Public water system record
Yosemite NPS-El Portal
Serves an area of Mariposa County, CA · 635 people served
Federal records show no health-based violations and no monitoring or reporting issues for Yosemite NPS-El Portal in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Yosemite NPS-El Portal draws water from 6 wells (1 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by California, November 2007.
- Record on file since 1980, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 233 service lines.
Check whether Yosemite NPS-El Portal serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016, and no monitoring or reporting violations either.
Full record since 1980
EPA's records for Yosemite NPS-El Portal go back to 1980. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 1 |
| 1990s | 2 | 0 |
| 2000s | 0 | 6 |
Most recent health-based violation before October 19, 2016: Total Coliform, began February 1994, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1992 | Resolved |
Enforcement actions
California regulators took 3 formal enforcement actions against Yosemite NPS-El Portal between 2005 and 2007. The most recent was a compliance order (no penalty) in November 2007.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 9, 2007 | California | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
| Nov 14, 2006 | California | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
| Dec 28, 2005 | California | Compliance order (no penalty) | 4 violations: Lead and Copper Rule |
Where the water comes from
Yosemite NPS-El Portal draws water from 6 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Yosemite NPS-El Portal must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.
Certified drinking water labs by state EPA guidance for private wells