Water Quality in ZIP Code 78666
Serving San Marcos, TX
Is Water Safe in ZIP Code 78666?
Water in ZIP code 78666 has 27 contaminants above EPA health-based guidelines (MCLGs) in at least one of the 1 city served. We recommend reviewing detailed city reports below and considering a certified water filter for additional protection.
This ZIP code is served by 10 water utilities providing water to San Marcos. Water quality varies by utility and city. Click on the cities below to see detailed reports for your specific area.
Water Quality Report for ZIP 78666
5 contaminants above EPA health guidelines
These levels represent the worst case across all cities in this ZIP code. Check individual city reports for specific details.
Found in San Marcos
Found in San Marcos
Found in San Marcos
Found in San Marcos
Found in San Marcos
Water Utilities Serving ZIP 78666
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Best Water Filters for ZIP 78666
Based on the contaminants found in your area, we recommend NSF-certified water filters that can remove the specific contaminants above health guidelines.
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