Public water system · IA4634028
ActiveHardy Water Supply
At a glance
Hardy Water Supply (PWSID IA4634028) is an active transient non-community water system in Humboldt County, Iowa. It reports serving 26 people through 12 service connections. Its primary water source is 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 April 1998.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
26
Service connections
12
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Hardy Water Supply compare with other water systems in Humboldt County?
By EPA's size categories, Hardy Water Supply is a very small system (500 people or fewer). Humboldt County has 13 active public water systems. Its population served is well below the county average of 550 people per system, and accounts for 0.4% of the 7,145 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 Hardy Water Supply is well 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 Hardy Water Supply?
EPA lists Hardy 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. 11 of the 13 active systems in Humboldt County (85%) are also owned by a local government.
Does Hardy 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 April 1998. The violations listed here began between June 1979 and April 1998. By type: 5 monitoring and reporting and 5 contaminant level above the legal limit. The contaminant or rule involved most often is Combined Radium (-226 and -228) (5 of them). EPA lists 5 as resolved and 5 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 |
|---|---|---|---|---|
| 1998-04-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1997-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1985-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
| 1983-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
| 1982-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 1980-09-02 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
| 1979-06-12 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
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.
Hardy Water Supply: frequently asked questions
Who runs Hardy Water Supply?
Hardy Water Supply (PWSID IA4634028) is a transient non-community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Hardy Water Supply serve?
Hardy Water Supply reports serving 26 people through 12 service connections in Humboldt County, Iowa.
Where does Hardy 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 Hardy 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 April 1998. 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 Hardy 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 April 1998. For current results, consult EPA ECHO, or the IA state drinking water program.
Where can I find Hardy Water Supply's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Hardy Water Supply 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 Humboldt County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Humboldt Municipal Water Dept | Humboldt | 4,792 | Community | Groundwater under influence of surface water |
| Dakota City Water Supply | Humboldt | 769 | Community | Groundwater |
| Livermore Water Supply | Humboldt | 383 | Community | Groundwater |
| Bode Municipal Water Supply | Humboldt | 304 | Community | Groundwater |
| Renwick Munic Water Supply | Humboldt | 234 | Community | Groundwater |
| Thor Water Works | Humboldt | 181 | 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, “Hardy Water Supply, PWSID IA4634028, Iowa”, https://aquacensus.com/water-systems/iowa/hardy-water-supply-ia4634028 (data as of October 1, 2026).