9. Every system or facility used to disinfect water pursuant to section 5, 5.1 or 6 of this Regulation must be equipped with standby disinfection equipment that will ensure the disinfection treatment should the main treatment system or facility break down or stop.
This section does not apply to the addition of disinfectant to the disinfection systems or facilities of a distribution system serving only one building.
O.C. 647-2001, s. 9; O.C. 467-2005, s. 9; O.C. 70-2012, s. 10.