Last year's wet summer could damage Dorset's beach tourism after clean water standards dropped significantly.
Beaches in Dorset have missed out on the 2013 Good Beach Guide after failing water quality tests.
Kimmeridge Bay failed tests set by the Marine Conservation Society (MCS), along with Lyme Regis Church Cliff Beach and Charmouth West.
The MCS has urged swimmers to take care at beaches across the UK with the wet summer last year leading to an increase in sewage in the sea.
MCS Coastal Pollution Officer Rachel Wyatt said: "In England, the north west and south west were hit particularly hard, with the fewest number of recommended beaches for at least a decade.
"Action must be taken now. With stricter bathing water standards from 2015 and summers that appear to be getting wetter, the iconic image of people bathing off golden beaches could be at serious risk."
The majority of Dorset beaches did pass quality tests, while some including West Bay, Lulworth Cove and Highcliffe met the minimum standard.