Add Yahoo as a preferred source to see more of our stories on Google. Cason Gilmer, a senior field customer service representative for the Las Virgenes Municipal Water District, holds a water flow ...

Flow is controlled by either throttling or diverting it. Throttling involves reducing orifice size until all of the flow cannot pass through the orifice; bypassing involves routing part of the flow ...

The disk is small and compact, no bigger across than a quarter. But Kathryn Sorensen and the staff at Phoenix Water Services Department think the little device — and the pinhole in its center that ...