Public water system · IA9774033
ActiveSergeant Bluff Water Supply
At a glance
Sergeant Bluff Water Supply (PWSID IA9774033) is an active community water system in Woodbury County, Iowa. It reports serving 5,015 people through 1,899 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in November 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,015
Service connections
1,899
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Sergeant Bluff Water Supply compare with other water systems in Woodbury County?
By EPA's size categories, Sergeant Bluff Water Supply is a medium system (3,301 to 10,000 people). Woodbury County has 32 active public water systems, and Sergeant Bluff Water Supply is the 2nd-largest of them by population served. Its population served is about 61% above the county average of 3,110 people per system, and accounts for 5% of the 99,514 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 Sergeant Bluff Water Supply is about 25% 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 Sergeant Bluff Water Supply?
EPA lists Sergeant Bluff 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. 20 of the 32 active systems in Woodbury County (63%) are also owned by a local government.
Does Sergeant Bluff Water Supply have drinking water violations?
EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in November 2018. The violations listed here began between November 1978 and November 2018. By type: 3 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Combined Radium (-226 and -228) (3 of them). EPA lists 3 as archived and 1 as resolved. 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. 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 |
|---|---|---|---|---|
| 2018-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1983-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
| 1980-04-23 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
| 1978-11-06 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
All 4 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.
Sergeant Bluff Water Supply: frequently asked questions
Who runs Sergeant Bluff Water Supply?
Sergeant Bluff Water Supply (PWSID IA9774033) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Sergeant Bluff Water Supply serve?
Sergeant Bluff Water Supply reports serving 5,015 people through 1,899 service connections in Woodbury County, Iowa.
Where does Sergeant Bluff 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 Sergeant Bluff Water Supply have any drinking water violations?
EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in November 2018. 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 Sergeant Bluff 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 4 violations for this system; 3 are health-based, and the most recent began in November 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Sergeant Bluff Water Supply's water quality report?
As a community water system, Sergeant Bluff 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 Woodbury County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sioux City Water Supply | Woodbury | 85,791 | Community | Groundwater under influence of surface water |
| Moville Water Supply | Woodbury | 1,687 | Community | Groundwater |
| Sloan Water Supply | Woodbury | 1,042 | Community | Groundwater |
| Lawton Water Supply | Woodbury | 988 | Community | Groundwater |
| Correctionville Water Supply | Woodbury | 766 | Community | Groundwater |
| Anthon Municipal Water System | Woodbury | 545 | 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, “Sergeant Bluff Water Supply, PWSID IA9774033, Iowa”, https://aquacensus.com/water-systems/iowa/sergeant-bluff-water-supply-ia9774033 (data as of October 1, 2026).