Public water system · IA4039071
ActiveRandall Water Supply
At a glance
Randall Water Supply (PWSID IA4039071) is an active community water system in Hamilton County, Iowa. It reports serving 154 people through 100 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in April 1995.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
154
Service connections
100
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Randall Water Supply compare with other water systems in Hamilton County?
By EPA's size categories, Randall 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 1.1% 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 Randall 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 Randall Water Supply?
EPA lists Randall 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 Randall Water Supply have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in April 1995. The violations listed here began between July 1979 and April 1995. By type: 2 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Barium (2 of them). EPA lists 2 as resolved and 2 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 |
|---|---|---|---|---|
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 1981-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Bariumcode 1010 | Yes | Archived |
| 1979-07-26 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Bariumcode 1010 | Yes | Archived |
All 4 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.
Randall Water Supply: frequently asked questions
Who runs Randall Water Supply?
Randall Water Supply (PWSID IA4039071) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Randall Water Supply serve?
Randall Water Supply reports serving 154 people through 100 service connections in Hamilton County, Iowa.
Where does Randall 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 Randall Water Supply have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in April 1995. 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 Randall 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 4 violations for this system; 2 are health-based, and the most recent began in April 1995. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Randall Water Supply's water quality report?
As a community water system, Randall 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, “Randall Water Supply, PWSID IA4039071, Iowa”, https://aquacensus.com/water-systems/iowa/randall-water-supply-ia4039071 (data as of October 1, 2026).