Important Contacts CoServ Gas Emergency Contacts Download Now Animal Control972-382-3647 After Hours Water Emergency214-397-6806 City Hall972-292-3223 Co-Serv Electric940-321-7800 Denton County Permits 940-349-2990(outside of City of Hackberry City Limits) Denton County Sheriff Department972-349-1600 Frisco Fire Department 972-292-6300 Little Elm Police Department214-975-0460 (these are all non-emergency numbers)