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Reference · Voigtländer · Drinking-water hygiene in buildings

Ten care homes, one programme

A company managing several large senior care homes kept failing the drinking water regulations at ten of its facilities. Thermal disinfection and regular flushing did not resolve it. After a month of testing in one home, Voigtländer systems were installed in all of them.

10 of 10 homesequipped after one month of testing; regular water tests show consistently ideal results

Have your hygiene situation assessed See the values
10 homesin the programme
1 monthof testing in one facility before the decision
30-40 m³/daydrinking water consumption per facility
Every homethe systems were installed in all of the facilities

Source: Voigtländer case study.

Starting position

Findings that kept coming back

Preventing Legionella in residential buildings is difficult because the water systems are complex and the environments inside a building differ from one another.

A company managing several large senior care homes was concerned about drinking water hygiene. Ten of its facilities consistently failed to meet the drinking water regulations because of repeated bacterial contamination. Traditional measures such as thermal disinfection and regular flushing were in place, and the problems persisted anyway.

The decision

One month of testing before the rollout

Rather than change everything at once, the operator ran a month of intensive testing in a single facility.

On the strength of that month, the customer decided to install Voigtländer systems for drinking water disinfection across all of the facilities, each with a drinking water consumption of roughly 30 to 40 m³ a day.

How the programme works

From one home to all ten

  1. 1

    Finding

    Repeated bacterial contamination; the drinking water regulations were not met.

  2. 2

    Test month

    One month of intensive testing in a single facility.

  3. 3

    Rollout

    Voigtländer systems installed for drinking water disinfection in all facilities.

  4. 4

    Monitoring

    Water samples are tested regularly.

  5. +

    Anonymised

    Customer names withheld at the client's request.

The technology

Hot water, dosing and measurement

Inlet and water meter, brine tank, the three-chamber generator, anolyte tank, demand-led dosing, measurement and control. Press “Show me the process” to start the animated 3D diagram.

ready

Modelled from the Voigtländer plant schematic of an anolyte system, in the drawing language of the home page. The cards show documented facts only, no invented figures.

What the documentation records

What changed across the ten homes

10 homesfailed the drinking water regulations before the programme
Thermal firstthermal disinfection and regular flushing had not resolved it
1 monthof intensive testing in one facility before the rollout
Regular testingwater samples are tested regularly and the documentation records consistently ideal results

Source: Voigtländer case study, senior care homes. All statements relate to this project.

What this project shows

What this reference shows and what not

Source: Voigtländer case study. All values relate to this site.

What this reference shows

  • That a month of testing in one building was enough of a basis to decide for a whole estate.
  • That where thermal disinfection and flushing had not held, a monitored dosing concept did.

What it does not show

  • A guarantee of compliance through technology alone. Structural and operational causes still have to be dealt with.
  • A result for your building. Pipework, use, temperature control and the operating routine differ from building to building.

Related references

Other applications of the treatment approach.

Different sites and water tasks; results are not directly transferable.

From reference to your project

How this works for your site.

This programme covers ten care facilities of one operator. Explore the treatment approach and the decisions that matter before adapting it to your buildings.

01 / Solution Explore the treatment approach Technology, fit and next steps 02 / Guide Review the technical context Questions to resolve for your site

Your buildings

Start with the finding

The first step is the finding, the causes and the way the installation is run. From there follow dosing, measurement and documentation.

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