Hotel hot tub maintenance: water changes, disinfection and records

Shared spa pools and in-room whirlpool baths are two different jobs. A shared pool runs continuous circulation, filtration and disinfection with daily measurements; an in-room bath is drained and its jets and pipework disinfected between guests. Türkiye's Legionella regulation sets no jacuzzi-specific schedule, so the hotel writes one and logs it.

The main pool has a plant room, a dosing pump and a log sheet. The jacuzzi in room 214 has a plug, six jets and a pipe run that stays wet between guests, and no plant room to do the work for you. This article separates the two cases, gives a day-to-day routine for each, sets out what the Turkish texts actually say, and shows what belongs on the log sheet so an inspector or a tour operator can read it without asking you a question.

Shared spa pool or in-room whirlpool bath: two different jobs#

A shared spa pool is a small pool with its own circulation, filtration and disinfection plant; an in-room whirlpool bath is a bathtub filled from the tap for one guest and drained afterwards. The water, the equipment and the person responsible are different in each case.

A shared spa pool circulates water continuously through a filter and a dosing point. A named operator measures it, and the evidence is a daily record. Bather load is high for the number of litres, and that ratio is the core of the problem.

An in-room whirlpool bath has no plant. Water arrives from the hotel's domestic supply, passes through the tub's own pipes and jets, and leaves through the drain. The risk sits in that pipework, which stays damp between guests.

The Regulation on the Health Principles for Swimming Pools covers open and closed pools used for swimming and their water (Article 2(1)), and excludes health-purpose spa (kaplıca) and mineral-water pools and pools not used commercially (Article 2(2)). It does not mention jacuzzis at all, so a shared hotel hot tub sits in an unclear place: neither expressly included nor expressly excluded. Decide how you will treat it, with your adviser, and write the decision into your procedure so the answer does not change with the person on shift.

The evidence differs too. For a shared pool you show measurements over time; for an in-room bath you show a between-guest disinfection step on the room's cleaning record. Both cases share one rule: if the step is not written down and initialled, it did not happen as far as an inspector or a tour operator is concerned.

Why does warm, aerated water need more attention than the main pool?#

Warm water is the range in which Legionella multiplies, aeration both strips disinfectant and throws droplets into the air, and a small volume carries a lot of bather load. Three mechanisms push in the same direction.

Temperature comes first. The bacteria grow best in warm water, which is why the regulation's routine measures for hot water are written around temperature control rather than around appearance. A spa pool holds water in exactly the comfortable range, all day, every day.

Aerosol comes second. Jets, bubbles and spray turn water into fine droplets that a person can breathe in. The Ministry of Health's guide names jacuzzis, alongside cooling-tower fans, shower heads, spray humidifiers and decorative fountains, among the things that spread water into the air this way.

Disinfectant demand comes third. Sweat, sunscreen, cosmetics and body oils consume the disinfectant in the water. In a small tub the same bather load sits in far fewer litres, so the residual falls faster than in the main pool. Add biofilm: the inner surfaces of jets and pipes are warm, wet and hard to brush, and a disinfectant that only touches the basin does nothing for the film inside the pipe run.

The guide also lists spa pools (SPA havuzları) and thermal pools among the sources of Legionella in community-acquired, travel-associated and hospital cases, and lists spas and hot pools among the places the bacteria most often colonise. The practical consequence: measure at the far end of the pool, not at the inlet, and treat the pipework as part of the water system rather than as bathroom fittings.

How do you run a shared spa pool day to day?#

Keep the water circulating and filtered without a break, measure and correct pH before disinfectant, and change part of the water on a written schedule tied to bather load rather than to how the water looks.

Run the plant as the manufacturer specifies, including overnight. A pool switched off at closing time is a pool with no disinfectant working in it. Backwash the filter on the manufacturer's interval or when the pressure gauge shows the rise the manufacturer states, and record which of the two triggered it.

Measure pH first, then the disinfectant residual, at the far end of the pool, and correct in that order. A correct residual at the wrong pH does not do the job. If you want the detail of the daily measurement routine, see measuring and correcting pH and chlorine each day.

On water changes: neither the Legionella regulation nor the Ministry guide gives a routine water-change schedule for a spa pool. Take the manufacturer's stated interval, adjust it for measured bather load, and write the calculation into the procedure. For example, if the manufacturer states a weekly partial change and your bather count per litre runs high in August, your procedure should say what you do in August and why.

Control bather load: post a maximum number of people at one time and have staff enforce it. This is the cheapest control available and the one most often left to chance. Keep the pool covered when closed; it holds heat and reduces evaporation, but a cover is not a treatment and does not replace a measurement.

On emptying and backwash discharge, no national text found sets where this water may go. Ask your local water and sewerage authority before you drain, and keep the answer on file.

