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Segment information (Details) - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Segment Reporting Information [Line Items]      
Revenues $ 15,677,106 $ 14,034,772  
Cost of revenues 8,843,538 7,857,741  
Gross profit (loss) 6,833,568 6,177,031  
General and administrative expenses 4,797,192 4,460,986  
Income (loss) from operations 2,036,376 1,716,045  
Other income, net 403,379 389,557  
Income before income taxes 2,439,755 2,105,602  
Provision for (benefit from) income taxes (139,697) (73,269)  
Net income 2,579,452 2,178,871  
Income (Loss) attributable to non-controlling interests (51,776) 124,230  
Net income attributable to Consolidated Water Co. Ltd. stockholders 2,631,228 2,054,641  
Accounts receivable, net 22,614,301   $ 16,500,798
Property plant and equipment, net 52,077,467   53,084,105
Construction in progress 2,383,813   885,494
Intangibles, net 4,820,078   5,195,476
Goodwill 9,784,248   9,784,248
Land held for development 20,558,424   20,558,424
Total assets 167,183,123   163,604,528
Retail [Member]      
Segment Reporting Information [Line Items]      
Revenues 6,476,604 5,970,238  
Cost of revenues 2,684,286 2,629,674  
Gross profit (loss) 3,792,318 3,340,564  
General and administrative expenses 3,012,860 2,897,861  
Income (loss) from operations 779,458 442,703  
Accounts receivable, net 2,481,075   2,646,628
Property plant and equipment, net 24,528,063   24,890,031
Construction in progress 153,740   134,392
Intangibles, net 0   0
Goodwill 1,170,511   1,170,511
Land held for development 0   0
Total assets 54,104,920   54,303,011
Bulk [Member]      
Segment Reporting Information [Line Items]      
Revenues 7,690,402 7,265,293  
Cost of revenues 5,015,789 4,610,324  
Gross profit (loss) 2,674,613 2,654,969  
General and administrative expenses 301,076 435,896  
Income (loss) from operations 2,373,537 2,219,073  
Accounts receivable, net 16,977,316   12,692,714
Property plant and equipment, net 25,424,192   26,124,724
Construction in progress 2,221,068   743,296
Intangibles, net 583,411   599,960
Goodwill 2,328,526   2,328,526
Land held for development 0   0
Total assets 70,559,269   68,663,628
Services [Member]      
Segment Reporting Information [Line Items]      
Revenues 130,252 180,712  
Cost of revenues 102,166 197,275  
Gross profit (loss) 28,086 (16,563)  
General and administrative expenses 743,406 806,574  
Income (loss) from operations (715,320) (823,137)  
Accounts receivable, net 776,733   629,930
Property plant and equipment, net 110,282   91,030
Construction in progress 1,105   0
Intangibles, net 0   15,516
Goodwill 0   0
Land held for development 20,558,424   20,558,424
Total assets 25,462,905   33,594,855
Manufacturing [Member]      
Segment Reporting Information [Line Items]      
Revenues 1,379,848 618,529  
Cost of revenues 1,041,297 420,468  
Gross profit (loss) 338,551    
General and administrative expenses 739,850 198,061  
Income (loss) from operations (401,299) 320,655  
Other income, net   $ (122,594)  
Accounts receivable, net 2,379,177   531,526
Property plant and equipment, net 2,014,930   1,978,320
Construction in progress 7,900   7,806
Intangibles, net 4,236,667   4,580,000
Goodwill 6,285,211   6,285,211
Land held for development 0   0
Total assets $ 17,056,029   $ 7,043,034