America's cleanest (and dirtiest!) beaches

-- New Hampshire: Wallis Sands Beach in Rockingham County

-- Texas: South Padre Island in Cameron County

The report also noted the top 15 "Repeat Offenders" - beaches that continually have high bacteria counts. These beaches over the last five years have had persistent contamination problems, with water samples violating public health standards more than 25 percent of the time for each year from 2007 to 2011.

Those beaches are:

-- California: Avalon Beach in Los Angeles County (3 of 5 monitored sections):

-- Avalon Beach -- West of Green Pleasure Pier (50 feet)

-- Avalon Beach -- West of Green Pleasure Pier (100 feet)

-- Avalon Beach -- East of Green Pleasure Pier

-- California: Doheny State Beach in Orange County (3 of 6 monitored sections):

-- Doheny State Beach -- North of San Juan Creek

-- Doheny State Beach -- Surfzone at Outfall

-- Doheny State Beach -- 1000' South Outfall

-- Illinois: Winnetka Elder Park Beach in Cook County

-- Illinois: North Point Marina North Beach in Lake County

-- Louisiana: Constance Beach in Cameron Parish