(1) A county legislative authority in a county with a population of less than one million may submit an authorizing proposition to the county voters, and if the proposition is approved by a majority of persons voting, fix and impose a sales and use tax in accordance with the terms of this chapter for the purposes designated in subsection (3) of this section.

(2) The tax authorized in this section shall be in addition to any other taxes authorized by law and shall be collected from those persons who are taxable by the state under chapters 82.08 and 82.12 RCW upon the occurrence of any taxable event within the county. The rate of tax shall equal one-tenth of one percent of the selling price in the case of a sales tax, or value of the article used, in the case of a use tax.

(3) Moneys received from any tax imposed under this section shall be used solely for the purpose of providing funds for costs associated with financing, design, acquisition, construction, equipping, operating, maintaining, remodeling, repairing, reequipping, and improvement of juvenile detention facilities and jails.

(4) Counties are authorized to develop joint ventures to colocate juvenile detention facilities and to colocate jails.