Filtration and subsurface distribution system

A filtration and subsurface distribution system comprising:

• a sand filter pump located within a recirculating pump tank having a first height, the sand filter pump dosing a sand filter with the effluent;
• a dosing vault for receiving filtrate from the sand filter, the dosing vault being located within the recirculating pump tank and being an open top at a second height lower than the first height and isolating the filtrate from the effluent in the recirculating pump tank;
• a dosing pump for dosing an absorption drain field with the filtrate in the dosing vault, the dosing pump being located within the dosing vault and isolated from the effluent;
• and
• a control unit adapted to prevent the effluent or filtrate from rising above the second height and further being associated with the sand filter pump and the dosing pump, the control unit controlling the sand filter pump and the dosing pump in tandem.

A filtration and subsurface distribution system comprising:

• a sand filter pump located within a recirculating pump tank, the sand filter pump dosing a sand filter with the effluent;
• a dosing vault for receiving filtrate from the sand filter, the dosing vault isolating the filtrate from the effluent in the recirculating pump tank;
• a dosing pump for dosing an absorption drain field with the filtrate in the dosing vault, the dosing pump being located within the dosing vault and isolated from the effluent;
• a control unit associated with the sand filter pump and the dosing pump, the control unit controlling the sand filter pump and the dosing pump in tandem;
• a high level alarm float, wherein the high level alarm float is adapted to warn a user when (i) there is an effluent flow rate which is higher than the sand filter pump capacity, (ii) there is a failure of the sand filter pump or (iii) a failure of the dosing pump;
• and
• an on/off float associated with the dosing pump, the on/off float being at a level higher than the high level alarm float.