Section 41.07. Provision of services by the local governmental unit

(a) Local governmental units may provide local or unified services and
  facilities  directly or may contract for the provision of those services
  by other units of local or state government, by voluntary  agencies,  or
  by professionally qualified individuals.
    (b) Subject to the approval of the commissioners of the offices having
  jurisdiction  over  the  services, local governments may arrange for the
  provision of services eligible for state aid outside  their  territorial
  jurisdictions or the state.
    (c)  Local governments may provide joint local or unified services and
  facilities through agreements, made pursuant to law, which  may  provide
  either  that  one  local government provide and supervise these services
  for other local governments or that a  joint  board  or  a  joint  local
  department   be   established  to  administer  these  services  for  the
  populations of all contracting local governments.