Earnings per share

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

6. Earnings per share

Earnings per share (“EPS”) are computed on a basic and diluted basis. Basic EPS is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. The computation of diluted EPS assumes the issuance of common shares for all potential common shares outstanding during the reporting period and, if dilutive, the effect of stock options using the treasury stock method.

The following summarizes information related to the computation of basic and diluted EPS for the three and six months ended June 30, 2012 and 2011.

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Net income attributable to Consolidated Water Co. Ltd. common stockholders	$	1,957,492		$	1,929,662		$	4,300,158		$	3,922,672
Less: Preferred stock dividends		(2,421	)		(1,921	)		(4,842	)		(3,851	)
Net income available to common shares in the determination of basic earnings per common share	$	1,955,071		$	1,927,741		$	4,295,316		$	3,918,821
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders		14,579,496			14,558,937			14,574,689			14,557,606
Plus:
Weighted average number of preferred shares outstanding during the period		24,082			17,725			23,187			17,174
Potential dilutive effect of unexercised options		274			18,423			178			22,263
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders		14,603,852			14,595,085			14,598,054			14,597,043