Other Affiliates	12 Months Ended
Dec. 31, 2011
Other Affiliates	9. Other Affiliates CW-Bermuda In June 2006, the Company formed a Bermuda-based affiliate, Consolidated Water (Bermuda) Limited (“CW-Bermuda”) with two other shareholders. The Company owns 40% of the equity interest and voting rights of CW-Bermuda. In January 2007, CW-Bermuda entered into a design, build, sale and operating agreement with the Government of Bermuda for a desalination plant to be built in two phases at Tynes Bay along the northern coast of Bermuda. Under the agreement, CW-Bermuda constructed the plant and managed its operations from the second quarter of 2009 through the termination of the agreement on June 30, 2011. Because (i) the equity investment in CW-Bermuda was not sufficient to permit it to finance its activities without the loan from the Company; (ii) the other investors in CW-Bermuda have no obligation to absorb any significant amount of its losses should losses arise; and (iii) the Company expected and received economic benefits from CW-Bermuda that are significantly greater than the Company’s voting rights of 40%, CW-Bermuda constitutes a variable interest entity (“VIE”). The Company is the primary financial beneficiary of CW-Bermuda and accordingly, consolidates the results of CW-Bermuda in its financial statements. The assets and liabilities of CW-Bermuda included in the Company’s consolidated balance sheet amounted to approximately $141,000 and $1,000 respectively, as of December 31, 2011. The Company has not provided any guarantees related to CW-Bermuda and any creditors of the VIE do not have recourse to the general credit of the Company as a result of including CW-Bermuda in the consolidated financial statements. The results of CW-Bermuda are reflected in the Company’s services segment. The Company generated revenues and gross profits from its Bermuda affiliate of approximately $723,000 and $457,000, respectively, for the year ended December 31, 2011 and $1.1 million and $533,000, respectively, for the year ended December 31, 2010. As a result of the termination of the agreement with the Bermuda government, the Company does not expect to receive any future fees or revenues from CW-Bermuda. NSC In May 2010, the Company acquired, through its wholly-owned Netherlands subsidiary, Consolidated Water Cooperatief, U.A., a 50% interest in N.S.C. Agua, S.A. de C.V., (“NSC”) a Mexican company. NSC has been formed to pursue a project encompassing the construction, ownership and operation of a 100 million gallon per day seawater reverse osmosis desalination plant to be located in northern Baja California, Mexico and an accompanying pipeline to deliver water to a Mexican potable water system and the U.S. border. The Company believes such a project can be successful due to what we anticipate will be a growing need for a new potable water supply for the areas of northern Baja California, Mexico and Southern California, United States. To complete this project, the Company has engaged an engineering group with extensive regional experience and have partnered with Doosan Heavy Industries and Construction, a global leader in the engineering, procurement and construction of large seawater desalination plants. Once completed, a subsidiary of the Company would operate the plant while retaining a minority position in its ownership. NSC is in the development stage, and is presently involved in (i) extending contracts for the purchase of land on which to build the plant, (ii) seeking contracts for the electric power and feed water sources for the plant’s proposed operations, and (iii) implementing a water quality monitoring and equipment testing program at the proposed feed water source. In addition to completing these activities, NSC will be required to complete various other steps before it can commence construction of the plant and pipeline including, but not limited to, obtaining approvals and permits from various governmental agencies in Mexico and the United States, securing contracts with its proposed customers to sell water in sufficient quantities and at prices that make the project financially viable, and obtaining equity and debt financing for the project. NSC’s potential customers will also be required to obtain various governmental permits and approvals in order to purchase water from NSC. For its 50% interest in NSC, the Company agreed to provide initial funding of up to $4 million in the form of equity for NSC’s development activities. As of June 30, 2011 the Company had met this initial funding commitment. Because the Company exercises effective financial control over NSC and its partners in NSC did not participate in funding the first $4 million in losses that NSC incurred, the Company consolidates NSC’s results of operations. Included in the consolidated results of operations for the years ended December 31, 2011 and 2010 are approximately $3.0 and $1.7 million respectively in general and administrative expenses from NSC, consisting of organizational, legal, accounting, engineering, consulting and other costs relating to its project development activities. The assets and liabilities of NSC included in the consolidated balance sheet amounted to approximately $27,000 and $336,000 respectively, as of December 31, 2011 and approximately $731,000 and $131,000, respectively, as of December 31, 2010. In February 2012, the Company acquired an option, exercisable through February 7, 2014, to purchase the shares of one of the other shareholders of NSC along with an immediate power of attorney to vote those shares. As a result, the Company now has effective control over NSC and is continuing its project development activities. The Company has determined that completing NSC’s development activities will require significantly more funding than has been expended to date. The Company may choose to fund these development activities itself or may seek funding from additional sources. The Company may incur significant development expenses in the future for this project without ultimately being able to obtain the funding necessary for NSC to build the project. The Company estimates that it will take at least two years for NSC to complete all of the development activities (which include initiating site piloting plant activities, extending purchase agreements for the land for the plant, securing feed water and power supplies, completing the engineering and feasibility studies, negotiating customer contracts, obtaining required regulatory permits and arranging the project financing) necessary to commence construction of the plant. However NSC may ultimately be unable to complete all of the activities necessary to begin construction of the project.

