Public water system · IN5283007
ActiveHillsdale Water Corporation
At a glance
Hillsdale Water Corporation (PWSID IN5283007) is an active community water system in Vermillion County, Indiana. It reports serving 735 people through 265 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
735
Service connections
265
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hillsdale Water Corporation compare with other water systems in Vermillion County?
By EPA's size categories, Hillsdale Water Corporation is a small system (501 to 3,300 people). Vermillion County has 16 active public water systems. Its population served is about 27% below the county average of 1,001 people per system, and accounts for 4.6% of the 16,010 people reported by systems filed under the county. Across Indiana, the 3,969 active systems average 1,456 people each. Nationally, the average active community water system reports serving 6,703 people, so Hillsdale Water Corporation 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. Indiana has 770 active community water systems, 19% of the state's 3,969 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,769 Indiana systems (95%) list groundwater as their primary source.
Who owns and regulates Hillsdale Water Corporation?
EPA lists Hillsdale Water Corporation as privately owned. The IN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 6 of the 16 active systems in Vermillion County (38%) are also privately owned.
Does Hillsdale Water Corporation have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. The violations listed here began between July 2013 and December 2025. By type: 7 public notice, recordkeeping or other, 2 reporting, 1 required treatment not met, 1 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (5 of them). EPA lists 7 as resolved and 5 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 |
|---|---|---|---|---|
| 2025-12-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2025-01-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2021-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2021-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2017-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | 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.
Hillsdale Water Corporation: frequently asked questions
Who runs Hillsdale Water Corporation?
Hillsdale Water Corporation (PWSID IN5283007) is a community water system privately owned. It is regulated by the IN state drinking water program.
How many people does Hillsdale Water Corporation serve?
Hillsdale Water Corporation reports serving 735 people through 265 service connections in Vermillion County, Indiana.
Where does Hillsdale Water Corporation 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 Hillsdale Water Corporation have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. 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 Hillsdale Water Corporation'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, one is health-based, and the most recent began in December 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IN state drinking water program.
Where can I find Hillsdale Water Corporation's water quality report?
As a community water system, Hillsdale Water Corporation 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 Vermillion County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Clinton Water Utility | Vermillion | 4,773 | Community | Groundwater |
| Clinton Township Water Company | Vermillion | 2,300 | Community | Groundwater |
| Fairview Park Water Utilities | Vermillion | 1,386 | Community | Groundwater |
| Cayuga Water Department | Vermillion | 1,162 | Community | Groundwater |
| Spring Creek Welcome Ctr. I-74 Eastbound | Vermillion | 1,001 | Transient non-community | Groundwater |
| Beef House Restaurant | Vermillion | 850 | Non-transient non-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, “Hillsdale Water Corporation, PWSID IN5283007, Indiana”, https://aquacensus.com/water-systems/indiana/hillsdale-water-corporation-in5283007 (data as of October 1, 2026).