LegioLog

Swimming pools, saunas and wellness

Legionella at your pool or sauna: every shower and every foot bath flushed, with time, name and result in one logbook.

This is about the showers and taps, not the pool water itself. A tag per shower, a sensor on the water heater of the pool hall, and the closed season of the outdoor pool as a period in the planning.

Your situation

What makes a swimming pool difficult

The showers run all day, but not all of them: a shower block on the quiet side sometimes stands still for days.

01

Women's and men's shower blocks

Every shower gets a tag and is listed separately in the logbook. The walking route goes per block, and anything left gives an alert.

02

The outdoor pool in the closed season

Outside the season the outdoor showers stand still. That closed season is a period: closed and drained, and an extra round past all showers on reopening.

03

Foot baths and the staff shower

A foot bath is cold water that is rarely refreshed; the staff shower runs once per shift. Both get a tag and a place in the weekly round.

04

A sauna with its own showers

The showers at the sauna are their own group in the planning, with the opening hours of the sauna.

How it works

Four steps, one line in the logbook

Step 1: A tag at the tap
Step 2: Phone against the tag
Step 3: The sensor sees the hot water
Step 4: The line is in the logbook
  1. 1

    A tag at the tap

    At every tap in the flushing round you stick a tag on the tile, like at shower 5 in the women's showers. One labelled bag per building; at the first tap you tell the app which tap it is.

  2. 2

    Phone against the tag

    Whoever flushes holds the phone against the tag and opens the tap. A timer on the screen counts down the flushing time of your site, one minute by default.

  3. 3

    The sensor sees the hot water

    The sensor on the hot pipe leaving the water heater (water heater pool hall), before the first branch, measures every 15 minutes and sees the hot water within that interval. Taps on the same installation together form one flushing round.

  4. 4

    The line is in the logbook

    Half an hour after the last tap the round closes. For each tap there is the time, the name and the result; if no hot water came, that is in it too, with an alert.

What you see

Three screens from the app

With made-up data, as it will look for you.

The temperature chart

The course of the day for each sensor. The jump when flushing shows that hot water came out of the installation.

Water heater pool hall
Hot water pipe · today
Confirmed
60°40°25°14:12 · tap61°24°13:0015:00

The line in the logbook

Every flush with time, name and result. Nothing can be changed afterwards; a correction is a new line.

Shower 5, women's showers
14:12 · Anja · verified: jump
Shower 6, women's showers
14:16 · Sem · pipe at temperature

The report

Key figures, findings and the results per flushing point, for the period the inspector asks for.

Legionella inspection report
Swimming pool The Wave, September 2026
Download report

Everything it does

What is in it now

  • Walking route per shower block

    The weekly round is a list per changing room or shower block on the phone; a tapped shower drops off the list.

  • Closed season for the outdoor pool

    Closed and drained outside the season, as a period on the outdoor pool group. On reopening the extra round is ready.

  • Flushing without an account

    Staff tap with their own phone and the flushing password of the site. Their name is on every flush, and they do not need an account.

  • Alerts

    A temperature outside the norm (after 3 readings in a row) or a flushing round that is not done gives an alert in the app and an email to whoever is responsible on site.

  • Report with one click

    PDF, Excel or CSV over a period of your choice, and a share link for the inspector that works for 24 hours.

  • The laboratory still takes the samples

    The laboratory results, the risk assessment and the water safety plan go into the same file as the logbook.

The shower room of a swimming pool with a row of showers, foot baths at the entrance and changing cubicles.

Who puts it up

Your maintenance team, in half an hour

The sensor goes on the hot pipe leaving the water heater of the pool hall, before the first branch; with a separate water heater for the sauna or the outdoor pool, a second one. You plug the gateway in at the till; you stick the tags on the tile at every shower.

An open box with two sensors, a gateway, tags, double-sided tape and pipe insulation.

The laboratory still takes the samples

We record the flushing in between. The laboratory results, the risk assessment and the water safety plan go into the same file.

Three steps: the sample from the laboratory, the flush in the app, the report with a stamp.

Price

A kit, then per month

  • Kit S, 1 hot water installation: €395 one-off and €39 per month.
  • Kit M, 2 to 3 installations: €595 one-off and €59 per month.
  • Kit L, 4 installations: €895 one-off and €89 per month.
  • Prefer to rent? Ask us.

All prices exclude VAT. From 5 buildings, a quotation to measure.

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Questions about swimming pools and saunas

Frequently asked questions

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