2 Va. Admin. Code § 5-585-2060
An approved water system shall be flushed and disinfected after construction, repair, or modification and after an emergency situation, such as a flood, that may introduce contaminants to the system. A sample shall be collected from the water system and the results of the analysis shall be total coliform negative prior to placing the water system into service.P
§ 3.2-5121 of the Code of Virginia.
Derived from Virginia Register Volume 24, Issue 2, eff. October 16, 2007; amended, Virginia Register Volume 32, Issue 22, eff. July 12, 2016.