Public water system · IA7165025
ActiveSanborn Water Supply
At a glance
Sanborn Water Supply (PWSID IA7165025) is an active community water system in O'Brien County, Iowa. It reports serving 1,392 people through 699 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,392
Service connections
699
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Sanborn Water Supply compare with other water systems in O'Brien County?
By EPA's size categories, Sanborn Water Supply is a small system (501 to 3,300 people). O'Brien County has 7 active public water systems, and Sanborn Water Supply is the 3rd-largest of them by population served. Its population served is about 13% below the county average of 1,597 people per system, and accounts for 12% of the 11,182 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 Sanborn 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 Sanborn Water Supply?
EPA lists Sanborn 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. 7 of the 7 active systems in O'Brien County (100%) are also owned by a local government.
Does Sanborn Water Supply have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2013. The violations listed here began between January 2013 and January 2013. By type: 12 monitoring and reporting. The contaminants or rules involved are trans-1,2-Dichloroethylene, Di(2-ethylhexyl) adipate, Di(2-ethylhexyl) phthalate and Pentachlorophenol. 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 |
|---|---|---|---|---|
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Picloramcode 2040 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | 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.
Sanborn Water Supply: frequently asked questions
Who runs Sanborn Water Supply?
Sanborn Water Supply (PWSID IA7165025) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Sanborn Water Supply serve?
Sanborn Water Supply reports serving 1,392 people through 699 service connections in O'Brien County, Iowa.
Where does Sanborn 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 Sanborn Water Supply have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2013. 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 Sanborn 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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Sanborn Water Supply's water quality report?
As a community water system, Sanborn 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 O'Brien County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sheldon Water Department | O'Brien | 5,512 | Community | Groundwater |
| Hartley Municipal Water Department | O'Brien | 1,605 | Community | Groundwater |
| Paullina Municipal Water Supply | O'Brien | 996 | Community | Groundwater |
| Primghar Municipal Water Supply | O'Brien | 902 | Community | Groundwater |
| Sutherland Water Supply | O'Brien | 629 | Community | Purchased groundwater |
| Calumet Water Supply | O'Brien | 146 | Community | Purchased 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, “Sanborn Water Supply, PWSID IA7165025, Iowa”, https://aquacensus.com/water-systems/iowa/sanborn-water-supply-ia7165025 (data as of October 1, 2026).