Colo. Rev. Stat. § 31-25-615
It is the duty of the body having authority to levy taxes within such county to levy the taxes certified to it as provided in this part 6. It is the duty of all officials charged with the duty of collecting taxes to collect and enforce such taxes at the time and in the form and manner and with like interest and penalties as other taxes are collected and, when collected, to pay the same to the district ordering its levy and collection. The payment of such collections shall be made monthly to the treasurer of the district and paid into the depository thereof to the credit of the district. All taxes levied under this part 6, together with interest thereon and penalties for default in payment thereof, and all costs of collecting the same shall constitute a lien, until paid, on and against the property taxed, and such lien shall be a lien as for all other general taxes.
C.R.S. § 31-25-615
This section is similar to former § 31-25-615 as it existed prior to 1975.