C.R.S. § 31-35-604: Work accepted - assessment - certified copy filed - lien.

Upon the final completion of the work, the governing body shall accept the same by ordinance and provide for an assessment against the properties connected according to the rules of apportionment as provided in section 31-35-603. Each assessment shall be separately numbered. Thirty days after the last publication of said ordinance, a certified copy of it shall be filed with the county treasurer of the county in which the property is situated and when so filed shall operate as a perpetual tax lien in favor of the municipality and shall be superior to all other liens except general tax liens.