How do you clean an in-room jacuzzi between guests?#

Drain it, clean the basin and the jet housings, then refill above the jets and run the jets with the disinfectant at the label's dose and contact time so the pipework is treated, not just the surfaces you can see.

The order matters. Cleaning first removes the organic load that would otherwise consume the disinfectant; running the jets afterwards carries the disinfectant through the pipe run, which is where the risk actually sits.

What the room attendant needs on the cart#

The cart should carry the approved disinfectant with its label readable, a measuring vessel for the dose, gloves, a non-abrasive pad for the basin, and the room record sheet or tablet. Nothing else should be used on the tub: no guest toiletries, no general-purpose spray from another floor, no product brought from home.

Where the deep clean fits#

The between-guest step treats the pipework with a short contact time. A periodic deep clean, on a written rotation, gives the jets and pipe run a longer, more thorough treatment and descales where the water is hard. Slot it into your deep cleaning rotation by room, season and task, and keep its own column on the record so a supervisor can see which rooms are due.

Never mix two cleaning products in the tub, and never use a dose above the label. A stronger mix is not a safer tub, and it can damage the jets and the surface. For the surrounding work, the step-by-step room cleaning order for room attendants places the tub step in its place in the full departure clean.

Who does what: spa, housekeeping and technical service#

Split the work by asset, not by shift: the spa team owns the shared pool's water, housekeeping owns the in-room bath between guests, and technical service owns the plant, the pipework and the faults that need a tool.

Give every asset one named owner, with a named deputy for days off. Shared ownership is how a log ends up with three days of the same handwriting. Housekeeping should be able to stop a room from going back on sale if the tub step was not done, without asking permission first. Technical service should be the only team that opens a plant room, changes a dosing setting or removes a jet fitting that needs a tool.

The person who measures should not be the only person who reviews the numbers: a supervisor signs the log weekly and queries gaps. Write the split into the job descriptions, not only into a procedure document, so it survives a change of manager.

What does the Legionella regulation actually require for a jacuzzi?#

Nothing specific. The regulation applies its routine protective measures to hotels and other tourist accommodation, and lists those measures for water tanks, hot water, taps and showers, cooling towers and heating, but it contains no provision written for spa pools or jacuzzis.

The Regulation on the Procedures and Principles for Controlling Legionnaires' Disease (opens in a new tab) (Resmî Gazete, 13 May 2015, No. 29354) applies its routine protective measures under Article 5 to hotels and other tourist accommodation, to spas (kaplıcalar) and to recreational areas with water that are open to the public. A hotel jacuzzi is inside that scope even though the text never names it. Article 8 covers water tanks, hot-water temperatures, taps and shower heads, cooling towers and the heating system; a thermal pool appears only in Article 10(3), as a routine sampling point for in-patient health facilities.

The Ministry of Health's Legionnaires' Disease Control Programme Guide (opens in a new tab) (2016) goes further. It names jacuzzis among the things that spread water into the air as aerosols, and in its table of points that must be sampled when a building's water system is investigated it asks for at least one sample from a jacuzzi, if there is one, while saying swimming pools need not be sampled.

What the guide does not give is a routine water-change or disinfection schedule for jacuzzis. That gap is the hotel's to fill, in writing, from the manufacturer's instructions and the hotel's own risk assessment. Read the two texts as a frame, not a recipe: they tell you that the jacuzzi is a source worth controlling and that it is a sampling point, and they leave the interval to you. For the wider water system duties, see Legionella control in hotel water systems: temperatures, flushing and records.

What goes on the log sheet, and what will a tour operator ask to see?#

A log sheet that a stranger can read without asking you a question: what was measured, when, by whom, what was corrected, and who checked it. A tour operator or an inspector asks for the filled sheet, not the policy.

One line per asset per day for the shared pool: date, time, pH, disinfectant residual, water temperature, correction made and dose, initials. One line per room per departure for the in-room bath: room number, date, product, dose, contact time, initials, and a column for the deep-clean rotation.

A corrective-action column that is actually used matters more than it looks. A log with no corrections in a year reads as a log nobody measured against. Add a weekly supervisor signature and a monthly review note; the gap that matters is the empty row, and only a reviewer will catch it. Keep the records for the period your adviser recommends, and keep them where a visitor can be shown them within a minute, not after a search of three offices.

What a tour operator or auditor typically asks: show me last week, show me the corrective action, and show me the same initials on the room record and the roster. The swimming pool health regulation as a checklist covers the wider set of records a pool inspection turns on.

What to do next#

Write the two procedures this week: one page for the shared spa pool and one for the in-room bath, each with a named owner, a schedule you can defend and a log line that matches it. The regulation tells you the jacuzzi is a source worth controlling and a point worth sampling; the interval, the dose and the signature are the hotel's own work, and the log is the only proof that the work happened.