Page 57 - 2014 SDCA Project

III. LOW FLOW WATER CLOSET with SOLAR POWERED BATTERY OPERATED SENSOR

A pre 1994 flush-toilet or gravity-fed toilet uses 3.4 US gallons or 2.8 imperial gallons or more per flush. In 1992, the
United States Congress passed the Energy Policy Act of 1992, which mandated that, from 1994, the common flush-

toilet use only 1.6 US gallons of water per flush. Low flow water closets possess an effective flush volume of 1.28
US gallons or less.Low flow water closets may be single-flush or dual-flush. A dual-flush toilet permits its user to
choose between two amounts of water. Some Low flow water closets are pressure-assisted (or power-assisted or

pump-assisted or vacuum-assisted).
The performance of a flush-toilet may be rated by a Maximum Performance (MaP) score. The low end of MaP

scores is 250. The high end of MaP scores is 1000. A toilet with a MaP score of 1000 should provide trouble-free
service. It should remove all waste with a single flush; it should not plug; it should not harbor any odor; it should be
easy to keep clean. The United States Environmental Protection Agency uses a MaP score of 350 as the minimum

performance threshold for Low flow water closets.

Advantages: Disadvantages:

Reduced water and sewer cost Specifying the right manufacturer
Qualify for USGBC LEED point

Installation in new and retrofit situations
Payback around 1 ½ to 3 years
Environmentally friendly

IV. Faucet’s with LOW FLOW AERATOR and SOLAR POWERED BATTERY OPERATED SENSOR

The installation of faucets with solar powered battery operated sensors and low flow aerators’ (0.5 gpm), will save LOW FLOW TOILETS
the owner money and water usage.

Advantages: Disadvantages:

Reduced water and sewer cost Educating janitorial staff on who replaces batteries
Qualify for USGBC LEED point

Installation in new and retrofit situations
Environmentally friendly

55 SDCA