Public water system · IA7809078
ActiveCarson Water Supply
At a glance
Carson Water Supply (PWSID IA7809078) is an active community water system in Pottawattamie County, Iowa. It reports serving 766 people through 358 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 2 are health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
766
Service connections
358
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Carson Water Supply compare with other water systems in Pottawattamie County?
By EPA's size categories, Carson Water Supply is a small system (501 to 3,300 people). 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 0.9% 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 Carson 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 Carson Water Supply?
EPA lists Carson 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 Carson Water Supply have drinking water violations?
EPA's records list 7 violations for this system; 2 are health-based, and the most recent began in April 2025. The violations listed here began between September 1992 and April 2025. By type: 4 monitoring and reporting, 2 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 6 as resolved and 1 as archived. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2023-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 7 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.
Carson Water Supply: frequently asked questions
Who runs Carson Water Supply?
Carson Water Supply (PWSID IA7809078) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Carson Water Supply serve?
Carson Water Supply reports serving 766 people through 358 service connections in Pottawattamie County, Iowa.
Where does Carson 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 Carson Water Supply have any drinking water violations?
EPA's records list 7 violations for this system; 2 are health-based, and the most recent began in April 2025. 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 Carson 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 7 violations for this system; 2 are health-based, and the most recent began in April 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Carson Water Supply's water quality report?
As a community water system, Carson 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, “Carson Water Supply, PWSID IA7809078, Iowa”, https://aquacensus.com/water-systems/iowa/carson-water-supply-ia7809078 (data as of October 1, 2026).