Test your tap water and learn more about its quality!

Test Your Tap Water

Determine Your Tap Water Quality with Our Water Analyses

Easily and quickly detect potential contaminants in your tap water with our proven test kits. Laboratory analysis for heavy metals and many other risk parameters.

✔ Easy sampling - no prior knowledge required
✔ Clear analysis results
✔ Affordable prices for tap water laboratory analyses

Water analysis pesticides

Test whether you have pesticides or herbicides in your drinking water. Small amounts of these get into the drinking water again and again. Our pesticides drinking water test includes eight common pesticides and biocides, as well as the sum of all pesticide proportions determined in the laboratory Reasons why a water analysis can be useful for you: You consume your tap water regularly. The water shows abnormalities in color, smell or taste. There are people with a weak immune system or risk groups (babies, children, pregnant women or sick people) living in your household. The water is used to prepare baby food. You use your tap water for a soda maker. What does the Water Analysis Pesticides examine? With the Water Test Pesticides you can examine your drinking water for the presence of the following parameters: Alachlor, Alachlor-ESA, Atrazin, Bentazon, Bromacil, Chloridazon, Metolachlor, Nicosulfuron, Thifensulfuron-methyl, Chlortoluron, 2,6-Dichlorbenzamid, Desethylatrazin, Desisopropylatrazin, Dimethachlor, Diuron, Desmethyldiuron, Imidacloprid, Isoproturon, Mecoprop (MCPP), Metalaxyl (inkl. Isomere), Simazin, Terbuthylazin, Terbuthylazin-desethyl-2-hydroxy, MT14, 2,4-Dichlorphenoxyessigsäure, 2-Hydroxyatrazin, Aclonifen, Amidosulfuron, Ethidimuron, Boscalid, Bromoxynil, Chlormequat, Clodinafop, Clomazon, Clopyralid, Desmedipham, Dicamba, Dichlorprop (Isomere inkl. Dichorprop-P), Diflufenican, Dimefuron, Dimethachlor, Dimethenamid (Isomere inkl. Dimethenamid-P), Dimoxystrobin, Fenoxaprop (Isomere inklusive Fenoxaprop-P), Flazasulfuron, Florasulam, Fluazifop (Isomere inkl. Fluazifop-P), Flufenacet, Flumioxazin, Fluroxypyr, Flurtamone, Haloxyfop (Isomere inkl. Haloxyfop-P), Iodosulfuron-methyl, Ioxynil, Isoxaben, Lenacil, MCPA, Mesosulfuron-methyl, Mesotrion, Metamitron, Metazachlor, Metobromuron, Metosulam, Metribuzin, Metsulfuron-methyl, Napropamid, Pendimethalin, Pethoxamid, Picloram, Picolinafen, Pinoxaden, Propazin, Propoxycarbazon, Propyzamid, Prosulfocarb, Prosulfuron, Pyroxsulam, Quinmerac, Quinoclamin, Rimsulfuron, Sulcotrion, Topramezon, Triasulfuron, Tribenuron-methyl, Triclopyr, Triflusulfuron-methyl, Tritosulfuron, Fenuron, Prometryn, Metoxuron, Methabenzthiazuron, Hexazinon, Terbutryn, Monuron, Sebuthylazin, 2,4,5-T, 2,4-DB, Alachlor, Amitrol, Cyanazin, Linuron, MCPB, Dimethoat, Flonicamid, Iprodion, Methiocarb, Pirimicarb, Tebufenpyrad, Thiacloprid, Chlothianidin, Thiamethoxam, Carbofuran, Parathionethyl, Diflubenzuron, Fenoxycarb, Difenoconazol, N,N-Dimethylsulfonamid, Oxadixyl, Boscalid, Carbendazim, Cyflufenamid, Cymoxanil, Cyproconazol, Dimethomorph, Epoxyconazol, Azoxystrobin, Fenpropidin, Fenpropimorph, Fluazinam, Fluopicolid, Fluopyram, Flusilazol, Imazalil, Kresoxym-methyl, Mandipropamid, Metconazol, Proquinazid, Prothiocinazol, Pyrimethanil, Quinoxyfen, Spiroxamin, Tebuconazol, Tetraconazol, Triadimenol, Trifloxystrobin, Triticonazol, Cybutryn, Triclosan, Mycobutanil, Penconazol, Picoxystrobin, Prochloraz, Propamocarb, Propiconazol, Dimethachlor CGA 52266, Dimethachlor CGA 354742, Dimethachlor CGA, Metazachlor BH479-4, Metazachlor BH479-8, Metazachlor BH479-9, Metazachlor BH479-11, Terbuthylazin-desethyl-2-hydroxy MT13, Chloridazon-desphenyl, Chloridazon-desphenylmethyl, Metolachlor ESA, Metolachlor OA, Dimethenamid-ESA, Chlorthalonilsulfonsäure M12

