Earnings per share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Earnings per share
Net income from continuing operations attributable to Consolidated Water Co. Ltd. stockholders	$ 3,449,658	$ 8,613,771
Less: preferred stock dividends	(10,796)	(11,740)
Net income from continuing operations available to common shares in the determination of basic earnings per common share	3,438,862	8,602,031
Total loss from discontinued operations	(2,574,079)	(4,902,243)
Net income (loss) available to common shares in the determination of basic earnings per common share	$ 864,783	$ 3,699,788
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)	15,213,816	15,119,305
Weighted average number of preferred shares outstanding during the period (in shares)	30,348	33,814
Potential dilutive effect of unexercised options and unvested stock grants	65,981	70,836
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders	15,310,145	15,223,955