Drinking Water Systems Reported for ZIP 91931
GUATAY, California — 1 water system is associated with this ZIP in EPA service-area data
Largest Reported System
GUATAY MUTUAL BENEFIT CORPORATION
PWSID: CA3700897
7 EPA violation records in the five-year period ending June 30, 2026
F
Frequent health-based records
TapScore compliance-history grade