CHF 299.00

Water analysis PFAS

Per- and polyfluorinated alkyl compounds (PFAS), also known as forever chemicals, are increasingly finding their way into our food chains - sometimes they are also found in drinking water. Some of these substances are suspected of being carcinogenic. You can analyse your drinking water for these chemicals with the PFAS water analysis. Reasons why a water analysis can be useful for you: You consume your tap water regularly. The water shows abnormalities in color, smell or taste. There are people with a weak immune system or risk groups (babies, children, pregnant women or sick people) living in your household. The water is used to prepare baby food. You use your tap water for a soda maker. What does the Water Analysis PFAS examine? With the Water Analysis PFAS you can examine your drinking water for the presence of the following parameters: ✓ PFOA ✓ PFNA ✓ PFOS ✓ PFHxS ✓ PFBA ✓ PFPeA ✓ PFHxA ✓ PFHpA ✓ PFDA ✓ PFUnDA ✓ PFDoDA ✓ PFTrDA ✓ PFBS ✓ PFPeS ✓ PFHpS ✓ PFNS ✓ PFDS ✓ PFUnDS ✓ PFDoDS ✓ PFTrDS

CHF 299.00

Water analysis Glyphosate

Glyphosate is the main component of several total or broad-spectrum herbicides used primarily in agriculture to kill weeds. It is produced both as an acid and as a salt. Its effect on human health remains controversial: the WHO's International Agency for Research on Cancer has classified it as "probably carcinogenic". As one of the most popular weedkillers, glyphosate inevitably enters the environment when it is applied to fields. In this way, glyphosate is also repeatedly detectable in surface waters and groundwater. The risk of glyphosate being detected in drinking water can therefore not be completely ruled out. The limit value for glyphosate according to the Drinking Water Ordinance is 0.1 µg/l (drinking water limit value for pesticides). A proposed increase in the draft of the revised Water Protection Ordinance was not implemented after considerable resistance. This test shows you whether residues of the pesticide glyphosate can be detected in your drinking water. Reasons why a water test can be useful for you: You consume your tap water regularly. The water shows abnormalities in color, smell or taste. There are people with a weak immune system or risk groups (babies, children, pregnant women or sick people) living in your household. The water is used to prepare baby food. You use your tap water for a soda maker.

CHF 295.00

Water analysis medicines

Test whether there are residues of medicines in your drinking water. Small amounts of these get into the drinking water again and again. Our drinking water analysis medicines includes 12 common medicines. Reasons why a water analysis can be useful for you: You consume your tap water regularly. The water shows abnormalities in color, smell or taste. There are people with a weak immune system or risk groups (babies, children, pregnant women or sick people) living in your household. The water is used to prepare baby food. You use your tap water for a soda maker. What does the Water Analysis Medcines examine? With the Water Analysis Medicines you can examine your drinking water for the presence of the following 12 parameters: ✓Clarithromycin ✓Erythromycin ✓Roxithromycin ✓Trimethoprine ✓Sulfamethazine ✓Sulfamethoxazole ✓Ibuprofen ✓Diclofenac ✓Carbamazepine ✓Oestrone ✓17-α-Ethynylestradiol ✓17-β-Eestradiol

CHF 229.00

Water analysis well water Opti

The laboratory analysis for your well water determines its relevant chemical ingredients. Through natural and human influences (climate, agriculture, rocks and industry) numerous substances such as nitrate, manganese or ammonium get into the well water. Why a laboratory analysis for your well water is valuable The chemical well water analysis provides you with relevant information that is valuable for you as a well operator. In this way you can check the water quality between the legally required examinations or when the water is used as industrial water. The well water analysis enables you to check the well water independently, so you can take a sample of your water yourself and send it to our test laboratory. Self-sampling means here that with this well water analysis it is possible to find out your water quality independently of authorities, waterworks and samplers. Analysis for the following parameters: ✓ ammonium ✓ calcium ✓ iron ✓ color ✓ smell ✓ potassium ✓ conductance ✓ magnesium ✓ manganese ✓ nitrate ✓ nitrite ✓ organically bound carbon (TOC) ✓ acid capacity ✓ turbidity ✓ hydrogen ion concentration (pH) ✓ water hardness

