PITTSTON TWP. – A group of inventors from China has found a way to take water, the nation’s top-selling bottled drink, and infuse it with omega-3 fatty acids, the second-best-selling supplement. And Nature’s Way Pure Water Systems Inc., the Pittston-area bottler, will be the only source in the U.S. of the revolutionary product for years to come. The product is going into limited-batch testing in December, followed by full production in January. “Omega-3, next to multivitamins, that’s the No. 2 item that’s sold in health stores throughout the country … but it’s never been in water because (the industry) never...