Key takeaways

  • Alcohol impairs balance, coordination and judgment, and makes people take more risks. In water, each of those can be deadly.
  • Among teens and adults, CDC says alcohol is involved in up to 70% of deaths linked to water recreation, such as boating or swimming.
  • Skip alcohol before and during swimming or boating. Have your drink after everyone is out of the water.
  • The adult watching the children must be completely sober. CDC says: do not drink alcohol while supervising children.

Alcohol and water don't mix. Among teens and adults, alcohol is involved in up to 70% of deaths linked to water recreation, according to CDC, so skip drinks while you swim, boat or watch children, and make sure the adult on Water Watcher duty is completely sober.

Drinking by the water is part of many summer traditions: the barbecue by the lake, the boat day, the beach picnic, the holiday pool party. You don't have to give up the gathering. You only have to keep the drinks and the water apart.

Up to 70%

of deaths linked to water recreation among teens and adults involve alcohol, according to CDC (2024).Source: cdc.gov (opens in a new tab)

How alcohol affects you in water

CDC explains that alcohol impairs balance, coordination and judgment, and it increases risk-taking behavior (opens in a new tab). In water, each of those matters:

  • Balance. Slips on a dock, a boat or wet rocks become more likely.
  • Coordination. Swimming, treading water and climbing out all get harder.
  • Judgment. The far shore seems closer. The cold water seems fine. The jump seems safe.
  • Risk-taking. People swim farther, dive from higher and stay in longer.

The U.S. Army Corps of Engineers adds one more effect: alcohol induces an inner ear condition that can cause disorientation when underwater (opens in a new tab). A swimmer who goes under may not know which way is up.

Diving is a special risk. Shepherd Center, a spinal cord injury hospital, advises: avoid alcohol while swimming or diving. It impairs judgment and increases the risk of injury (opens in a new tab). See jumping and diving safety.

What the numbers say

Different studies measure alcohol's role in different ways. Here is what each source found, and what it measured:

Source What it measured Finding
CDC (2024) Deaths linked to water recreation, teens and adults Alcohol involved in up to 70% (opens in a new tab)
CDC (2024) Emergency department visits for drowning, teens and adults Alcohol involved in nearly 1 in 4 (opens in a new tab)
CDC MMWR (2024) Share of drowning deaths attributable to alcohol, from a meta-analysis 31% (opens in a new tab)
CDC MMWR (2024) People aged 15-34 who report drinking around water 25% to 61% (opens in a new tab)
U.S. Coast Guard (2024) Fatal boating incidents Alcohol was the leading known contributing factor (opens in a new tab), listed as the leading factor in 20% of deaths

The numbers differ because they count different things. They all point the same way.

Supervisors need to stay sober

This is the part people forget: the adult watching the children needs to be sober too.

CDC says it directly: do not drink alcohol while supervising children (opens in a new tab). CDC also says adults watching children should avoid distracting activities like reading, using the phone and consuming alcohol or drugs, because drowning happens quickly and quietly (opens in a new tab). The American Red Cross adds: supervise others sober and without distractions (opens in a new tab).

Parties, picnics and holidays

Busy gatherings are when supervision slips. Many adults, many children, and everyone assumes someone else is watching.

A plan that works:

For hosting at home, see how to host a safe pool party. For how supervision works, see how to supervise kids around water.

Boats and alcohol

Alcohol on a boat is especially risky. The operator needs clear judgment, and a fall overboard from a moving boat can happen in an instant. CDC says alcohol is involved in about 1 in 5 reported boating deaths (opens in a new tab) among teens and adults. Read more in boating under the influence.

Teens and young adults

The CDC MMWR report found that between 25% and 61% of people aged 15 to 34 report drinking alcohol around water (opens in a new tab). Talk with teens and college students about it before summer, not at the lake. Make it easy for them to say no to a swim, a dive or a boat ride when friends have been drinking. See water safety for college students and young adults.

If someone is in trouble

Emergency

Call 911. Then reach or throw something that floats from the shore, dock or boat. Don't go in after them, especially if you have been drinking.

See reach or throw, don't go.

What you can do today

Common questions

Is it dangerous to swim after drinking?

Yes. CDC says alcohol impairs balance, coordination and judgment and increases risk-taking. Among teens and adults, alcohol is involved in up to 70% of deaths associated with water recreation, nearly 1 in 4 emergency department visits for drowning, and about 1 in 5 reported boating deaths. CDC advises avoiding alcohol before or during swimming, boating or other water activities.

How long after drinking can I swim?

There's no safe number we can give you, and CDC doesn't give one either. Its advice is to avoid alcohol before or during swimming and boating. The simplest plan is to save drinks for after everyone is out of the water for the day.

Can I have a drink while watching my kids swim?

No. CDC says plainly: do not drink alcohol while supervising children. The American Red Cross says to supervise others sober and without distractions. If you want a drink at a party, hand the Water Watcher card to an adult who isn't drinking first.

Why does alcohol make drowning more likely?

CDC says alcohol impairs balance, coordination and judgment, and increases risk-taking. That makes slips, falls from boats and docks, and risky swims more likely. The U.S. Army Corps of Engineers adds that alcohol can affect the inner ear and cause disorientation underwater.

Sources

  1. Risk Factors for Drowning (opens in a new tab) CDC, 2024
  2. Preventing Drowning (opens in a new tab) CDC, 2025
  3. Vital Signs: Drowning Death Rates, Self-Reported Swimming Skill, Swimming Lesson Participation, and Recreational Water Exposure (MMWR 2024;73(20)) (opens in a new tab) CDC (MMWR), 2024
  4. Recreational Boating Statistics 2024 (opens in a new tab) U.S. Coast Guard, 2024
  5. Swimming Safely in Lakes, Rivers & Streams (opens in a new tab) American Red Cross
  6. As temps rise, officials implore recreators wear simple life-saving device (opens in a new tab) U.S. Army Corps of Engineers (via DVIDS), 2025
  7. Swim Lessons for Children: When to Start & What to Consider (opens in a new tab) American Academy of Pediatrics (HealthyChildren.org), 2026
  8. The only safe dive is the one you never take (Diving injury prevention) (opens in a new tab) Shepherd Center

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