CHF 103.00

Water Test Opti

Test your water with the Opti water test and thus contribute to improved water hygiene. Your water is examined for toxic heavy metals in the laboratory, nutrients are also recorded and the water hardness is determined. Why a laboratory analysis for your drinking water is valuable As a rule, drinking water in Switzerland is of very good quality and the strict requirements of the Drinking Water Ordinance (TBDV) are complied with. But even after the house connection, pollutants such as heavy metals from the pipes and fittings can still get into the drinking water. Often pollutants cannot be seen with the naked eye and can be harmful to health if they are consumed continuously. Reasons why a water test can be useful for you: You consume your tap water regularly. The water shows abnormalities in color, smell or taste. There are people with a weak immune system or risk groups (babies, children, pregnant women or sick people) living in your household. The water is used to prepare baby food. You live in a house in which copper or even lead lines may be installed. You use your tap water for a soda maker. What is the Water Test Opti? With the Water Test Opti, you can check whether contaminants from the tap, pipes or other sources get into your drinking water. Heavy metals often come loose from old pipes or get into drinking water through insufficiently maintained installations. Pipe damage can also be the cause. Health risks cannot be ruled out with increased exposure. ➩ You can use the Opti drinking water test to determine the condition of your pipes and connections. Your water is examined for toxic heavy metals and the values are compared with the limit values of the Drinking Water Ordinance. This enables you to identify possible risks at an early stage. ➩ In addition, important nutrients in your tap water are recorded and the water hardness is determined. This gives you a detailed overview of the important chemical parameters of your drinking water. Analysis for these 23 parameters: Metals: ✓Aluminium ✓Lead ✓Chrome ✓Copper ✓Manganese ✓Nickel ✓Iron ✓Zinc ✓Strontium ✓Boron ✓Barium ✓Lithium ✓Cadmium ✓Cobalt Minerals: ✓Nitrate ✓Nitrite ✓Magnesium ✓Calcium ✓Potassium ✓Sodium ✓Phosphorus ✓Sulfate ✓Water hardness

CHF 101.00

Water Analysis Combi

Test your water with the Kombi water analysis and find out how good your drinking water is. Your water is tested in the lab for toxic heavy metals, and nutrients are also measured along with the determination of water hardness. Additionally, the water is tested for bacteria, both generally at different temperatures and specifically for E. coli and coliform bacteria ("fecal bacteria"). Why a lab analysis of your drinking water is worth it In general, drinking water in Switzerland is of very good quality, and the strict requirements of the Drinking Water Ordinance (TBDV) are met. However, even after the house connection, pollutants such as heavy metals can still enter the drinking water from the materials of the pipes and fittings. Often, pollutants are not visible to the naked eye and can affect health with long-term consumption. Particularly when operating a water softener or in stagnant parts of the home installation, bacterial growth may also occur. The Complete Drinking Water Analysis covers these common causes of problems in drinking water. Reasons why a water test might be useful for you: You regularly consume your tap water. The water shows abnormalities in color, odor, and taste. There are immunocompromised persons or risk groups (babies, children, pregnant women, or sick people) living in your household. The water is used to prepare baby food. You live in a house that might have copper or even lead pipes installed. You use your tap water for a sparkling water machine. What is the Kombi Water Analysis? With the Complete Water Analysis, you can check whether pollutants and bacteria from the faucet, pipes, or other sources are entering your drinking water. Often, heavy metals dissolve from old pipes or enter the drinking water through inadequately maintained installations, or bacteria may multiply in stagnant water or on deposits in older pipes. Water softeners are also frequent sources of such contamination. Pipe damage can also be a cause. With increased contamination, health risks cannot be ruled out. The Kombi Water Analysis tests the following parameters: Metals: ✓Aluminum ✓Lead ✓Chromium ✓Copper ✓Manganese ✓Nickel ✓Iron ✓Zinc ✓Strontium ✓Boron ✓Barium ✓Lithium ✓Cadmium ✓Cobalt Minerals: ✓Nitrate ✓Nitrite ✓Magnesium ✓Calcium ✓Potassium ✓Sodium ✓Phosphorus ✓Sulfate ✓Water hardness Bacteria: ✓Total germ count at 22°C incubation temperature ✓Total germ count at 36°C incubation temperature ✓Test for coliform bacteria and E. coli

