Water Analysis Combi Plus

Test your drinking water for chemical parameters, bacteria and Legionella

With the Water Analysis Combi Plus, you can have your drinking water tested in a laboratory for 23 chemical parameters, selected bacteria and Legionella. This water test combines the analysis of heavy metals, minerals and water hardness with extended microbiological testing. It provides an overview of important characteristics and potential contaminants in your water sample.

Why is water analysis with Legionella testing useful?

Drinking water in Switzerland is regularly monitored and is generally supplied in very good quality. However, older plumbing systems, fittings and prolonged periods of water stagnation can affect water quality at the point of use. Testing can also be useful for private water supplies, such as wells or springs.

While chemical analysis identifies possible contamination from lead, copper, nickel and other elements, microbiological testing provides information about the hygienic quality of the water. The analysis includes total bacterial counts at 22 °C and 36 °C, as well as testing for Escherichia coli (E. coli), coliform bacteria and Legionella.

When is the Water Analysis Combi Plus recommended?

• If you want to test your drinking water for chemical and microbiological parameters
• If your property has older plumbing or you suspect metal contamination
• If you use water from a private well or spring
• If you want to determine water hardness and selected mineral concentrations
• If you also want to test your water for Legionella

What does the Water Analysis Combi Plus examine?

The Water Analysis Combi Plus includes 23 chemical parameters and extended microbiological testing, including Legionella. The laboratory report provides measured concentrations and microbiological findings. Where applicable legal limits or requirements exist, the results can be compared with Swiss drinking water regulations.

Microbiological analysis

• Total bacterial count at 22 °C: Examination of culturable microorganisms under defined laboratory conditions
• Total bacterial count at 36 °C: Additional examination of culturable microorganisms at a higher incubation temperature
• Coliform bacteria: Hygiene indicators whose presence may suggest impaired water quality
• Escherichia coli (E. coli): An indicator of faecal contamination in water
• Legionella: Bacteria that can multiply particularly in hot water systems and may pose a health risk when inhaled in aerosols

These 23 chemical parameters are examined

Metals and other elements (14):

• Aluminium
• Lead
• Chromium
• Copper
• Manganese
• Nickel
• Iron
• Zinc
• Strontium
• Boron
• Barium
• Lithium
• Cadmium
• Cobalt

Other chemical parameters and water hardness (9):

• Nitrate
• Nitrite
• Magnesium
• Calcium
• Potassium
• Sodium
• Phosphorus / orthophosphate
• Sulphate
• Water hardness

Frequently asked questions about the Water Analysis Combi Plus

What is the difference between Combi and Combi Plus?

The Water Analysis Combi Plus extends the scope of the Water Analysis Combi by including Legionella testing. In addition to chemical measurements and general microbiological findings, you receive a result for Legionella.

Which bacteria are tested with the Combi Plus?

Microbiological testing includes total bacterial counts at 22 °C and 36 °C, coliform bacteria, Escherichia coli (E. coli) and Legionella. These tests provide different types of information about the hygienic quality of your water sample.

Why is Legionella testing important?

Legionella bacteria can multiply particularly in hot water systems. Inhaling water droplets containing Legionella, for example while showering, may pose a health risk. Targeted testing can help identify possible contamination at the sampled water outlet.

Can I test hot water with the Water Analysis Combi Plus?

Legionella is particularly relevant in hot water installations. For meaningful results, the sampling procedure and sampling location must be appropriate for the intended investigation. Please follow the supplied sampling instructions.

Is the Water Analysis Combi Plus suitable for well water and spring water?

Testing can also be useful for water from private wells or springs. The analysis provides information about the listed chemical and microbiological parameters. Depending on the water source and its intended use, additional tests may be necessary.

Are PFAS and pesticides also tested?

No. PFAS and pesticides are not included in the Water Analysis Combi Plus. Separate water analyses specifically designed for these substances are required.

Does the Water Analysis Combi Plus provide a complete assessment of drinking water quality?

The Water Analysis Combi Plus examines the listed chemical and microbiological parameters. It therefore provides a broad overview of the composition and hygienic quality of the submitted water sample. However, it does not cover every possible contaminant.

Chemical and microbiological water analysis with Legionella testing

The Water Analysis Combi Plus combines testing for 23 chemical parameters with microbiological examinations for selected bacteria and Legionella. It is suitable if you want to investigate several important characteristics of your drinking water through a combined laboratory analysis.

Important note: Legionella is particularly relevant in hot water systems. Reliable results require appropriate sampling. The Water Analysis Combi Plus examines only the listed parameters. The results apply to the submitted water sample and do not replace a comprehensive assessment of the entire drinking water installation.