The layer in the ground in which all available interstitial voids (cracks, crevices, holes) are filled with water. The level of the top of this zone […]
A term formerly used for the removal of calcium and magnesium hardness from water by base exchange using natural or synthetic zeolites. Since the introduction of […]
Hydrated sodium alumina silicates, either naturally-occurring mined products or synthetic products, with ion exchange properties. Zeolites were formerly used extensively for residential and commercial water softening […]
A bored, drilled, or driven shaft, or a dug hole, whose depth is greater than the largest surface dimension and whose purpose is to reach underground […]
The Water Quality Association (WQA) is a not-for-profit international trade association representing the household, commercial, light-industrial, and small system water quality improvement industry. (www.wqa.org)
Any point-of-use or point-of-entry instrument or contrivance sold or offered for rental or lease for residential or commercial use, and designed to be added to the […]
