C.R.S. § 32-7-142

For the purpose of providing urban drainage and flood control, a service authority shall have, insofar as consistent with this article, any additional special powers applicable to the provision of that specific service as provided by article 11 of this title. The mill levy limitation for ad valorem taxes imposed by said article 11 shall be applicable to the service of providing urban drainage and flood control, when such service is provided by a service authority.