Water Quality in Yosemite Np, CA (95389)
EPA violation data for public water systems serving ZIP code 95389.
No Health-Based Violations
None of the 34 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There is1 monitoring/reporting violation (missed testing deadlines), all resolved.
Better than 29% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
2,181
Population
34
Water Systems
1
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (34)
Yosemite Nps-Glacier Point
Yosemite Nps-Mariposa Grove
Yosemite Nps - Vernal Falls
Yosemite Nps-Tuolumne Meadows
Yosemite Nps-Bridalveil Fall
Yosemite Nps-Tenaya Lake
Yosemite Nps-Badger Pass
Yosemite Nps-Yosemite Valley
Yosemite Nps-El Portal
Yosemite Nps-Crane Flat
Yosemite Nps-Bridalveil Creek Cg
Redwoods Water System
Redwoods Water System
Yosemite Nps-May Lake Camp
Yosemite Nps-White Wolf
Camp Wawona
All resolvedYosemite Nps-Arch Rock
Yosemite West
Seven Day Adventist Camp
Yosemite Nps-Wawona
Yosemite Nps-Vogelsang
Yosemite Nps-Glen Aulin
Yosemite Nps-Sunrise Hi
Yosemite Nps-Merced Lake Camp
North Wawona Park
North Wawona Estates
Yosemite Nps-Hodgdon Meadow
Camp Chilnualna Water System
Yosemite Nps-Tioga Pass
Yosemite Nps-Mather Ranger
Yosemite Nps-Cascade
Yosemite Nps - Forresta Camp
Yosemite Nps-Yosemite Creek
Nps (National Park Service)
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Yosemite Np (95389) has more violations than 29% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 1, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.