Public water system · 090605146
ActiveLa Posta Upper
Community water system in California, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
73
Service connections
15
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | 03 | 4000 | No | Archived |
| 2025-07-01 | 03 | 4010 | No | Archived |
| 2025-07-01 | 03 | 4006 | No | Archived |
| 2024-08-01 | 3A | 8000 | No | Resolved |
| 2024-07-01 | 27 | 0999 | No | Resolved |
| 2023-01-01 | 01 | 1040 | Yes | Resolved |
| 2021-07-01 | 01 | 1040 | Yes | Resolved |
| 2021-04-01 | 03 | 1040 | No | Resolved |
| 2021-01-01 | 01 | 1040 | Yes | Resolved |
| 2020-04-01 | 01 | 1040 | Yes | Resolved |
| 2016-07-01 | 52 | 5000 | No | Resolved |
| 2009-01-01 | 23 | 3100 | No | Resolved |
La Posta Upper: frequently asked questions
Is La Posta Upper's water safe to drink?
La Posta Upper is an active community water system regulated under the Safe Drinking Water Act, overseen by the EPA Region 09. 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 La Posta Upper?
La Posta Upper (PWSID 090605146) is a native american-owned community water system, regulated by the EPA Region 09.
How many people does La Posta Upper serve?
La Posta Upper reports serving 73 people through 15 service connections in California.
Where does La Posta Upper get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in California
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| New York City System | Richmond | 8,271,000 | Community | Surface water |
| Los Angeles-City, Dept. of Water & Power | Los Angeles | 7,751,132 | Community | Surface water |
| City of Houston | Harris | 2,970,543 | Community | Surface water |
| Chicago | Cook | 2,746,388 | Community | Surface water |
| MWRA | Suffolk | 2,660,000 | Community | Surface water |
| Mdwasa - Main System | Miami-Dade | 2,377,460 | Community | Groundwater |