Public water system · IA8444063
ActiveHull Water Supply
At a glance
Hull Water Supply (PWSID IA8444063) is an active community water system in Sioux County, Iowa. It reports serving 2,384 people through 908 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in August 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,384
Service connections
908
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Hull Water Supply compare with other water systems in Sioux County?
By EPA's size categories, Hull Water Supply is a small system (501 to 3,300 people). Sioux County has 16 active public water systems. Its population served is roughly in line with the county average of 2,416 people per system, and accounts for 6.2% of the 38,650 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 Hull Water Supply is about 64% 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 156 Iowa systems (8.5%) list purchased groundwater as their primary source.
Who owns and regulates Hull Water Supply?
EPA lists Hull 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. 13 of the 16 active systems in Sioux County (81%) are also owned by a local government.
Does Hull Water Supply have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in August 2005. The violations listed here began between November 1997 and August 2005. By type: 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2005-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1997-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 2 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.
Hull Water Supply: frequently asked questions
Who runs Hull Water Supply?
Hull Water Supply (PWSID IA8444063) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Hull Water Supply serve?
Hull Water Supply reports serving 2,384 people through 908 service connections in Sioux County, Iowa.
Where does Hull Water Supply get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Hull Water Supply have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in August 2005. 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 Hull 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 2 violations for this system; 1 is health-based, and the most recent began in August 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Hull Water Supply's water quality report?
As a community water system, Hull 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 Sioux County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sioux Center Municipal Water Department | Sioux | 8,231 | Community | Groundwater |
| Orange City Municipal Water Department | Sioux | 6,267 | Community | Groundwater |
| Southern Sioux County Rural Water | Sioux | 5,420 | Community | Groundwater |
| Rock Valley Water Supply | Sioux | 4,059 | Community | Groundwater |
| Rural Water System #1 | Sioux | 3,428 | Community | Groundwater under influence of surface water |
| Hawarden Water Supply | Sioux | 2,700 | 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, “Hull Water Supply, PWSID IA8444063, Iowa”, https://aquacensus.com/water-systems/iowa/hull-water-supply-ia8444063 (data as of October 1, 2026).