Cultec has launched a residential rainwater harvesting (CRRH) program that can reduce household demand for clean non-potable water supply. In such a system, the company’s Recharger and Contactor chambers capture and store rainwater that can be used for such activities as irrigation, fire prevention, sprinkler reserve and exterior cleaning.
The CRRH program offers multiple benefits to builders and homeowners. Specifically it:
Creates a water reserve at no additional cost and without environmental impact;
Offers potential cost-savings to homeowners by reducing their demand on municipal or well water for household uses; for example, a typical lawn can require about 3,000 gallons or 11,355 liters of water a month, depending on the climate.
Stores a large volume of water in a small area;
Provides cost-effective stormwater management, eliminating poor drainage around the house; and
Allows builders to earn LEED credits for CRRH installations when projects are designed per LEED requirements.
A CRRH system installation consists of collecting rainwater via a gutter or other drainage structure, conveying the water through a small water quality unit such as a Cultec StormFilter T-80 to remove leaves and debris, and then piping it to one or more Cultec stormwater chambers based on the storage volume. An impermeable liner is used within the chamber bed to prevent infiltration into the ground, thus creating a subsurface storage area. A submersible pump conveys the collected rainwater from the chambers to the spot where it will be used. An overflow area must also be employed for systems not installed below the frost line to prevent freezing and heaving.