CHF 101.00

Water Test Legionella

A legionella test is compulsory for many apartment buildings. This is because Legionella can cause serious diseases in humans. You can therefore test your water for Legionella too! Why is a Legionella test useful? The bacteria can get into the respiratory tract through aerosols (nebulised water), which are produced, for example, when showering. This can cause severe infections of the respiratory tract. With our Legionella test, you can have your water sample tested for dangerous germs quickly and reliably in a specialist laboratory. What makes legionella so dangerous? Legionella are among the gram-negative bacteria. They occur preferentially in warm water and can be dangerous for humans through inhalation of legionella-containing aerosols. Aerosols result from the nebulisation of water, for example in: Whirlpools Showers Air conditioners etc. By inhaling these water droplets, Legionella get into the lungs and can cause severe inflammation there. This inflammation is called legionnaires' disease. Legionnaires' disease is fatal in about 15-20% of cases. It is therefore important to detect legionella contamination at an early stage.

CHF 95.00

Water analysis bacteria

To ensure perfect water hygiene, a water test can be useful. Bacteria can get into tap water in a wide variety of ways and represent a potential hazard. In particular, the total number of bacteria in the water is often increased in bacterial tests. Coliform germs, which can cause gastrointestinal complaints, are particularly dangerous. Why should a water test for bacteria be carried out? Although the tap water in Switzerland is generally of very good quality, impurities can get into the pipe system. The local water supplier is obliged to guarantee excellent water quality, but only has this obligation up to the house connection. Bacteria not only get into the house in tap water, but are also often introduced into the water from outside. For example, dirty splash water or dishcloths can get bacteria into the water system, where they can multiply. Another risk factor are poorly maintained filter systems, dead lines (stagnant water) or inadequate water installation. Excellent water hygiene should be ensured, especially if there are immunocompromised people in the household. The bacteria water test can help to get an overview of the microbiological hygiene of your water. Which bacteria does the Water Test Bacteria examine? The Water Test Bacteria determines: Total bioburden at 22 ° C incubation temperature Total bioburden at 36 ° C incubation temperature Examination for coliforms and E. coli ✪ The total bioburden (germ count) is essential for assessing the microbiological situation. The total bioburden indicates how many microorganism colonies are on a nutrient medium after inoculating the examined substance.

CHF 95.00

Water analysis Bacteria Plus

To ensure perfect water hygiene, a water test can be useful. Bacteria can get into tap water in a wide variety of ways and represent a potential hazard. In particular, the total number of bacteria in the water is often increased in bacterial tests. Coliform germs, which can cause gastrointestinal complaints, are particularly dangerous.The Bacteria Plus water analysis tests bacteria specifically for enterococci in addition to the normal water analysis. Why should a water test for bacteria be carried out? Although the tap water in Switzerland is generally of very good quality, impurities can get into the pipe system. The local water supplier is obliged to guarantee excellent water quality, but only has this obligation up to the house connection. Bacteria not only get into the house in tap water, but are also often introduced into the water from outside. For example, dirty splash water or dishcloths can get bacteria into the water system, where they can multiply. Another risk factor are poorly maintained filter systems, dead lines (stagnant water) or inadequate water installation. Excellent water hygiene should be ensured, especially if there are immunocompromised people in the household. The bacteria water test can help to get an overview of the microbiological hygiene of your water. Which bacteria does the Water Test Bacteria examine? The Water Test Bacteria determines: Total bioburden at 22 ° C incubation temperature Total bioburden at 36 ° C incubation temperature Examination for coliforms and E. coliExamination for Enterococci ✪ The total bioburden (germ count) is essential for assessing the microbiological situation. The total bioburden indicates how many microorganism colonies are on a nutrient medium after inoculating the examined substance.

