Miss. Code Ann. § 19-5-19

(1) Any county which locates, develops, owns or operates a municipal solid waste management facility within the county, or any county within which is located or developed a municipal solid waste management facility that is part of a local nonhazardous solid waste management plan approved by the Commission on Environmental Quality in accordance with Section 17-17-227 , on its own behalf or as a member of a regional authority, is authorized to grant a tax abatement or exception from ad valorem taxation in an amount not to exceed fifty percent (50%) of the tax amended and levied against the real property located directly adjacent and surrounding the site of such facility or such other property within are made of the site which is determined by the board of supervisors to be impacted by the location and operation of the site.

(2) Any county, which is a member of a regional authority, and which grants the tax exemption authorized herein for a municipal solid waste management facility site of the regional authority, shall receive a credit against services received from the regional authority in an amount commensurate with the tax revenue lost as a result of tax exemptions granted pursuant to this section.