Public water system · CA4000501
ActiveHalcyon Water System
Community water system in San Luis Obispo County, California, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
110
Service connections
46
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-10-01 | 03 | 1045 | No | Archived |
| 2025-07-01 | 03 | 1045 | No | Archived |
| 2025-01-01 | 03 | 1045 | No | Archived |
| 2024-10-17 | 2E | 5200 | Yes | Unaddressed |
| 2024-10-17 | 4G | 5200 | No | Unaddressed |
| 2024-10-01 | 03 | 1045 | No | Archived |
| 2024-07-01 | 03 | 1045 | No | Archived |
| 2024-04-01 | 03 | 1045 | No | Archived |
| 2024-01-01 | 03 | 1040 | No | Resolved |
| 2023-07-01 | 03 | 1040 | No | Archived |
| 2023-04-01 | 03 | 1040 | No | Archived |
| 2023-01-01 | 03 | 1040 | No | Archived |
Halcyon Water System: frequently asked questions
Is Halcyon Water System's water safe to drink?
Halcyon Water System is an active community water system regulated under the Safe Drinking Water Act, overseen by the CA state drinking water program. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs Halcyon Water System?
Halcyon Water System (PWSID CA4000501) is a private-owned community water system, regulated by the CA state drinking water program.
How many people does Halcyon Water System serve?
Halcyon Water System reports serving 110 people through 46 service connections in San Luis Obispo County, California.
Where does Halcyon Water System get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in San Luis Obispo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Santa Margarita Recreation Area | San Luis Obispo | 50,001 | Transient non-community | Groundwater |
| San Luis Obispo Water Department | San Luis Obispo | 47,788 | Community | Surface water |
| City of Paso Robles Water Division | San Luis Obispo | 31,176 | Community | Surface water |
| Atascadero Mutual Water Co | San Luis Obispo | 30,618 | Community | Groundwater |
| City of Arroyo Grande Utilities Division | San Luis Obispo | 17,963 | Community | Purchased surface water |
| California Mens Colony | San Luis Obispo | 15,000 | Community | Surface water |