Public water system · IA9630902
ActiveDecorah Fish Hatchery
At a glance
Decorah Fish Hatchery (PWSID IA9630902) is an active transient non-community water system in Winneshiek County, Iowa. It reports serving 50 people through 4 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 5 violations for this system; none is health-based, and the most recent began in September 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
4
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Decorah Fish Hatchery compare with other water systems in Winneshiek County?
By EPA's size categories, Decorah Fish Hatchery is a very small system (500 people or fewer). Winneshiek County has 43 active public water systems. Its population served is well below the county average of 343 people per system, and accounts for 0.3% of the 14,733 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Decorah Fish Hatchery is about 65% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Iowa has 626 active transient non-community water systems, 34% 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 Decorah Fish Hatchery?
EPA lists Decorah Fish Hatchery as owned by a state 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. 1 of the 43 active systems in Winneshiek County (2.3%) are also owned by a state government.
Does Decorah Fish Hatchery have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in September 2021. The violations listed here began between May 2012 and September 2021. By type: 3 monitoring, 1 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2021-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2012-09-29 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2012-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 5 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.
Decorah Fish Hatchery: frequently asked questions
Who runs Decorah Fish Hatchery?
Decorah Fish Hatchery (PWSID IA9630902) is a transient non-community water system owned by a state government. It is regulated by the IA state drinking water program.
How many people does Decorah Fish Hatchery serve?
Decorah Fish Hatchery reports serving 50 people through 4 service connections in Winneshiek County, Iowa.
Where does Decorah Fish Hatchery 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 Decorah Fish Hatchery have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in September 2021. 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 Decorah Fish Hatchery'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 5 violations for this system; none is health-based, and the most recent began in September 2021. For current results, consult EPA ECHO, or the IA state drinking water program.
Where can I find Decorah Fish Hatchery's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Decorah Fish Hatchery is a 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 Winneshiek County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Decorah Water Department | Winneshiek | 7,615 | Community | Groundwater |
| Calmar Water Supply | Winneshiek | 1,125 | Community | Groundwater |
| Ossian Water Supply | Winneshiek | 802 | Community | Groundwater |
| Freeport Water District | Winneshiek | 775 | Community | Groundwater |
| The Country Express | Winneshiek | 515 | Transient non-community | Groundwater |
| Turkey Valley Community School | Winneshiek | 490 | Non-transient non-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, “Decorah Fish Hatchery, PWSID IA9630902, Iowa”, https://aquacensus.com/water-systems/iowa/decorah-fish-hatchery-ia9630902 (data as of October 1, 2026).