Drain cleaning and maintenance system and method

A drain cleaning and maintenance system, comprising:

• (a) a drain trap, having a first inlet in fluid communication with a drain of a plumbing fixture;
• (b) a second inlet, in fluid communication with the drain trap;
• and
• (c) a cleaning and maintenance assembly, in fluid communication with the second inlet, the cleaning and maintenance assembly comprising:
• (i) a maintenance-assembly inlet, in fluid communication with a source of pressurized liquid;
• (ii) a maintenance-assembly outlet in fluid communication with an interior of the drain trap;
• (iii) a pipe disposed between the maintenance-assembly inlet and the maintenance-assembly outlet;
• (iv) an electronic valve having an open state allowing flow of liquid, from the maintenance-assembly inlet to the maintenance-assembly outlet, through the pipe, and a closed state blocking flow of liquid from the maintenance-assembly inlet to the maintenance-assembly outlet;
• (v) an electronic controller adapted to transition the electronic valve between the open state and the closed state;
• and
• (vi) a power source adapted to power the electronic controller and the electronic valve,
• wherein, when the electronic valve is in the open state, liquid flows from the source of pressurized liquid to the drain trap via the electronic valve.