NEW YORK — The International Securities Exchange (ISE) announced that it is launching the Water Index, according to a Jan. 5 ISE press release. The Water Index is comprised of companies in the water infrastructure, filtration, distribution, purification, and treatment industries, the release said. The index contains 20 stocks that trade in the US market, and the index is the basis for cash-settled index options, which will list and begin trading on ISE under the symbol HHO, the release said. To read the full story, click here. To subscribe to Water Technology® magazine, click here. For more of the latest news, click here. For related information on this story, click here. To discuss this topic with other water and wastewater industry professionals, click here.