Public water system · IN2170036
ActiveOld Castle
At a glance
Old Castle (PWSID IN2170036) is an active non-transient non-community water system in DeKalb County, Indiana. It reports serving 29 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
29
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Old Castle compare with other water systems in DeKalb County?
By EPA's size categories, Old Castle is a very small system (500 people or fewer). DeKalb County has 50 active public water systems. Its population served is well below the county average of 635 people per system, and accounts for less than 0.1% 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 non-transient non-community water system reports serving 430 people, so Old Castle is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Indiana has 603 active non-transient non-community water systems, 15% 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 Old Castle?
EPA lists Old Castle 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. 44 of the 50 active systems in DeKalb County (88%) are also privately owned.
Does Old Castle have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2019. The violations listed here began between January 2015 and October 2019. By type: 2 reporting and 2 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2019-10-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-04-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
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.
Old Castle: frequently asked questions
Who runs Old Castle?
Old Castle (PWSID IN2170036) is a non-transient non-community water system privately owned. It is regulated by the IN state drinking water program.
How many people does Old Castle serve?
Old Castle reports serving 29 people through 1 service connection in DeKalb County, Indiana.
Where does Old Castle 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 Old Castle have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2019. 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 Old Castle'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; none is health-based, and the most recent began in October 2019. For current results, consult EPA ECHO, or the IN state drinking water program.
Where can I find Old Castle's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Old Castle is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
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 |
| Waterloo Water Works | DeKalb | 2,242 | 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 |
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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, “Old Castle, PWSID IN2170036, Indiana”, https://aquacensus.com/water-systems/indiana/old-castle-in2170036 (data as of October 1, 2026).