YOSEMITE NP, CA · Mariposa County
YOSEMITE NPS-EL PORTAL Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA2210515
- System type
- Community Water System
- Population served
- 635
- Service connections
- 226
- Ownership
- federal government
- Water source
- groundwater (wells)
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2007 – November 9, 2007
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
February 1, 1994 – February 28, 1994
ResolvedNotification, Public
—No contaminant on record
September 30, 1980 – October 29, 1980
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2007 – November 9, 2007 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| February 1, 1994 – February 28, 1994 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| September 30, 1980 – October 29, 1980 | Notification, Public | — | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Contact
TRUMM, MICHAEL
209-379-1055
YOSEMITE NP, CA 95389