Public water system · IN2450825
ActiveHarry Os
Transient non-community water system in Lake County, Indiana, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
220
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
Violations & enforcement
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2024-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2022-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Harry Os: frequently asked questions
Is Harry Os's water safe to drink?
Harry Os is an active transient non-community water system regulated under the Safe Drinking Water Act, overseen by the IN state drinking water program. EPA's SDWA data records violations for this system — the most recent are listed on this page; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs Harry Os?
Harry Os (PWSID IN2450825) is a private-owned transient non-community water system, regulated by the IN state drinking water program.
How many people does Harry Os serve?
Harry Os reports serving 220 people through 1 service connections in Lake County, Indiana.
Where does Harry Os get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in Lake County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Indiana American Water - Northwest | Lake | 210,510 | Community | Surface water |
| Hammond Water Works Department | Lake | 78,384 | Community | Surface water |
| Schererville Water Department | Lake | 30,000 | Community | Purchased surface water |
| Crown Point Water Works | Lake | 30,000 | Community | Purchased surface water |
| East Chicago Water Works | Lake | 26,370 | Community | Surface water |
| St. John Municipal Water Utility | Lake | 25,700 | Community | Groundwater |
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