As temperatures begin to rise with summer just around the corner, Santa Clarita residents should know important water safety precautions before jumping into the water, according to officials from the CDC.

The Centers for Disease Control and Prevention, often called the CDC, is focusing on healthy and safe swimming week, from May 21 through 27, as a chance to remind swimmers, parents of young swimmers, pool operators and beach managers that simple steps can be taken to ensure healthy and safe swimming experiences.

This year’s theme is “Swim Healthy. Stay Healthy,” and highlights the roles that swimmers, parents of young swimmers, aquatics and beach staff, residential pool owners and public health officials play in preventing outbreaks of illnesses, drowning and pool chemical injuries, according to the CDC.

One of every three recreational waterborne disease outbreaks from 2000 through 2014 occurred in hotel pools or hot tubs, according to a CDC report. Cryptosporidium (also known as “Crypto”), pseudomonas and legionella caused most of the outbreaks in swimming venues in the United States during this time period.

Crypto is a parasite tough enough to survive even in properly maintained pools. Pseudomonas and legionella are bacteria that can survive disinfectants in slimy areas of hot tubs, pools and water playgrounds.

Crypto causes 58 percent of outbreaks where a germ was identified in pools, hot tubs and water playgrounds. Officials believe the bug is responsible for 89 percent of the illnesses reported.

Crypto spreads in pools when someone is sick with diarrhea in the water and other swimmers swallow that contaminated water.

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“Swallowing just a mouthful of water with Crypto in it can make otherwise healthy kids and adults sick for weeks with watery diarrhea, stomach cramps, nausea and vomiting,” said Michele Hlavsa, chief of the CDC’s Healthy Swimming Program. “Chlorine cannot kill Crypto quickly. We need to keep it out of the water in the first place. Don’t go into the water, and don’t let your kids go into the water if sick with diarrhea.”

The bacteria legionella and pseudomonas are the next leading causes of these outbreaks, with 16 percent of outbreaks caused by legionella and 13 percent caused by pseudomonas, according to the CDC.

Legionella can cause severe pneumonia and symptoms similar to the flu. Pseudomonas can cause hot tub rash and swimmer’s ear.

Some swimmers are more likely to get sick from Legionella, including people 50 years or older, current or former smokers, people with chronic lung disease and people with a weakened immune system.

The 493 outbreaks reported during the 14-year-period analyzed resulted in at least 27,219 illnesses and eight deaths, according to the CDC.

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