Study examines the real risk of illness when surfing in rain runoff

Local San Diego surfers recently partook in a health study for a free bar of wax and a free subscription to a surf forecasting site.

According to The San Diego Union-Tribune, the 654 participants surfed at Tourmaline and Ocean Beach to aid in the epidemiological study looking to understand the risks of swimming in compromised water.

RELATED: Scientists study surfers' butts to understand 'superbug' bacteria

The Surfer Health Study was conducted by the University of California Berkeley, the Southern California Coastal Water Research Project and the Surfrider Foundation, and took a three year look to “examine illness rates associated with surfing during wet weather.”

Using a phone app, the surfers logged when they surfed and how often they got sick. The findings determined that the risk of getting sick after rainy conditions is 32 in 1,000. This is an increase from the normal 25 in 1,000 for San Diego beaches.

Chart showing the increase of risk after rain. Chart courtesy of The San Diego Union-Tribune

Chart showing the increase of risk after rain. Chart courtesy of The San Diego Union-Tribune

Rain causes runoff into the ocean, and when surfers are exposed to the bacteria in that runoff it can cause illness. Other illness types that are greatly increased with wet weather are diarrhea, sinus infections, skin rashes, fevers and much more. Just more evidence to not go surfing after rain in San Diego, or any urban areas.

TO READ THE FULL SURFER HEALTH STUDY, HEAD HERE.

The rainbow and puddles are a giveaway to rain. Photo: Courtesy of The Surfer Health Study

The rainbow and puddles are a giveaway to rain. Photo: Courtesy of The Surfer Health Study

More from GrindTV

8 whiskeys for sipping around the campfire

What you should know before building your adventuremobile

Your guide to opening days for ski resorts across the country