The water quality at Bridlington South Beach has been rated "sufficient" for the first time in three years.
People were advised to not swim in the sea at the beach when it was rated "poor" for the past three years due to high levels of bacteria.
The water quality at all of East Yorkshire's beaches is now classified as "sufficient" or higher after the Environment Agency took samples from bathing waters this summer.
All beaches on the Lincolnshire coast are rated "excellent" or "good".