Miss. Code § 41-3-17
The State Board of Health is authorized to make and publish all reasonable rules and regulations necessary to enable it to discharge its duties and powers and to carry out the purposes and objectives of its creation. It is further authorized to make reasonable sanitary rules and regulations, to be enforced in the several counties by the county health officer under the supervision and control of the State Board of Health. The State Board of Health shall not make or enforce any rule or regulation that prohibits consumers from providing their own containers for the purpose of purchasing or accepting water from any vending machine or device which filters or treats water that has already been tested and determined to meet or exceed the minimum health protection standards prescribed for drinking water under the Mississippi Safe Drinking Water Law, if that vending machine or device meets or exceeds United States Environmental Protection Agency or national automatic merchandising standards.
Miss. Code § 41-3-17