwater
Moorehead Park #1	Ida	150	Transient non-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, “Holstein, City of, PWSID IA4721054, Iowa”, https://aquacensus.com/water-systems/iowa/holstein-city-of-ia4721054 (data as of October 1, 2026).