This article is the spine of the publication. Everything else refers back to it, because the recurring problem in writing about swimming is that advice gets addressed to whoever is reading rather than to whoever can act.
Two disclaimers first, and they are real. We are not lawyers and this is not legal advice. And we are describing the ordinary structure of responsibility at a UK swimming session, which is the shape most situations take, not a determination of liability in any particular case.
Three parties, three different objects
| Party | Holds | Cannot affect |
|---|---|---|
| Facility operator | The water, the plant, the hall air, the building, its own staffing including lifeguard cover, the structure, the facilities, and the decision to close | What a hirer's group does, whether a swimmer prepared properly |
| Session leader | Who enters the water, what the activity is, the group's supervision, the briefing, the go or no go decision, and the risk assessment for the activity | Water treatment, air quality, the building, the operator's staffing |
| Swimmer or family | Their own preparation, their own conduct, disclosing what the leader needs to know, and the decision to get in or not | Almost everything else |
The most common failure is the assumption that these overlap more than they do. A parent who assumes the swimming teacher can do something about the pool water is mistaken. A session leader who assumes the operator's lifeguard is supervising their group is mistaken and it is a dangerous mistake. An operator who assumes a hirer has assessed the activity is mistaken.
Most incidents at organised swimming are not caused by a party failing its duty. They are caused by two parties each believing the other held it.
Where the duties actually attach
The general framework in Great Britain is not swimming specific. The Health and Safety at Work etc. Act 1974 places duties on employers to ensure, so far as is reasonably practicable, the health and safety of employees and of others affected by their undertaking, and duties on those in control of premises. The Management of Health and Safety at Work Regulations 1999 require a suitable and sufficient assessment of the risks and arrangements to give effect to the necessary measures.
For swimming pools specifically, the Health and Safety Executive publishes Health and Safety Executive, HSG179 Health and safety in swimming pools, which is the guidance operators and hirers are expected to work to. Water treatment practice is guided by the code of practice from Pool Water Treatment Advisory Group. Activity specific guidance for swimming comes from Swim England, and for schools, the HSE's material on school trips and outdoor learning is the relevant starting point.
Beyond the statutory framework there is the ordinary law of negligence, under which anyone who assumes responsibility for others owes them a duty to take reasonable care. That is not something we are competent to explain and it is the reason clubs and schools take their own advice.
The hire agreement is where most confusion lives
When a club, school or group hires a pool, a set of things are either provided by the operator or expected from the hirer, and the division varies between facilities. The items that matter most:
- Lifeguard cover. Provided by the operator, or expected from the hirer, or shared. This is the single most important thing to establish in writing and the single most commonly assumed.
- Poolside supervision of the activity. Distinct from lifeguarding, and almost always the hirer's.
- The normal operating procedure and emergency action plan. The operator's, and the hirer needs to have been told what it is.
- Access to and supervision of changing facilities. Frequently ambiguous.
- Equipment, its condition and its safe use.
- What happens on an alarm, and who does what.
If you run sessions at a hired pool and cannot immediately say whether the lifeguards are yours or theirs, and how many, that is the first thing to fix. Ask, get it in writing, and put it in the risk assessment. It is a five minute task that resolves the most consequential ambiguity in the arrangement.
When the swimmers are children, everything moves
A group of adults each holds a great deal for themselves. A group of children holds almost nothing, and everything they would have held moves to the leader and to the organisation. That includes things that look like personal choices: whether they are warm enough, whether they have been to the toilet, whether they are tired, and whether they have any sun protection on for the outdoor part of the day.
It also introduces safeguarding, which is a distinct obligation with its own framework and its own policies, and it is why apparently simple questions like whether a teacher may apply sunscreen to a child have organisational answers rather than common sense ones. See children in water and reapplying around swimming.
Does the division of responsibility change with the environment?
The three way split holds, and the operator's share is large: water, air, plant, structure, lifeguard cover, and a controlled environment where most variables are already handled.
The leader's job is correspondingly narrower and clearer. Most of the environment has been dealt with.
At an outdoor pool the split is the same but the leader picks up exposure, timing, shade use and hydration, none of which existed indoors.
In open water the operator may not exist at all, and everything the operator would have held either moves to the leader or is simply unheld. That is the defining feature of open water and it is covered in open water groups and supervision.
What a swimmer genuinely holds
It is a short list and it is worth stating, because a publication that told readers they hold nothing would be as wrong as one that told them they hold everything.
- Turning up prepared: showered, with the right kit, having eaten and drunk appropriately.
- Telling the leader what they need to know, including anything about health that affects the session. A leader cannot plan around what they have not been told.
- Their own conduct in the water and around the pool.
- Deciding to get in, and deciding to get out. Nobody should feel unable to leave the water, and a session where people feel unable to is badly run.
- For an adult swimming outdoors, their own exposure decisions within the constraints the venue and the session impose.
- Raising things. A swimmer who notices the hall stinging or the water looking wrong and says nothing has withheld information that only they have.
The overall safety of an organised swimming session
Owns preparation, disclosure, conduct, and the decision to enter and leave the water. Owns raising what they observe. Owns nothing about the environment and should not be expected to assess it.
Owns the activity: who swims, what they do, supervision arrangements, the briefing, head counts, the risk assessment, the decision to run or stop, and the escalation of anything observed. Owns knowing what the hire agreement says rather than assuming.
Owns the environment: water treatment, hall air, plant, structure, facilities, its own staffing and lifeguard provision, the normal operating procedure and emergency action plan, and the decision to close. Owns telling hirers accurately what is included.
Where a duty attachesThe Health and Safety at Work etc. Act 1974 and the Management of Health and Safety at Work Regulations 1999 as the general framework, with Health and Safety Executive, HSG179 Health and safety in swimming pools as the pool specific guidance, Pool Water Treatment Advisory Group for water treatment, Swim England for swimming activity and HSE guidance for schools.
The question that resolves most of it
For any decision at a swimming session, ask: who is able to change this. Not who should, not whose fault it would be, but who has the ability. Water chemistry, the operator. Session timing, the person with the booking. Whether a child has a hat, the family and the leader between them. Whether there is shade, the operator, years ago. Whether somebody gets out when they are cold, the swimmer, if the session has made that possible.
Advice addressed to somebody who cannot change the thing is not advice. It is noise, and worse, it transfers a sense of responsibility to a person who could not have acted on it. That is why every article on this site carries the block that splits the decision.