UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Title of each class Trading Symbol(s) Name of each exchange on which registered Class A common stock, $0.60 par value CWCO The Nasdaq Global Select Market FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _____ ...