San Tan Valley Utility Providers Get a jump-start on switching your utility providers. Just call and give them your closing date. You can also do this online. Gas Southwest Gas - 877-860-6020Online Electric SRP - 877-860-6020Online Water/Sewer Epcor- 800-383-0834Online Internet Cox InternetOnline Garbage AZ Waste ManagementOnline Fire Dept Rural MetroOnline