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TUD - UPPER BASIN WATER SYSTEM

Serving 1 city in CA

Monitor
1 above health guidelines
11K
People Served
1
City
1
Water Sources
0
MCL Violations

TUD - UPPER BASIN WATER SYSTEM Water Quality Grade

A
Excellent

Water meets all health guidelines with no violations.

Quality Score90/100
1
Above Health Guidelines
0
EPA Violations

Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).

Is TUD - UPPER BASIN WATER SYSTEM Water Safe to Drink?

TUD - UPPER BASIN WATER SYSTEM has reported 1 contaminant above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.

This utility serves 11,018 people across 1 city in CA. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.

TUD - UPPER BASIN WATER SYSTEM Service Area

TUD - UPPER BASIN WATER SYSTEM Contact & Information

For hours of operation and emergency contact information, please visit the official utility website or call the main phone number.

Water Sources & Treatment

Water Sources

Surface water

Treatment Methods

Not specified

Recommended Water Filters for TUD - UPPER BASIN WATER SYSTEM

Based on water quality data from cities served by TUD - UPPER BASIN WATER SYSTEM, we recommend NSF-certified filters that can remove contaminants above health guidelines.

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TUD - UPPER BASIN WATER SYSTEM Water Quality 2026: Is It Safe? | Twain Harte, California | TapWaterData