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Earnings per share (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Line Items]
Net income attributable to Consolidated Water Co. Ltd. common stockholders	$ 1,882,692	$ 908,690	$ 5,297,294	$ 7,504,542
Less: preferred stock dividends	(2,777)	(2,885)	(8,722)	(8,655)
Net income available to common shares in the determination of basic earnings per common share	$ 1,879,915	$ 905,805	$ 5,288,572	$ 7,495,887
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)	14,700,939	14,644,740	14,695,446	14,626,755
Weighted average number of preferred shares outstanding during the period (in shares)	39,348	39,680	38,256	33,888
Potential dilutive effect of unexercised options (in shares)	23,627	50,496	30,425	21,543
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders (in shares)	14,763,914	14,734,916	14,764,127	14,682,186

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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