Public water system · IN2180027
ActiveEmerald Lake
At a glance
Emerald Lake (PWSID IN2180027) is an active transient non-community water system in Delaware County, Indiana. It reports serving 25 people through 14 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
14
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Emerald Lake compare with other water systems in Delaware County?
By EPA's size categories, Emerald Lake is a very small system (500 people or fewer). Delaware County has 63 active public water systems. Its population served is well below the county average of 1,544 people per system, and accounts for less than 0.1% of the 97,272 people reported by systems filed under the county. Across Indiana, the 3,969 active systems average 1,456 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Emerald Lake is well below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Indiana has 2,596 active transient non-community water systems, 65% 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 Emerald Lake?
EPA lists Emerald Lake 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. 51 of the 63 active systems in Delaware County (81%) are also privately owned.
Does Emerald Lake have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 2023. The violations listed here began between January 2015 and January 2023. By type: 2 monitoring, 2 monitoring and reporting and 1 reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2023-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-10-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 5 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.
Emerald Lake: frequently asked questions
Who runs Emerald Lake?
Emerald Lake (PWSID IN2180027) is a transient non-community water system privately owned. It is regulated by the IN state drinking water program.
How many people does Emerald Lake serve?
Emerald Lake reports serving 25 people through 14 service connections in Delaware County, Indiana.
Where does Emerald Lake 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 Emerald Lake have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in January 2023. 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 Emerald Lake'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 5 violations for this system; none is health-based, and the most recent began in January 2023. For current results, consult EPA ECHO, or the IN state drinking water program.
Where can I find Emerald Lake's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Emerald Lake is a 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 Delaware County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Indiana American Water - Muncie | Delaware | 74,030 | Community | Surface water |
| Yorktown Water Department | Delaware | 6,200 | Community | Groundwater |
| Albany Water Department | Delaware | 2,165 | Community | Groundwater |
| Eaton Water Works | Delaware | 1,595 | Community | Groundwater |
| Daleville (Town of) | Delaware | 1,560 | Community | Groundwater |
| Park One Water | Delaware | 1,325 | 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, “Emerald Lake, PWSID IN2180027, Indiana”, https://aquacensus.com/water-systems/indiana/emerald-lake-in2180027 (data as of October 1, 2026).