Public water system · 070000014
ActiveWinnavegas Casino
At a glance
Winnavegas Casino (PWSID 070000014) is an active non-transient non-community water system in Iowa. It reports serving 1,576 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as Native American-owned. EPA's records list 11 violations for this system; 5 are health-based, and the most recent began in November 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,576
Service connections
2
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Winnavegas Casino compare with other water systems in Iowa?
By EPA's size categories, Winnavegas Casino is a small system (501 to 3,300 people). Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Winnavegas Casino is about 3.7 times that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Iowa has 118 active non-transient non-community water systems, 6.5% 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 Winnavegas Casino?
EPA lists Winnavegas Casino as Native American-owned. The EPA Region 07 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Winnavegas Casino have drinking water violations?
EPA's records list 11 violations for this system; 5 are health-based, and the most recent began in November 2024. The violations listed here began between July 1993 and November 2024. By type: 4 monitoring and reporting, 4 contaminant level above the legal limit, 1 monitoring, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2024-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-11-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-03-15 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2021-08-16 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2013-11-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-11-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 1994-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 11 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.
Winnavegas Casino: frequently asked questions
Who runs Winnavegas Casino?
Winnavegas Casino (PWSID 070000014) is a non-transient non-community water system Native American-owned. It is regulated by the EPA Region 07.
How many people does Winnavegas Casino serve?
Winnavegas Casino reports serving 1,576 people through 2 service connections in Iowa.
Where does Winnavegas Casino 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 Winnavegas Casino have any drinking water violations?
EPA's records list 11 violations for this system; 5 are health-based, and the most recent began in November 2024. 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 Winnavegas Casino'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 11 violations for this system; 5 are health-based, and the most recent began in November 2024. For current results, consult EPA ECHO, or the EPA Region 07.
Where can I find Winnavegas Casino's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Winnavegas Casino is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Iowa
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Des Moines Water Works | Polk | 246,055 | Community | Purchased surface water |
| Iowa-American Wtr Co-Davenport | Scott | 147,720 | Community | Surface water |
| Cedar Rapids Water Department | Linn | 142,364 | Community | Groundwater under influence of surface water |
| Sioux City Water Supply | Woodbury | 85,791 | Community | Groundwater under influence of surface water |
| Ankeny, City of | Polk | 76,207 | Community | Purchased surface water |
| West Des Moines Water Works | Dallas + 1 more | 73,959 | Community | Purchased surface water |
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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, “Winnavegas Casino, PWSID 070000014, Iowa”, https://aquacensus.com/water-systems/iowa/winnavegas-casino-070000014 (data as of October 1, 2026).