Public water system · IN5217007
ActiveWaterloo Water Works
At a glance
Waterloo Water Works (PWSID IN5217007) is an active community water system in DeKalb County, Indiana. It reports serving 2,242 people through 771 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in November 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,242
Service connections
771
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Waterloo Water Works compare with other water systems in DeKalb County?
By EPA's size categories, Waterloo Water Works is a small system (501 to 3,300 people). DeKalb County has 50 active public water systems, and Waterloo Water Works is the 4th-largest of them by population served. Its population served is about 3.5 times the county average of 635 people per system, and accounts for 7.1% of the 31,731 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 Waterloo Water Works is about 67% 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 Waterloo Water Works?
EPA lists Waterloo Water Works as owned by a local government. 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 50 active systems in DeKalb County (12%) are also owned by a local government.
Does Waterloo Water Works have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in November 2005. The violations listed here began between June 1980 and November 2005. By type: 1 public notice, recordkeeping or other, 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminants or rules involved are Consumer Confidence Rule, Total coliform bacteria (TCR) and Gross alpha (excluding radon and uranium). EPA lists 2 as resolved and 1 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 |
|---|---|---|---|---|
| 2005-11-09 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2004-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1980-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 3 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.
Waterloo Water Works: frequently asked questions
Who runs Waterloo Water Works?
Waterloo Water Works (PWSID IN5217007) is a community water system owned by a local government. It is regulated by the IN state drinking water program.
How many people does Waterloo Water Works serve?
Waterloo Water Works reports serving 2,242 people through 771 service connections in DeKalb County, Indiana.
Where does Waterloo Water Works 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 Waterloo Water Works have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in November 2005. 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 Waterloo Water Works' 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 3 violations for this system; 1 is health-based, and the most recent began in November 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the IN state drinking water program.
Where can I find Waterloo Water Works' water quality report?
As a community water system, Waterloo Water Works 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 DeKalb County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Auburn Water Department | DeKalb | 12,800 | Community | Groundwater |
| Garrett Water Utility | DeKalb | 6,390 | Community | Groundwater |
| Butler Water Department | DeKalb | 2,700 | Community | Groundwater |
| Lakewood Park Baptist Church/School | DeKalb | 1,100 | Non-transient non-community | Groundwater |
| Steel Dynamics | DeKalb | 1,000 | Non-transient non-community | Groundwater |
| St. Michaels Church | DeKalb | 601 | 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, “Waterloo Water Works, PWSID IN5217007, Indiana”, https://aquacensus.com/water-systems/indiana/waterloo-water-works-in5217007 (data as of October 1, 2026).