CHF 95.00

Water Analysis Baby

With the Water Analysis Baby, you can quickly and easily determine whether your tap water is suitable for preparing baby food. Because some parameters that can occur in drinking water are particularly dangerous for babies and pregnant women. Good reasons for the Water Analysis Baby: You want the water in your home to be used for baby food. There are pregnant women and small children in your house. You want to make sure that there are no pollutants such as lead in your tap water. Sampling is simple and the analysis result is prepared to be easily understood. You live in an old building. There are immunocompromised patients in your home. These 6 important parameters are recorded for you with the baby water analysis: Lead: The heavy metal lead is particularly dangerous for babies. Long-term damage, such as reduced intelligence, has been proven to be due to lead. Copper: Water for infants must not contain high concentrations of copper, as copper can be toxic and lead to liver and kidney damage. Nitrite: Nitrite in drinking water can lead to methaemoglobinaemia. Symptoms include blue skin and lips and shortness of breath. Nitrate: Nitrate enters drinking water mainly through agriculture. In the body, nitrate is converted into nitrite, which is particularly toxic to babies. Sulfate: On the still very sensitive gastrointestinal tract, an increased dose of sulfate in the drinking water can have a laxative effect on babies. Sodium: Low-sodium water should always be used to feed a baby. This is due to the fact that infants do not yet have fully developed kidneys and are therefore less able to break down excess sodium.

CHF 92.00

Water analysis Ideal

The water test Ideal tests your tap water, among other things, for corrosion-indicating substances and possible pollutants that can get into your drinking water, especially from the pipe material. Why should a water test with laboratory analysis be performed? The tap water in residential buildings is often not or only rarely checked because the tap water from the utility is of good quality. However, heavy metals can get into the water through chemical reactions between pipe material and tap water or through obsolete materials. This is especially the case with stagnant water that has remained in the pipes for a long time. Heavy metals can have a significant impact on health. In addition to health effects, increased values of various parameters can also lead to wear and tear on materials and technical devices. For example, iron (rust) can create unsightly stains and deposits. This can adversely affect water pipes and other devices. By carrying out a Water Test Ideal, you can learn more about possible corrosion of water pipes and possible sources of dangerous heavy metals. Analysis for these parameters: ✓Aluminium ✓Lead ✓Chrome ✓Iron ✓Copper ✓Nickel ✓Zinc ✓Strontium ✓Boron ✓Barium ✓Lithium ✓Cadmium ✓Cobalt

CHF 84.00

Water analysis single parameters

An analysis for individual parameters can be more economical if you are only interested in a single aspect, for example the lead content. However, if you are interested in several parameters, it is usually worth ordering one of our combined analyses. Why should a water test with laboratory analysis be performed? The tap water in residential buildings is often not or only rarely checked because the tap water from the utility is of good quality. However, heavy metals can get into the water through chemical reactions between pipe material and tap water or through obsolete materials. This is especially the case with stagnant water that has remained in the pipes for a long time. Heavy metals can have a significant impact on health. In addition to health effects, increased values of various parameters can also lead to wear and tear on materials and technical devices. For example, iron (rust) can create unsightly stains and deposits. This can adversely affect water pipes and other devices. By carrying out a Water Test Ideal, you can learn more about possible corrosion of water pipes and possible sources of dangerous heavy metals.

From CHF 44.90

Details

Tap Water – What You Should Know

In 2019, residues of the carcinogenic substance chlorothalonil were found in tap water during inspections in the canton of Zurich. In one out of three samples taken, the pesticide was present in an elevated dose. Such exceedances of limit values occur repeatedly. Should one be afraid to drink tap water now?

Can You Drink Tap Water?

Image by pixabay.com The tap water provided in Switzerland meets very high quality standards and is considered the best-controlled foodstuff in Switzerland. To be considered as drinking water, water must meet the strict requirements of the TBDV (ordinance of the EDI on drinking water as well as water in publicly accessible baths and shower facilities). Almost two-thirds of the Swiss population regularly drink tap water, with every second person doing so several times a day. The requirements for water quality have increased significantly in recent years. The strict control of tap water allows tap water to be drunk without hesitation in most cases.

However, contaminations of tap water occur from time to time. This is mainly due to the fact that the water supplier is only responsible for the drinking water quality up to the water meter. However, contaminants can also enter the tap water later via the house pipes. Therefore, it can be useful to regularly test tap water.

Where Does Tap Water Come From?

