Public water system · IA5428031
ActiveHarper Water Supply
At a glance
Harper Water Supply (PWSID IA5428031) is an active community water system in Keokuk County, Iowa. It reports serving 118 people through 62 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
118
Service connections
62
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Harper Water Supply compare with other water systems in Keokuk County?
By EPA's size categories, Harper Water Supply is a very small system (500 people or fewer). Keokuk County has 12 active public water systems. Its population served is well below the county average of 1,926 people per system, and accounts for 0.5% of the 23,108 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 Harper 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 119 Iowa systems (6.5%) list purchased surface water as their primary source.
Who owns and regulates Harper Water Supply?
EPA lists Harper 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. 10 of the 12 active systems in Keokuk County (83%) are also owned by a local government.
Does Harper Water Supply have drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2010. The violations listed here began between February 1992 and December 2010. By type: 3 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 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 |
|---|---|---|---|---|
| 2010-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 1998-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Harper Water Supply: frequently asked questions
Who runs Harper Water Supply?
Harper Water Supply (PWSID IA5428031) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Harper Water Supply serve?
Harper Water Supply reports serving 118 people through 62 service connections in Keokuk County, Iowa.
Where does Harper Water Supply get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Harper Water Supply have any drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2010. 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 Harper 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 5 violations for this system; 3 are health-based, and the most recent began in December 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Harper Water Supply's water quality report?
As a community water system, Harper 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 Keokuk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wapello Rural Water Assoc. | Keokuk + 3 more | 17,263 | Community | Purchased surface water |
| Sigourney Muni Water Works | Keokuk | 2,004 | Community | Groundwater |
| Keota Water Dept | Keokuk | 897 | Community | Groundwater |
| Hedrick Water Supply | Keokuk | 728 | Community | Purchased groundwater |
| What Cheer Water Supply | Keokuk | 646 | Community | Purchased groundwater |
| Richland Water Supply | Keokuk | 542 | 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, “Harper Water Supply, PWSID IA5428031, Iowa”, https://aquacensus.com/water-systems/iowa/harper-water-supply-ia5428031 (data as of October 1, 2026).