9. Other Affiliates

CW-Bermuda

In June 2006, the Company formed a Bermuda-based affiliate, Consolidated Water (Bermuda) Limited (“CW-Bermuda”) with two other shareholders. The Company owns 40% of the equity interest and voting rights of CW-Bermuda. In January 2007, CW-Bermuda entered into a design, build, sale and operating agreement with the Government of Bermuda for a desalination plant to be built in two phases at Tynes Bay along the northern coast of Bermuda. Under the agreement, CW-Bermuda constructed the plant and managed its operations from the second quarter of 2009 through the termination of the agreement on June 30, 2011.

Because (i) the equity investment in CW-Bermuda was not sufficient to permit it to finance its activities without the loan from the Company; (ii) the other investors in CW-Bermuda have no obligation to absorb any significant amount of its losses should losses arise; and (iii) the Company expected and received economic benefits from CW-Bermuda that are significantly greater than the Company’s voting rights of 40%, CW-Bermuda constitutes a variable interest entity (“VIE”). The Company is the primary financial beneficiary of CW-Bermuda and accordingly, consolidates the results of CW-Bermuda in its financial statements. The assets and liabilities of CW-Bermuda included in the Company’s consolidated balance sheet amounted to approximately $141,000 and $1,000 respectively, as of December 31, 2011. The Company has not provided any guarantees related to CW-Bermuda and any creditors of the VIE do not have recourse to the general credit of the Company as a result of including CW-Bermuda in the consolidated financial statements. The results of CW-Bermuda are reflected in the Company’s services segment. The Company generated revenues and gross profits from its Bermuda affiliate of approximately $723,000 and $457,000, respectively, for the year ended December 31, 2011 and $1.1 million and $533,000, respectively, for the year ended December 31, 2010. As a result of the termination of the agreement with the Bermuda government, the Company does not expect to receive any future fees or revenues from CW-Bermuda.

NSC

In May 2010, the Company acquired, through its wholly-owned Netherlands subsidiary, Consolidated Water Cooperatief, U.A., a 50% interest in N.S.C. Agua, S.A. de C.V., (“NSC”) a Mexican company. NSC has been formed to pursue a project encompassing the construction, ownership and operation of a 100 million gallon per day seawater reverse osmosis desalination plant to be located in northern Baja California, Mexico and an accompanying pipeline to deliver water to a Mexican potable water system and the U.S. border. The Company believes such a project can be successful due to what we anticipate will be a growing need for a new potable water supply for the areas of northern Baja California, Mexico and Southern California, United States. To complete this project, the Company has engaged an engineering group with extensive regional experience and have partnered with Doosan Heavy Industries and Construction, a global leader in the engineering, procurement and construction of large seawater desalination plants. Once completed, a subsidiary of the Company would operate the plant while retaining a minority position in its ownership. NSC is in the development stage, and is presently involved in (i) extending contracts for the purchase of land on which to build the plant, (ii) seeking contracts for the electric power and feed water sources for the plant’s proposed operations, and (iii) implementing a water quality monitoring and equipment testing program at the proposed feed water source. In addition to completing these activities, NSC will be required to complete various other steps before it can commence construction of the plant and pipeline including, but not limited to, obtaining approvals and permits from various governmental agencies in Mexico and the United States, securing contracts with its proposed customers to sell water in sufficient quantities and at prices that make the project financially viable, and obtaining equity and debt financing for the project. NSC’s potential customers will also be required to obtain various governmental permits and approvals in order to purchase water from NSC.

For its 50% interest in NSC, the Company agreed to provide initial funding of up to $4 million in the form of equity for NSC’s development activities. As of June 30, 2011 the Company had met this initial funding commitment. Because the Company exercises effective financial control over NSC and its partners in NSC did not participate in funding the first $4 million in losses that NSC incurred, the Company consolidates NSC’s results of operations. Included in the consolidated results of operations for the years ended December 31, 2011 and 2010 are approximately $3.0 and $1.7 million respectively in general and administrative expenses from NSC, consisting of organizational, legal, accounting, engineering, consulting and other costs relating to its project development activities. The assets and liabilities of NSC included in the consolidated balance sheet amounted to approximately $27,000 and $336,000 respectively, as of December 31, 2011 and approximately $731,000 and $131,000, respectively, as of December 31, 2010.

In February 2012, the Company acquired an option, exercisable through February 7, 2014, to purchase the shares of one of the other shareholders of NSC along with an immediate power of attorney to vote those shares. As a result, the Company now has effective control over NSC and is continuing its project development activities.

The Company has determined that completing NSC’s development activities will require significantly more funding than has been expended to date. The Company may choose to fund these development activities itself or may seek funding from additional sources. The Company may incur significant development expenses in the future for this project without ultimately being able to obtain the funding necessary for NSC to build the project. The Company estimates that it will take at least two years for NSC to complete all of the development activities (which include initiating site piloting plant activities, extending purchase agreements for the land for the plant, securing feed water and power supplies, completing the engineering and feasibility studies, negotiating customer contracts, obtaining required regulatory permits and arranging the project financing) necessary to commence construction of the plant. However NSC may ultimately be unable to complete all of the activities necessary to begin construction of the project.