In Switzerland, drinking water comes from:

➥ 40% from spring water

➥ 40% from groundwater

➥ 20% from surface water

Due to Switzerland's geological structure, about 60% of the water obtained is of impeccable quality and does not even need to be treated anymore! However, surface water, which is used for drinking water purposes, undergoes a multi-stage, costly treatment. The water obtained is then distributed to the end consumer via an extensive distribution network after thorough checks.

Why Is It Useful to Test Your Tap Water?

According to Swiss law, the water supplier is only responsible for the impeccable quality of water up to the water meter. However, contaminants can still enter the tap water afterwards.

Why Should You Regularly Test Your Own Tap Water?

Contaminations in water often originate from the following sources:

➔ Faucets (e.g., fittings with hoses), aerators (perlators)

➔ Water filters

➔ Water heaters (drinking water heaters, drinking water storage tanks)

➔ Coarse particle filters (lack of maintenance)

➔ Technical systems

➔ Wells for self-sufficiency

Regular self-checks also ensure excellent water quality in your own home.

Why a Tap Water Test Can Be Useful for You:

➥ You regularly drink your tap water.

➥ Your water shows abnormalities in color, smell, and taste.

➥ Babies, children, pregnant women, or sick people live in your household (they are particularly susceptible to water pollutants).

➥ You use tap water for preparing baby food.

➥ You live in a house that may be older than 100 years. There may still be lead pipes in the house installation.

➥ You use your tap water for a water carbonator.

Regular monitoring ensures excellent water quality even in your own home.

How Can I Have My Tap Water Tested?

You can easily order self-testing kits in our shop. You simply and flexibly take the samples yourself. Your water will then be analyzed in a specialized laboratory.

To test tap water, you will receive a test kit that includes everything for sampling:

➥ suitable sample containers

➥ data collection form with instructions

➥ practical return box including return label

You can take your water sample according to the instructions whenever and wherever you like. This way, you can independently and autonomously test your tap water. After taking the water sample, it will be sent to the laboratory using the return box. In the sample acceptance, your data will be digitized and processed by IT. The laboratory analysis of your water sample will be carried out by experienced and qualified laboratory personnel.

Subsequently, you will receive your analysis results shortly.

Get Your Results in Just 3 Steps

how the water test works

❶ You can easily order the test kit for the analysis here in our shop. Our water test kit will be conveniently sent to your home within a short time.

❷ You take the water sample yourself. Thanks to the detailed instructions, you do not need any previous knowledge. Now all you have to do is send the test kit to the provided address. In the laboratory, your sample is examined for all parameters of the test.

❸ Our experts will examine your sample in the laboratory. Afterwards, you will receive a comprehensive result that clearly explains all measured values with the help of graphics.

How Much Does a Tap Water Test Cost?

A tap water test uncomplicatedly determines the water quality of your tap water as well as the condition of your pipes and fixtures. A particularly fast method for checking certain parameters is test strips, which usually provide an immediate result. Such tests are often available for just a few francs. Quick tests provide a good and fast orientation but usually cannot display the measured parameters very precisely.

If you want to check the condition of your tap or well water more accurately, a laboratory analysis is therefore recommended.

However, the question naturally arises about the costs of such an analysis!

Depending on the scope of the required water analysis, the price of a professional laboratory analysis ranges between 75 CHF and 100 CHF. With such laboratory analyses, you receive an analysis for self-monitoring.

If a laboratory analysis is required to be valid as a template for authorities, the sampling must be carried out by a trained sampler. In this case, additional costs for travel and sampling arise.

In addition, the price for a drinking water analysis varies depending on the parameters to be examined. The more parameters to be examined, the more expensive the analysis becomes. Therefore, combination analyses are particularly recommended here. For example, our Opti Water Test costs 94 CHF and examines a total of 17 parameters.

Sources:

https://www.bluewin.ch/de/leben/fit-gesund/koennen-wir-noch-sorglos-schweizer-leitungswasser-trinken-295214.html

https://www.myswitzerland.com/de-de/planung/ueber-die-schweiz/zahlen-und-fakten/general-information/trinkwasser/

http://trinkwasser.svgw.ch/index.php?id=755

https://www.ewbuchs.ch/Wasser-Strom/Wasserversorgung/Wasserpreis-Zahlen-Fakten/Interessantes-zum-Thema-Wasser/Trinkwasser-in-der-Schweiz