Public water system · IA9830001
ActiveHanlontown Water Supply System
At a glance
Hanlontown Water Supply System (PWSID IA9830001) is an active community water system in Worth County, Iowa. It reports serving 206 people through 101 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
206
Service connections
101
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hanlontown Water Supply System compare with other water systems in Worth County?
By EPA's size categories, Hanlontown Water Supply System is a very small system (500 people or fewer). Worth County has 14 active public water systems. Its population served is well below the county average of 626 people per system, and accounts for 2.4% of the 8,762 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 Hanlontown Water Supply System 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 Hanlontown Water Supply System?
EPA lists Hanlontown Water Supply System 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. 9 of the 14 active systems in Worth County (64%) are also owned by a local government.
Does Hanlontown Water Supply System have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2024. The violations listed here began between December 1994 and October 2024. By type: 7 monitoring and reporting, 3 public notice, recordkeeping or other and 2 monitoring. The contaminant or rule involved most often is Consumer Confidence Rule (3 of them). EPA lists 11 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2022-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-12-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2018-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2016-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2006-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 1994-12-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
The 12 most recent 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.
Hanlontown Water Supply System: frequently asked questions
Who runs Hanlontown Water Supply System?
Hanlontown Water Supply System (PWSID IA9830001) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Hanlontown Water Supply System serve?
Hanlontown Water Supply System reports serving 206 people through 101 service connections in Worth County, Iowa.
Where does Hanlontown Water Supply System 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 Hanlontown Water Supply System have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2024. 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 Hanlontown Water Supply System'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Hanlontown Water Supply System's water quality report?
As a community water system, Hanlontown Water Supply System 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 Worth County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Worth Co Interchange 214 Water Supply | Worth | 3,850 | Non-transient non-community | Groundwater |
| Northwood Waterworks | Worth | 2,072 | Community | Groundwater |
| Manly Water Supply | Worth | 1,266 | Community | Groundwater |
| Fertile Municipal Water | Worth | 306 | Community | Groundwater |
| Kensett Water Supply | Worth | 257 | Community | Groundwater |
| Grafton Water Supply | Worth | 218 | Community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Hanlontown Water Supply System, PWSID IA9830001, Iowa”, https://aquacensus.com/water-systems/iowa/hanlontown-water-supply-system-ia9830001 (data as of October 1, 2026).