Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets
Property, plant and equipment, at cost	$ 4,990,047	$ 4,648,128
Less: accumulated depreciation	1,124,791	1,035,202
Net property, plant and equipment	3,865,256	3,612,926
Current assets:
Cash and cash equivalents	5,047	8,204
Accounts receivable and unbilled revenues, net	99,027	81,056
Deferred income taxes	18,811	37,758
Inventory, materials and supplies	11,674	11,186
Prepayments and other current assets	12,174	10,011
Assets of discontinued operations held for sale	504	172,238
Total current assets	147,237	320,453
Regulatory assets	249,852	242,292
Deferred charges and other assets, net	64,029	56,900
Funds restricted for construction activity	55,089	88,905
Goodwill	38,784	26,944
Total assets	4,420,247	4,348,420
Aqua America stockholders' equity:
Common stock at $.50 par value, authorized 300,000,000 shares, issued 140,323,118 and 139,525,580 in 2012 and 2011	70,161	69,762
Capital in excess of par value	704,328	686,106
Retained earnings	541,739	508,334
Treasury stock, at cost, 759,476 and 710,482 shares in 2012 and 2011	(14,248)	(13,145)
Accumulated other comprehensive income	187	256
Total Aqua America stockholders' equity	1,302,167	1,251,313
Noncontrolling interest	516	504
Total equity	1,302,683	1,251,817
Long-term debt, excluding current portion	1,569,489	1,395,457
Commitments and contingencies (See Note 13)
Current liabilities:
Current portion of long-term debt	44,258	80,429
Loans payable	59,692	107,771
Accounts payable	42,040	68,299
Accrued interest	14,820	14,564
Accrued taxes	20,343	16,209
Other accrued liabilities	26,303	23,522
Liabilities of discontinued operations held for sale	4,860	114,879
Total current liabilities	212,316	425,673
Deferred credits and other liabilities:
Deferred income taxes and investment tax credits	625,423	601,764
Customers' advances for construction	82,783	66,198
Regulatory liabilities	45,679	41,344
Other	119,870	122,038
Total deferred credits and other liabilities	873,755	831,344
Contributions in aid of construction	462,004	444,129
Total liabilities and stockholders' equity	$ 4,420,247	$ 4,348,420