(a) This chapter applies to money collected or held by a district, county, or precinct officer in a county and by the officers of a defined district or subdivision in the county, including the funds of a municipal or quasi-municipal subdivision or corporation that has the power to select its own depository but has not done so. The money shall be deposited under this chapter, and the money shall be considered in fixing, and is protected by, a county depository's bond.
(b) Orders for payment, checks, and vouchers evidencing the money deposited in the county depository under Subsection (a) are subject to audit and countersignature as provided by law.