CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 30,630,910	$ 37,624,179
Restricted cash	0	7,500,000
Marketable securities	8,548,469	8,496,372
Accounts receivable, net	11,871,031	8,537,232
Inventory	1,459,278	1,451,639
Prepaid expenses and other current assets	1,272,799	1,880,105
Current portion of loans receivable	1,831,873	1,843,600
Total current assets	55,614,360	67,333,127
Property, plant and equipment, net	62,046,304	64,185,110
Construction in progress	335,789	141,204
Inventory, non-current	4,055,545	3,861,470
Loans receivable	9,942,279	10,758,873
Investment in OC-BVI	6,342,459	6,634,598
Intangible assets, net	1,634,669	1,501,824
Goodwill	3,587,754	3,587,754
Other assets	2,664,045	2,855,471
Total assets	146,223,204	160,859,431
LIABILITIES AND EQUITY
Accounts payable and other current liabilities	4,075,893	4,617,770
Dividends payable	1,157,987	1,156,081
Current portion of long term debt	1,588,249	17,531,134
Total current liabilities	6,822,129	23,304,985
Long term debt	6,043,996	6,852,660
Other liabilities	416,658	420,430
Total liabilities	13,282,783	30,578,075
Equity
Redeemable preferred stock, $0.60 par value. Authorized 200,000 shares; issued and outstanding 32,278 and 22,427 shares, respectively	19,367	13,456
Additional paid-in capital	82,262,028	81,939,211
Retained earnings	40,141,298	38,030,943
Total Consolidated Water Co. Ltd. stockholders' equity	131,170,391	128,724,827
Non-controlling interests	1,770,030	1,556,529
Total equity	132,940,421	130,281,356
Total liabilities and equity	146,223,204	160,859,431
Class A Common Stock [Member]
Equity
Common stock	8,747,698	8,741,217
Class B Common Stock [Member]
Equity
Common stock	$ 0	$ 0