Austin, Texas 65,640,000
Round Rock, Texas 16,996,468
Rochester, N.Y. 9,900,000
Bullis School, Potomac, Md. 3,400,000
The Dalton School, New York City 2,530,000
Greenwich Academy, Greenwich, Conn. 2,336,589
Norwood School, Bethesda, Md. 1,608,300
Hotchkiss School, Lakeville, Conn. 1,550,000
Spirit Lake, Iowa 1,500,855
Kent Place School, Summit, N.J. 1,100,000
Source: U.S. Environmental Protection Agency