Every summer in Canada, hundreds of families experience the unthinkable. Drowning is the second leading cause of unintentional injury death among children aged one to four, and it happens with terrifying speed and silence. Unlike what movies depict, a child who is drowning rarely splashes or calls for help — they slip under the water quietly, often within arm’s reach of an adult who simply looked away for a moment.

The good news: drowning is almost entirely preventable. This guide covers the layered approach to water safety that every parent needs — from supervision strategies to physical barriers, swim readiness, and what to do if the worst happens.

The Layers of Drowning Prevention

No single precaution is enough. Effective water safety uses multiple overlapping layers so that if one fails, others still protect your child. Think of it as a series of safety nets, not a single solution.

Layer 1: Active, Constant Supervision

This is the most important layer and the one that fails most often. Active supervision means an adult is within arm’s reach of the child, watching the water — not reading, not scrolling a phone, not chatting at the edge of the pool. Designate a specific “water watcher” who has no other responsibilities during their shift. If there are multiple adults present, assign rotating 15-minute shifts so the designated watcher never assumes someone else is paying attention.

Layer 2: Physical Barriers

If you have a backyard pool, a four-sided isolation fence with a self-closing, self-latching gate is the single most effective physical measure you can install. The fence should be at least 1.2 metres (4 feet) high and should not have horizontal rails that a child could climb. The gate should open away from the pool and the latch should be out of a child’s reach.

Pool covers, alarms, and locks add additional protection, but they are supplements to a proper fence — not substitutes. Remove ladders from above-ground pools when not in use. If your home has a door that opens directly to the pool area, install a door alarm or a lock that is above a child’s reach.

Layer 3: Swim Readiness and Water Skills

The Canadian Paediatric Society notes that children are generally not developmentally ready for formal swim lessons until around age four. Before that age, parent-and-child water familiarisation classes can build comfort but should never be considered a substitute for supervision. Even children who can swim should always be supervised — fatigue, cold water, and unexpected currents affect experienced swimmers too.

Layer 4: Personal Flotation Devices (PFDs)

Any time your child is on a boat, dock, or near open water, they should wear a Transport Canada-approved personal flotation device (PFD) that fits properly. Water wings, inflatable rings, and pool noodles are toys — they are not safety devices and should never be relied upon to keep a child afloat. A proper PFD should be snug enough that it cannot be pulled over the child’s head.

Danger Zones: Where Drowning Actually Happens

Most parents associate drowning risk with swimming pools, but children under five are just as likely to drown in bathtubs, buckets, ponds, and even large puddles. Any body of water deeper than a few centimetres is a risk for a toddler who falls face-first.

Bathtubs

Never leave a child under five alone in a bathtub — not even for a few seconds to grab a towel or answer the phone. Bath seats and rings can tip over and actually increase drowning risk by giving parents a false sense of security. If the phone rings or someone knocks on the door, wrap your child in a towel and take them with you.

Backyard Pools and Hot Tubs

Residential pools account for a large proportion of child drowning deaths. Keep the pool area fenced (four-sided, self-latching), store pool chemicals locked away, and keep rescue equipment — a reaching pole and a life ring — at the pool at all times. Hot tubs should have a lockable hard cover that can support a child’s weight.

Open Water — Lakes, Rivers, Beaches

Open water is more unpredictable than pools. Currents, sudden drop-offs, cold water shock, and murky visibility all add risk. Swim only in designated, supervised areas. Never let children swim alone or in areas without lifeguards. Cold Canadian lake water can cause muscle cramping and hypothermia surprisingly fast — even in summer.

Recognising the Signs of Drowning

Real drowning looks nothing like what you see on television. A drowning person rarely waves or calls for help. Instead, watch for these signs:

• Head tilted back with mouth at water level — the body is vertical with little or no leg movement
• Eyes glassy, unfocused, or closed — they cannot make eye contact or respond to calls
• Quiet — no splashing, no screaming; the body is using all available energy to try to breathe
• Hair over forehead or eyes — they cannot push it away because their arms are pressing down on the water surface
• Hyperventilating or gasping — mouth opens and closes rapidly at the surface

What to Do in a Water Emergency

If a child is in trouble in water, follow this sequence:

1. Reach — extend a pole, towel, or your arm from the edge. Do not enter the water if you can avoid it.
2. Throw — toss a life ring, PFD, or any buoyant object to the child.
3. Row — if a boat or paddleboard is nearby, use it to reach the child.
4. Go — enter the water as a last resort, and only if you are a strong swimmer with rescue training. A panicking victim can pull a rescuer underwater.

Once the child is out of the water and is unresponsive, begin CPR immediately. If you are trained, give 30 chest compressions followed by 2 rescue breaths. If you are not trained, hands-only CPR (continuous chest compressions) is still far better than doing nothing. Continue until paramedics arrive.

Your Summer Water Safety Checklist