Potable Water - Home Storage System
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Underground Water Storage Tanks
POTABLE WATER (often called Domestic water, Drinking water, or Culinary water) is suitable for human consumption or use in the preparation of food. Darco manufactures fiberglass underground water tanks for potable water storage. Such systems can serve individual homes or an entire subdivision based on the storage capacity requirements. As a general rule, potable water holding tanks should be sized to store no more than a 30 day water supply to maintain freshness and flavor.
The Residential Storage System illustrated in drawing #1 incorporates 6,000 gallons of domestic water storage and a submersible bottom suction relay pump which delivers water to the hydro-pneumatic pressure tank inside the dwelling served. The pump may be submerged inside the potable water storage tank itself, located in a remote wet well, in the basement of the building, or in a small pump house located above the tank. Choose the pump style and location which best fits your particular water system size and configuration.
Commercial / Industrial applications often require higher pressure and flow than an internally mounted submersible residential style bottom suction pump can deliver. In such cases, a "wet well" constructed of PVC pipe is installed adjacent to the potable water storage tank and fitted with a higher horsepower center suction deep well style relay pump, as illustrated in drawing #2.
The High Volume Community System illustrates several large fiberglass storage tanks manifolded together to feed a wet well located under the pump house. Well water can be filtered or treated on the way to storage, and then delivered into the community service piping. Large drinking water storage tank systems allow chlorination contact and also provide a low cost fire protection water supply for the fire department. Fire trucks can draft directly from a suction hydrant located near the tank system as illustrated in drawing #3.
In all 3 illustrations, Darco underground fiberglass tanks provide a potable water supply that is out of sight, cool, secure, and ice free. There is no ugly above ground high profile structure to detract from nearby real estate value, block the view, or attract vandalism.