Mississippi Administrative Code
Title 15 - Mississippi Department of Health
Part 20 - Bureau of Public Water Supply
Subpart 72 - Public Water Supply
Chapter 1 - MISSISSIPPI PRIMARY DRINKING WATER REGULATION
Subchapter 14 - Testing Of Backflow Prevention Assemblies
Rule 15-20-72-1.14.3

The Certified Tester shall provide the property owner and the public water system with a written report of the inspection and test results on each assembly tested. This written report shall be on a form provided by the Department. The report shall be prepared and submitted by the Certified Tester making the inspection and test. The Certified Tester and the public water system shall retain all backflow prevention assembly test and inspection results for at least five (5) years from the date of test and inspection.

Miss. Code Ann. § 41-26-14