1.遊泳池水處理如何讓它對遊泳者安全?

Pool water is both physically filtered and chemically treated. Filtration removes solid debris, such as fragments of hair, skin, insects, and plants. Chemical treatment destroys algae and waterborne pathogens (germs that could make swimmers sick) and helps keep pool water comfortable for swimmers. Chemicals used include sanitizers (e.g., chlorine, bromine or ozone) to destroy harmful germs; algaecides to control algae, sanitizer stabilizers, and pH and alkalinity adjusters.For more information, please see “Can Swimming Pools Go Chemical-free?

2. Which type of pool keeps swimmers safer from germs, a chlorine pool or a salt water pool?

You may be surprised to learn that salt water pools are in fact chlorine pools in which chlorine is generated in the pool from sodium chloride salt. The same germ-destroying chemical mechanism that operates in traditionally chlorinated pools operates in salt pools to the great benefit of swimmer safety.

For more information, please see “Facts and Tips for Salt Pool Owners.”

3. Why do swimmers’ eyes sometimes turn red in the pool?

“Swimmer red eye” is often the result of poor swimmer hygiene and not a sign that there is “too much chlorine in the pool.” When nitrogen-containing compounds found in pee, poop, sweat and dirt combine with chlorine, irritants are formed that turn swimmers’ eyes red. Peeing in the pool actually depletes chlorine, which would otherwise be available to help destroy harmful germs.

For more information, please see “Swimming Pool Myths Busted over the Airwaves.”

4. Doesn’t a strong chemical odor around the pool indicate too much chlorine in the water?

You may be surprised to learn that a properly maintained pool has no strong chemical odor. When chlorine in pool water combines with pee, poop, sweat and dirt from swimmers’ bodies, however, smelly irritants called chloramines are produced. (These chloramines are different from the type of chloramine that is sometimes used to treat drinking water.) Yet, according to a survey we conducted in 2016, three-quarters of Americans incorrectly believe the chemical odor they smell at pools is a sign that there’s too much chlorine in the water. Swimmers can use simple test strips (available at pool supply or “big box” stores) that measure pH and “free chlorine” levels to ensure these readings are within an appropriate range.

For more information, please see “Smells Like Chlorine?”

5. Is it alright to pee in the pool?

在遊泳池裏撒尿是個壞主意。當遊泳運動員在遊泳池中撒尿時,小便中的含氮化合物與水中的氯反應形成刺激性,味道含有味道的氯胺,轉動遊泳者的眼睛紅色。疾病控製和預防的中心建議在遊泳池中保持剩餘水平,以便對可以使遊泳者生病的細菌進行持續保護。在遊泳池中撒上含氯,否則可以有助於保護遊泳運動員。

For more information, please see氯在遊泳池的真相.

6. What should I do about bird (and other) droppings in my pool?

According to the US Centers for Disease Control and Prevention (CDC) website, many germs that might be present in bird droppings can infect humans, although few, if any, outbreaks have been associated with bird droppings. Duck and goose droppings are highlighted by CDC as potentially containing E. coli, Salmonella, Campylobacter or Cryptosporidium. Fortunately, in a well-maintained pool most pathogens in bird droppings are killed by chlorine within minutes, according to CDC. Cryptosporidium, a microscopic parasite surrounded by a tough chlorine-resistant outer shell, can be removed by a well-maintained pool filtration system. Nevertheless, CDC recommends pool managers and backyard pool owners treat bird droppings in the pool the same way they would respond to finding formed human feces in the pool, by taking the following steps:

  • Close the pool to swimmers.
  • 穿上一次性手套。
  • Remove the waste material using a net or bucket. Do not vacuum the waste from the pool.
  • Clean off any debris or dirt from the item used to remove the waste.
  • Disinfect the item used to remove the waste by immersing it in the pool during the 30-minute disinfection time described below.
  • Remove and dispose of gloves.
  • Wash your hands thoroughly with soap and water immediately.
  • Raise the free chlorine concentration to, or maintain it at, 2 parts per million (ppm);
  • Maintain the pH level at 7.5 or less; keep the temperature at 77°F (25°C) or higher.
    The free chlorine and pH should remain at these levels for 30 minutes.
  • Confirm that the filtration system is operating properly.

For more information, please seeWhat to do about Bird (and Other) Droppings in the Swimming Pool.

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