CONSOLIDATED STATEMENTS OF INCOME (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Retail water revenues	$ 24,222,895	$ 23,356,338	$ 21,864,252
Bulk water revenues	40,758,182	30,757,874	25,302,093
Services revenues	469,625	1,040,280	3,542,209
Total revenues	65,450,702	55,154,492	50,708,554
Cost of retail revenues	11,548,255	11,496,598	10,361,302
Cost of bulk revenues	31,679,887	24,127,488	20,907,981
Cost of services revenues	230,118	508,339	2,828,776
Total cost of revenues	43,458,260	36,132,425	34,098,059
Gross profit	21,992,442	19,022,067	16,610,495
General and administrative expenses	14,542,817	13,651,650	11,329,648
Impairment losses	521,444	0	0
Income from operations	6,928,181	5,370,417	5,280,847
Other income (expense):
Interest income	835,941	1,200,999	1,375,827
Interest expense	(876,971)	(1,141,744)	(1,584,771)
Profit sharing income from OC-BVI	343,454	0	0
Equity in earnings of OC-BVI	2,121,319	838,652	1,235,146
Other income	272,085	283,656	136,113
Other income, net	2,695,828	1,181,563	1,162,315
Net income	9,624,009	6,551,980	6,443,162
Income attributable to non-controlling interests	308,495	438,762	151,137
Net income attributable to Consolidated Water Co. Ltd. stockholders	$ 9,315,514	$ 6,113,218	$ 6,292,025
Basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders (in dollars per share)	$ 0.64	$ 0.42	$ 0.43
Diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders (in dollars per share)	$ 0.64	$ 0.42	$ 0.43
Dividends declared per common share (in dollars per share)	$ 0.30	$ 0.30	$ 0.30
Weighted average number of common shares used in the determination of:
Basic earnings per share (in shares)	14,578,518	14,560,259	14,547,065
Diluted earnings per share (in shares)	14,606,148	14,596,013	14,597,894