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Earnings per share (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Earnings per share |  |
Net income from continuing operations attributable to Consolidated Water Co. Ltd. stockholders | $ 8,227,343 | $ 3,449,658
Less: preferred stock dividends | (11,532) | (10,796)
Net income from continuing operations available to common shares in the determination of basic earnings per common share | 8,215,811 | 3,438,862
Total loss from discontinued operations | (2,371,049) | (2,574,079)
Net income available to common shares in the determination of basic earnings per common share | $ 5,844,762 | $ 864,783
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) | 15,290,509 | 15,213,816
Weighted average number of preferred shares outstanding during the period (in shares) | 31,885 | 30,348
Potential dilutive effect of unexercised options and unvested stock grants | 79,259 | 65,981
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders | 15,401,653 | 15,310,145

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