NSF Product and Service Listings

[1] This product is designed to be used off-line following manufacturer's use
    instructions. The well is to be flushed until the turbidity of the water is < 1 NTU
    before the system may be used for drinking water.

[2] This product is designed to be flushed out until the turbidity of the water is < 1 NTU. 
     Flushing is required before the system may be used for drinking water.

[1] These products are designed to be flushed out prior to using the system for drinking
    water. Before being placed into service, the well is to be properly flushed according to
    the manufacturer's use instructions. Certification of these products is based on the
    well drilling model with the following assumptions:
    - The amount of well drilling fluid used is 3780 L (1000 U.S. gallons) to which the
    drilling fluid has been added at the manufacturer's recommended level.
    - The aquifer contains 3.1 million liters of water (815,000 gallons) based on a 0.5 acre
    aquifer of 6.1 meter depth (20 ft.) and 25% porosity.
    - The bore hole is 61 meters in total depth (200 ft.), the screen is 6.1 meters in
    length (20 ft.), and the bore hole is 25.4 cm. in diameter (10 in.).
    - The amount of well drilling fluid removed from the well during construction is equal
    to the combined volumes of the casing and the screen, plus an additional amount removed
    through the well disinfection and development (90% removed).
    - This product should not be used in constructing wells in highly porous formations,
    such as cavernous limestone.

[2] This product is designed to be used off-line and flushed out prior to using the system
    for drinking water, following manufacturer's use instructions.

[1] This product is designed to be used off-line following manufacturer's use instructions. 
    The well is to be flushed until the turbidity of the water is <1 NTU before the system
    may be used for drinking water.