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Document And Entity Information - shares
 9 Months Ended
Sep. 30, 2015
Nov. 05, 2015
Document Information [Line Items]    
Entity Registrant Name CONSOLIDATED WATER CO LTD  
Entity Central Index Key 0000928340  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Trading Symbol CWCO  
Entity Common Stock, Shares Outstanding   14,750,800
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2015  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2015