Energy Recovery, Inc. (ERII) Downgraded to Hold at Zacks Investment Research Zacks Investment Research downgraded shares of Energy Recovery, Inc. (NASDAQ:ERII) from a buy rating to a hold rating in a report released on Friday. According to Zacks, “Based in San Leandro, California, ENERGY RECOVERY, INC. is a leading global developer and manufacturer of highly efficient energy recovery devices utilized in the water desalination industry. Energy Recovery, Inc. operates primarily in the sea water reverse osmosis segment of the desalination industry.ERI manufactures… (LINK) DME GmbH2017-05-10T11:51:37+02:00