5. Earnings per share

Earnings per share (“EPS”) are computed on a basic and diluted basis. Basic EPS is computed by dividing net income (less preferred stock dividends) 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 as computed under the treasury stock method.

The following summarizes information related to the computation of basic and diluted EPS:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Net income from continuing operations attributable to Consolidated Water Co. Ltd. stockholders	$	1,727,052	$	4,309,027	$	6,768,575	$	7,963,313
Less: preferred stock dividends		(2,869)		(3,102)		(9,068)		(9,398)
Net income from continuing operations available to common shares in the determination of basic earnings per common share		1,724,183		4,305,925		6,759,507		7,953,915
Total income from discontinued operations		—		243,362		3,621,170		869,794
Net income available to common shares in the determination of basic earnings per common share	$	1,724,183	$	4,549,287	$	10,380,677	$	8,823,709

Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders		15,026,710		14,963,195		15,022,489		14,960,602
Plus:
Weighted average number of preferred shares outstanding during the period		34,507		37,621		34,061		35,066
Potential dilutive effect of unexercised options and unvested stock grants		76,877		123,904		76,293		123,747
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders		15,138,094		15,124,720		15,132,843		15,119,415