Public water system · IA7833025
ActiveHancock Water Supply
At a glance
Hancock Water Supply (PWSID IA7833025) is an active community water system in Pottawattamie County, Iowa. It reports serving 200 people through 114 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in September 2002.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
200
Service connections
114
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Hancock Water Supply compare with other water systems in Pottawattamie County?
By EPA's size categories, Hancock Water Supply is a very small system (500 people or fewer). Pottawattamie County has 33 active public water systems. Its population served is well below the county average of 2,579 people per system, and accounts for 0.2% of the 85,108 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 Hancock 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. 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 Hancock Water Supply?
EPA lists Hancock 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. 15 of the 33 active systems in Pottawattamie County (45%) are also owned by a local government.
Does Hancock Water Supply have drinking water violations?
EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in September 2002. The violations listed here began between July 1991 and September 2002. By type: 5 contaminant level above the legal limit and 5 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 10 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 |
|---|---|---|---|---|
| 2002-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1998-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1994-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 1991-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 10 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.
Hancock Water Supply: frequently asked questions
Who runs Hancock Water Supply?
Hancock Water Supply (PWSID IA7833025) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Hancock Water Supply serve?
Hancock Water Supply reports serving 200 people through 114 service connections in Pottawattamie County, Iowa.
Where does Hancock 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 Hancock Water Supply have any drinking water violations?
EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in September 2002. 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 Hancock 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 10 violations for this system; 5 are health-based, and the most recent began in September 2002. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Hancock Water Supply's water quality report?
As a community water system, Hancock 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 Pottawattamie County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Council Bluffs Water Works | Pottawattamie | 64,447 | Community | Surface water |
| Regional Water | Pottawattamie + 1 more | 4,132 | Community | Purchased surface water |
| Carter Lake Water District | Pottawattamie | 3,791 | Community | Purchased surface water |
| Avoca Water Works | Pottawattamie | 1,697 | Community | Purchased groundwater |
| Urban Bluffs - North | Pottawattamie | 1,558 | Community | Purchased surface water |
| Oakland Munic Water Utility | Pottawattamie | 1,524 | 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, “Hancock Water Supply, PWSID IA7833025, Iowa”, https://aquacensus.com/water-systems/iowa/hancock-water-supply-ia7833025 (data as of October 1, 2026).