Miss. Code Ann. § 41-67-23: Miss. Code Ann. § 41-67-23

The department or its authorized representative may enter onto property and make inspections of any individual on-site wastewater disposal system as necessary to ensure that the system is in compliance with this chapter and the rules and regulations adopted under this chapter. The department shall give reasonable notice to any property owner, lessee or occupant prior to entry onto the property. The owner, lessee, owner's representative, or occupant of the property on which the system is located shall give the department or its authorized representative reasonable access to the property at reasonable times to make necessary inspections.