v2.4.0.6
Document And Entity Information
9 Months Ended
Sep. 30, 2012
Oct. 24, 2012
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2012  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q3  
Entity Registrant Name AQUA AMERICA INC  
Entity Central Index Key 0000078128  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   139,941,476