Public water system · IA8156028
ActiveSchaller Water Supply
At a glance
Schaller Water Supply (PWSID IA8156028) is an active community water system in Sac County, Iowa. It reports serving 729 people through 376 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; all are health-based, and the most recent began in February 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
729
Service connections
376
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Schaller Water Supply compare with other water systems in Sac County?
By EPA's size categories, Schaller Water Supply is a small system (501 to 3,300 people). Sac County has 9 active public water systems, and Schaller Water Supply is the 6th-largest of them by population served. Its population served is about 23% below the county average of 944 people per system, and accounts for 8.6% of the 8,496 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 Schaller Water Supply 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 Schaller Water Supply?
EPA lists Schaller Water Supply 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. 8 of the 9 active systems in Sac County (89%) are also owned by a local government.
Does Schaller Water Supply have drinking water violations?
EPA's records list 8 violations for this system; all are health-based, and the most recent began in February 2023. The violations listed here began between March 2001 and February 2023. By type: 7 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Nitrite (7 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2023-02-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2013-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitritecode 1041 | Yes | Resolved |
| 2010-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitritecode 1041 | Yes | Resolved |
| 2010-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitritecode 1041 | Yes | Resolved |
| 2008-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitritecode 1041 | Yes | Resolved |
| 2008-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitritecode 1041 | Yes | Resolved |
| 2004-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitritecode 1041 | Yes | Resolved |
| 2001-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitritecode 1041 | Yes | Resolved |
All 8 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.
Schaller Water Supply: frequently asked questions
Who runs Schaller Water Supply?
Schaller Water Supply (PWSID IA8156028) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Schaller Water Supply serve?
Schaller Water Supply reports serving 729 people through 376 service connections in Sac County, Iowa.
Where does Schaller Water Supply 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 Schaller Water Supply have any drinking water violations?
EPA's records list 8 violations for this system; all are health-based, and the most recent began in February 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 Schaller Water Supply'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 8 violations for this system; all are health-based, and the most recent began in February 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Schaller Water Supply's water quality report?
As a community water system, Schaller Water Supply 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 Sac County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sac City Municipal Water Plant | Sac | 2,093 | Community | Groundwater |
| West Central Rwa-Boyer System | Sac | 1,715 | Community | Groundwater |
| Lake View Water Supply | Sac | 1,133 | Community | Groundwater |
| Odebolt Water Supply | Sac | 994 | Community | Groundwater |
| Wall Lake Water Supply | Sac | 780 | Community | Groundwater |
| Early Municipal Water Supply | Sac | 587 | 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, “Schaller Water Supply, PWSID IA8156028, Iowa”, https://aquacensus.com/water-systems/iowa/schaller-water-supply-ia8156028 (data as of October 1, 2026).