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Earnings per share (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share [Line Items]      
Net income attributable to Consolidated Water Co. Ltd. stockholders $ 7,518,701 $ 6,265,358 $ 8,594,519
Less: preferred stock dividends (12,028) (11,485) (11,222)
Net income available to common shares in the determination of basic earnings per common share $ 7,506,673 $ 6,253,873 $ 8,583,297
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders (in shares) 14,741,748 14,697,896 14,633,884
Weighted average number of preferred shares outstanding during the period (in shares) 38,612 37,924 34,827
Potential dilutive effect of unexercised options and unvested stock grants (in shares) 47,395 28,503 35,169
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders (in shares) 14,827,755 14,764,323 14,703,880