On a sizzling summer day, there’s nothing better than taking a refreshing dip in a swimming pool. But that private oasis in your backyard can be a big safety hazard for kids.

More than 3,700 people drowned in the United States in 2016, the National Safety Council (NSC) reports. Drowning deaths are particularly prevalent among babies and toddlers. Drowning was the leading cause of preventable death for 1- to 4-year-olds in 2016.

Here are precautions you can take to protect your children while still letting them have fun in the pool this summer.

Becky Turpin, director of home and community safety at the NSC, says the best safety measure homeowners can take is to install a fence around their pool. This forms a barrier that will keep kids out of the water when you’re not outside to supervise them. Fence gates should open outward, away from the pool area, and be self-closing and self-latching, Turpin says.

Although there’s no federal pool-fence law, a number of cities and states have enacted their own laws that spell out fence requirements, such as minimum fence height and other specifications. For example, in Montgomery County, any private swimming pool that’s more than 18 inches deep must be enclosed by a fence or wall that’s at least five feet high. But Mark Montegani, owner of Pool Heaven in Huntington Beach, Calif., recommends a fence of six feet or higher. “There is always potential for a child to move objects and climb over the fence, so I say the taller, the better,” Montegani says.

Have an aboveground pool? Enclose the steps or ladder to the pool with a fence.

Want to add an extra layer of protection to keep kids out of the water when you’re not around? Install alarms that alert you when gates to the pool are opened. Also, consider buying an underwater swimming pool alarm system such as the Pool Patrol Model PA-30 ($234.95 on Amazon), which uses motion sensors to detect wave activity and alert you when anyone jumps or falls into the pool.

Pool alarm systems are so effective that some states, such as Tennessee, require homeowners to install them when building a pool.

“Diving boards are huge culprits for pool injuries,” Montegani warns. “Even if you know how to dive, you can easily slip off the board and hit your head.” Consequently, Montegani advises homeowners to remove diving boards from their pools. Swimming pool slides are also safety hazards to consider taking down.

Make sure you have a life ring, rescue tube or life hook (also called a shepherd’s hook) that you can use to pull someone from the water to safety. This rescue equipment should be stored near the pool in a clearly marked and accessible area, and periodically checked to make sure it’s in good condition, according to the Association of Pool & Spa Professionals. You’ll also want to have a first aid kit on hand that’s stocked with all essentials.

Kids (and adults) can trip on objects and fall into the water if these items are left near the edge of the pool. Make sure floats, tubes, toys and cleaning equipment are stored away from the water when they’re not in use.

Pool chemicals help protect swimmers by killing disease-causing germs in the water, but they can also lead to injury when mixed­ improperly or not handled using protective gear, according to the Centers for Disease Control and Prevention. That’s why Montegani says pool chemicals should always be stored out of reach in a locked, well-ventilated area.

Drain covers can be death traps — literally. After a 7-year-old girl drowned because of the suction pressure from an underwater drain in a hot tub, Congress passed the Virginia Graeme Baker Pool and Spa Safety Act in 2007 to provide basic safety standards for the nation’s public pools. Although the law doesn’t apply to residential pools, your drain covers “should be rounded covers, and there should be no cracks or missing screws,” Turpin says.

Adults who have private swimming pools should be trained in CPR, Turpin says. A number of organizations such as the American Red Cross, fire departments and hospitals offer CPR certification courses. (Note: There are CPR classes online, but you’ll want to take a course in person to learn how to properly administer this lifesaving procedure.)

Educate your loved ones on what pool conduct is and is not acceptable. You might even create a list of “official” pool rules that includes these basic instructions:

●Don’t run on the pool deck

●Don’t dive into shallow water

●Don’t push anyone into the pool

●Don’t swim without an adult present

●Don’t dunk or hold anyone ­underwater

“It’s never too early or too late to learn how to swim,” Turpin says. Many swimming classes are offered year-round. (Private lessons are worth the investment if your kid has trouble learning how to swim.) “Knowing how to swim doesn’t make someone drown-proof,” Turpin says, “but it’s an important skill that helps keep you safe when you’re in the water.”