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Earnings per share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net income attributable to Consolidated Water Co. Ltd. stockholders	$ 2,631,228	$ 2,054,641
Less: preferred stock dividends	(2,642)	(2,850)
Net income available to common shares in the determination of basic earnings per common share	$ 2,628,586	$ 2,051,791
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders	14,871,862	14,783,380
Plus:
Weighted average number of preferred shares outstanding during the period	35,225	38,584
Potential dilutive effect of unexercised options and unvested stock grants	128,132	42,161
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders	15,035,219	14,864,125

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