Public water system · IA4003012
ActiveBlairsburg Water Supply
At a glance
Blairsburg Water Supply (PWSID IA4003012) is an active community water system in Hamilton County, Iowa. It reports serving 177 people through 99 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 1997.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
177
Service connections
99
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Blairsburg Water Supply compare with other water systems in Hamilton County?
By EPA's size categories, Blairsburg Water Supply is a very small system (500 people or fewer). Hamilton County has 13 active public water systems. Its population served is well below the county average of 1,099 people per system, and accounts for 1.2% of the 14,289 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 Blairsburg 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 Blairsburg Water Supply?
EPA lists Blairsburg 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. 8 of the 13 active systems in Hamilton County (62%) are also owned by a local government.
Does Blairsburg Water Supply have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 1997. The violations listed here began between April 1989 and April 1997. By type: 6 monitoring and reporting. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 1997-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1994-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1992-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Antimonycode 1074 | No | Resolved |
| 1991-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1989-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
All 6 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.
Blairsburg Water Supply: frequently asked questions
Who runs Blairsburg Water Supply?
Blairsburg Water Supply (PWSID IA4003012) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Blairsburg Water Supply serve?
Blairsburg Water Supply reports serving 177 people through 99 service connections in Hamilton County, Iowa.
Where does Blairsburg 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 Blairsburg Water Supply have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 1997. 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 Blairsburg 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 6 violations for this system; none is health-based, and the most recent began in April 1997. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Blairsburg Water Supply's water quality report?
As a community water system, Blairsburg 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 Hamilton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Webster City Water Supply | Hamilton | 7,825 | Community | Groundwater |
| Flying J No 572 | Hamilton | 1,892 | Non-transient non-community | Groundwater |
| Jewell Water Supply | Hamilton | 1,216 | Community | Groundwater |
| Stratford Muni Water Dept | Hamilton | 707 | Community | Groundwater |
| Williams Travel Center | Hamilton | 610 | Transient non-community | Groundwater |
| Ellsworth Public Water Supply | Hamilton | 514 | 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, “Blairsburg Water Supply, PWSID IA4003012, Iowa”, https://aquacensus.com/water-systems/iowa/blairsburg-water-supply-ia4003012 (data as of October 1, 2026).