Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 05, 2019
Document and Entity Information
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Registrant Name	Consolidated Water Co. Ltd.
Entity Central Index Key	0000928340
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Trading Symbol	CWCO
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Class A common stock
Entity Interactive Data Current	Yes
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		15,027,574