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Principal activity
6 Months Ended
Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Nature of Operations [Text Block]
1. Principal activity
 
Consolidated Water Co. Ltd., and its subsidiaries (collectively, the “Company”) supply water and provide water-related products and services to customers in the Cayman Islands, The Commonwealth of The Bahamas, the British Virgin Islands, and the United States. The Company produces potable water from seawater using reverse osmosis technology and sells this water to a variety of customers, including public utilities, commercial and tourist properties, residential properties and government facilities. The base price of water supplied by the Company, and adjustments thereto, are determined by the terms of a retail license and bulk water supply contracts which provide for adjustments based upon the movement in the government price indices specified in the license and contracts as well as monthly adjustments for changes in the cost of energy. The Company also manufactures and services a wide range of products and provides design, engineering, management, operating and other services applicable to commercial, municipal and industrial water production, supply
and treatment.