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Earnings per share (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Earnings per share |  |  |  |
Net income from continuing operations attributable to Consolidated Water Co. Ltd. stockholders | $ 4,242,411 | $ 7,531,472 | $ 11,183,825 | $ 11,604,261
Less: preferred stock dividends | (4,660) | (4,087) | (8,843) | (7,010)
Net income from continuing operations available to common shares in the determination of basic earnings per common share | 4,237,751 | 7,527,385 | 11,174,982 | 11,597,251
Income (loss) from discontinued operations | 11,607,846 | (207,701) | 11,140,780 | (466,864)
Net income available to common shares in the determination of basic earnings per common share | $ 15,845,597 | $ 7,319,684 | $ 22,315,762 | $ 11,130,387
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) | 15,829,120 | 15,736,041 | 15,829,024 | 15,729,852
Weighted average number of preferred shares outstanding during the period (in shares) | 44,176 | 34,695 | 44,178 | 34,540
Potential dilutive effect of unexercised options and unvested stock grants | 110,375 | 136,704 | 110,952 | 135,531
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders | 15,983,671 | 15,907,440 | 15,984,154 | 15,899,923

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