Pool Safety for Exercise and Therapy: Supervision, Depth, Lifts and Entry

Urgent Guidance First

In the US, call 911 right away if someone is in difficulty in the water, has been under the water, or is unresponsive. Do not leave a child in or near water without an adult actively watching. This page is for understanding risk, not rescue training; take a first aid and CPR course from a recognised provider. If you are unwell, dizzy or have chest pain in or after a pool session, get out with help and see the warning signs checklist.

Why Pools Need Rules

The World Health Organization defines drowning as the process of experiencing respiratory impairment from submersion or immersion in liquid. [1] It says the risk of drowning increases when children interact with water outside of active adult supervision. [1] It names fencing swimming pools and otherwise controlling access to water hazards as measures that greatly reduce exposure and risk. [1] It also links higher male drowning rates to riskier behaviour such as swimming alone and drinking alcohol before swimming alone. [1] See drowning risk in baths, hot tubs and cold water.

What Pool Rules Are Based On

We did not find one worldwide rulebook for therapy pools. The sources below are examples from one UK council and one US state, and they apply to those places or to schools.

Southampton City Council (UK) published a 2021 advice note for schools with swimming and therapy pools. It says the law does not prescribe what control measures are reasonably practicable in every case, so operators must judge based on particular risks. [2] It lists hazards that have been factors in past deaths or serious injuries, including inadequate supervision, prior health problems such as epilepsy, alcohol or food before swimming, diving into insufficient depth of water, and unclear pool water that prevents casualties from being seen. [2]

Supervision

Southampton's note strongly recommends constant poolside supervision when a pool meets criteria such as water deeper than 1.5 m or abrupt changes in depth. [2] Where a risk assessment says constant supervision is not needed, it recommends signs showing water depth, an alarm to summon help with a notice on its use, and clearly identifiable rescue equipment such as poles, throwing ropes and buoyancy aids. [2]

New York State's public pool rule is a US example. It says supervisory staff shall be at pool side providing direct supervision of pool patrons, with exceptions for the lowest supervision level and spa pools. [3] It says the operator is responsible for verifying supervisory staff qualifications, and that facilities used mainly by people with developmental disabilities may be given increased staffing. [3] Rules in your state or country will differ. We did not read other jurisdictions.

Depth, Diving and Water Clarity

Southampton's note names diving into insufficient depth (leading to concussion or head or spine injury) as a past cause of serious injury. [2] Shallow-water exercise classes still sit beside deeper areas, so know where the depth changes. Look for depth signs, and ask the instructor where deep areas begin. If the water is cloudy and you cannot see the bottom or other swimmers' feet, tell staff. The note lists unclear water as a hazard because it prevents casualties from being seen. [2]

Getting In and Out, and Lifts

Entry and exit are when falls and fainting happen. See getting in and out of water safely and accessible bathing. Proper evidence not found for standards on pool lifts, ramps and hoists in the sources we could read (searched: WHO, the UK council note, New York rule, PubMed, 2026-10-22). Ask the facility who is trained to operate its lift or hoist and whether it was inspected.

Health Conditions and Drowning Risk

A medical condition can raise risk in water. The UK note lists epilepsy and impaired hearing or sight among prior health problems. [2] The NHS advice for people with epilepsy is to think about safety when swimming or doing sports, and to have showers instead of baths if you can. [4] See epilepsy, seizures and water safety. Also check with a clinician first if you have a heart condition, high or low blood pressure, diabetes or reduced skin sensation, are pregnant, or take medicines such as diuretics or sedatives; see preparing for hydrotherapy. Do not combine alcohol, sedatives or cannabis with pool exercise. Never exercise in water alone if you could faint, have a seizure or lose balance.

Food, Alcohol and Breath-Holding

The UK note lists alcohol or food before swimming among past risk factors. [2] Do not practise breath-holding or fast over-breathing in or near a pool; see shallow water blackout.

Hygiene

The UK note lists Legionella, water quality and first aid equipment among issues an operator must address. [2] We give no chemical instructions. Warm therapy pools need good upkeep; see hydrotherapy safety.

Questions to Ask Before a Class or Therapy Session

• Who watches the water during my session, and are they qualified? (Operators in the NY example must verify supervisory staff qualifications. [3])
• Where are the deep areas, and how are they marked?
• What is the plan for an emergency, where is the alarm, and where is the rescue equipment?
• How do I get in and out, and is there help available?
• How warm is the water for my condition, and who decides?
• What do I tell staff about my health and medicines?

For choosing a provider see how to check a pool, spa or clinic and water aerobics and aquatic exercise classes.