A gym with a pool is two operations running at once. On the floor, members are loading plates and clipping into cables, and any frayed cable or loose pin is a hazard waiting for the busiest hour. In the plant room, the pool water has to be tested and balanced before anyone gets in, and the readings have to be logged. A gym health and safety checklist brings both sides into one routine, so the duty manager opening up knows exactly what to check and in what order.
This is the operational spine of a safe leisure site. It covers the pool plant water test log, the daily equipment safety check, equipment disinfection and the cleaning routine. It is here to keep members safe and to give you a clean record when an inspector, an insurer or a parent asks how the water was on a given morning. Below is what good practice looks like, the full checklist, and where the law sits.
What good looks like
Good leisure sites run two non-negotiable habits. They test the pool water on a schedule and write down the numbers, and they walk the gym floor every day looking for the small faults that become injuries. Neither is glamorous. Both are what separate a well-run site from a claim.
On the pool side, the tell is a complete test log with no gaps. Free chlorine and pH checked manually at opening and at intervals through the day, not just trusted to the automatic dosing system. A spike or a drop spotted early and corrected. The plant room tidy, with chemicals stored apart and labelled. On the gym side, the tell is that broken kit is tagged out of use the moment it is found, not left with an apologetic sticky note for a fortnight. Cables, pins, pulleys, treadmill belts and emergency stops all checked. Free weights racked, not scattered as trip hazards.
The common failure points are well known. The pool test is skipped on a quiet shift and the log is back-filled later from memory. Combined chlorine creeps up because nobody is watching it, the air gets that heavy chemical smell, and swimmers’ eyes sting. A treadmill safety key goes missing and the machine stays in service. Disinfectant spray bottles run empty and members wipe down with nothing. The plant room becomes the place everything gets dumped.
An inspector or your insurer looks for a few clear things. A complete, contemporaneous pool water test log. Evidence that faulty equipment is removed from use. A normal operating procedure and an emergency action plan for the pool that staff actually know. Trained staff on the poolside. And cleaning records that match the footfall. The site that does well is the one where the logbook is filled in as the readings are taken, because the routine is real.
Pool plant water test log
Test manually, record immediately. Do not rely on the automatic system alone.
- Test at opening, before the first swimmer, and at the intervals your pool’s risk assessment sets through the day.
- Record free chlorine. Keep it in the 1 to 3 mg/l band the standards set, typically toward the lower end for indoor pools.
- Record pH. Hold it between 7.2 and 7.8. This is what makes the chlorine work and keeps the water comfortable.
- Record combined chlorine. Keep it no higher than 1 mg/l. A rising figure means the water needs attention.
- Record water temperature and water clarity. You should see the bottom and the markings clearly.
- Log the time, the readings and the initials of whoever tested. Note any dosing or backwash action taken.
- If a reading is out of range, act before admitting swimmers. Close the pool if you cannot bring it back.
Daily equipment safety check
Walk the floor before opening.
- Inspect cable machines. Check cables for fraying, pins seat properly, pulleys run smoothly.
- Check free weights and benches. Pads secure, no cracks, dumbbells and plates racked correctly.
- Check cardio kit. Treadmill belts aligned and not slipping, safety keys present, emergency stops working.
- Test emergency stops on every machine that has one.
- Check floor surfaces for tears, lifted matting and trip hazards.
- Confirm mirrors and any glass are intact, with no cracks at member height.
- Tag any faulty equipment out of use immediately and log the fault.
Equipment disinfection
- Refill all member wipe stations and spray bottles at opening and check them through the day.
- Disinfect high-contact surfaces. Handles, grips, benches, mats and machine touchpoints.
- Wipe down studio equipment after each class. Mats, weights, steps and bikes.
- Clean and disinfect the changing rooms, lockers and showers on a scheduled rota.
- Disinfect the poolside, handrails and the changing village to the same standard as the gym.
Cleaning
- Clean and disinfect changing rooms, toilets and showers at opening and on a through-day rota matched to footfall.
- Mop the poolside and wet areas. Standing water and slip hazards dealt with promptly.
- Clean the gym floor, mirrors and glass.
- Empty bins across the site and restock soap, paper and sanitiser.
- Keep the plant room clean, chemicals stored correctly and apart, spill kit in place.
- Log deep cleans so you can show the cycle, not just the daily wipe.
The law, simply
Swimming pool water is managed against the standards set by the Pool Water Treatment Advisory Group (PWTAG) and the HSE guidance document HSG179, “Health and safety in swimming pools”. These are the recognised standards an inspector and your insurer will measure you against.
The numbers operators need to know are the water chemistry targets. Free chlorine between 1 and 3 mg/l. pH between 7.2 and 7.8. Combined chlorine no more than 1 mg/l. These keep the water safe to swim in and comfortable to be around. You test for them manually and log the results, because the automatic system can fail quietly and the log is your evidence that you were watching.
Across the whole site, the Health and Safety at Work Act puts a general duty on you to keep members and staff safe so far as is reasonably practicable. In plain terms, find the hazards, control them, train your team, and keep records. You can read HSG179 on the HSE website and the water standards on the PWTAG site. Nothing here replaces them, and your pool’s own normal operating procedure and emergency action plan always come first. The checklist makes the daily side easy to run.
Questions operators ask
How often do I need to test the pool water? Test manually at opening before anyone swims, and then at the intervals your pool’s risk assessment and normal operating procedure set, often every couple of hours during opening. Busy periods and warmer water need more frequent checks. The automatic dosing system supports this, it does not replace the manual test and log.
What does rising combined chlorine actually mean? Combined chlorine is the spent chlorine that has reacted with sweat, oils and other matter swimmers bring in. It is what causes the strong smell and stinging eyes people wrongly blame on too much chlorine. Keep it below 1 mg/l by dilution with fresh water and good backwashing. A rising figure is a signal to act.
Do I need a qualified pool plant operator? You need someone competent to operate the plant and manage the water safely, and recognised training such as a pool plant operator course is the standard way to show it. Your team should also be trained on the emergency action plan and, where you provide supervision, hold the appropriate lifeguard qualification.
What do I do with a broken machine during opening hours? Tag it out of use straight away, make it physically unusable if you can, and log the fault and the date. Do not leave faulty kit available with a note. An injury on equipment you knew was faulty is the clearest kind of liability.
Who inspects a leisure site? The HSE or your local authority depending on the site, plus your insurer at renewal and often the swim governing bodies if you run programmes. A complete water log and a tidy equipment record answer most of what any of them ask.
Get the pack
The Gym and Leisure Pack gives you the whole routine as clean, printable PDFs ready for the duty manager’s clipboard tomorrow. You get the pool plant water test log with the target ranges printed on it, the daily equipment safety check, the disinfection routine and the cleaning schedule, all in plain English any team member can run on shift.
It is built so the pool and the gym floor are both covered to the same standard every single day, with a record you can hand to an inspector without hunting for it. No software, no logins, no monthly fee. Print it, laminate the daily logs, and bring quiet order to a site that has a lot moving at once.