Drinking Water Systems Reported for ZIP 85637
SONOITA, Arizona — 2 water systems are associated with this ZIP in EPA service-area data
Largest Reported System
CASAS ARROYO ASSOCIATION INC
PWSID: AZ0412020
1 EPA violation record in the five-year period ending June 30, 2026
B
Few non-health records
TapScore compliance-history grade