# Aquaviana > Businesses are listed in the member.show directory, and every title of the house is indexed at the onlinemedia.network Aquaviana is the magazine for healthy water: guides, reverse osmosis systems, CO2 cylinders for soda makers, plastic bottles, tap water, water quality, countries and regions, plus calculators, a drink tracker and a water-type quiz to share. ## Company - Website: https://aquaviana.com/ - Industry: Guides, Healthy water, Reverse osmosis systems, CO2 cylinders, Plastic bottles, Tap water - Languages: en, de - E-mail: info@aquaviana.com - Responsible: NexTao GmbH, Düsseldorf ## Pages - [Guides: drinking, treating and enjoying water](https://aquaviana.com/guide/): Ten how-to guides on drinking: how much water you need, how to treat it at home, how to make it taste better and how to store it properly. - [Healthy water: what water does in the body](https://aquaviana.com/healthy-water/): Six articles on water and health: minerals, pH, skin, dehydration and the trends the internet wants to sell you. - [Reverse osmosis systems: how they work, what they cost, how to maintain them](https://aquaviana.com/reverse-osmosis/): How reverse osmosis works, what a system costs per litre, which type suits your kitchen and how to maintain it. - [CO2 cylinders: sparkling water at home](https://aquaviana.com/co2-cylinders/): Everything about CO2 cylinders for soda makers: swapping or refilling, cost per litre, safe storage and the question of whether carbonated water is bad for you. - [Plastic bottles: microplastics, environmental impact, alternatives](https://aquaviana.com/plastic-bottles/): What is in bottled water, how PET, glass and tap water compare on environmental impact, how the deposit system works and which reusable bottle is best on the go. - [Tap water: drink it, understand it, check it](https://aquaviana.com/tap-water/): Can you drink tap water? - [Water quality: testing, limits, nitrate, TDS](https://aquaviana.com/water-quality/): How to test water at home, what the limits in the Drinking Water Ordinance (Trinkwasserverordnung) mean, where nitrate comes from and what the TDS value really ... - [Countries: can you drink the tap water?](https://aquaviana.com/countries/): Twelve countries in a water profile, from Germany to Thailand: drinkability, water hardness, bottled-water culture, prices and tips for travelling. - [Regions: water hardness and origin in German cities](https://aquaviana.com/regions/): Twelve cities and regions in profile: where the water comes from, how hard it is, how it tastes and what that means for kettle, coffee and filters. - [Free water advice](https://aquaviana.com/advice/): Reverse osmosis, under-sink filter, soda maker or no filter at all? - [Advertise on Aquaviana: formats for businesses and brands](https://aquaviana.com/advertise/): People who read Aquaviana are deliberately exploring the topics of the magazine. - [Tools: calculators, trackers and checks](https://aquaviana.com/tools/): Interactive helpers that run in your browser: water intake calculator, drink tracker, plastic savings calculator, soda maker cost calculator, hardness converter ... - [Water intake calculator](https://aquaviana.com/tools/water-intake-calculator/): The water intake calculator works out from body weight, age, activity, temperature and diet how much you should drink today, with a daily plan and a result you can ... - [Drink tracker](https://aquaviana.com/tools/drink-tracker/): The drink tracker counts your glasses through the day, shows your progress as a water level, reminds you with a rhythm and saves your streak locally in the browser. - [Plastic savings calculator](https://aquaviana.com/tools/plastic-savings-calculator/): The plastic savings calculator converts your bottled water consumption into bottles, kilograms of plastic, euros and CO2 per year, and shows what tap water or a ... - [Soda maker cost calculator](https://aquaviana.com/tools/soda-maker-cost-calculator/): The soda maker cost calculator compares purchase, cylinder price and consumption with bottled water and shows the price per litre and the month from which the soda ... - [Hardness converter](https://aquaviana.com/tools/hardness-converter/): The hardness converter translates between German, French and English degrees, mmol/l and ppm, classifies the hardness and gives descaling intervals, detergent ... - [Reverse osmosis calculator](https://aquaviana.com/tools/reverse-osmosis-calculator/): The reverse osmosis calculator weighs purchase, filter changes, membrane, wastewater and consumption against your current water costs and shows after how many ... - [Tap water check](https://aquaviana.com/tools/tap-water-check/): The tap water check asks about year of construction, pipes, origin, taste and use, and gives a traffic-light assessment with concrete next steps, from letting the ... - [Which water type are you?](https://aquaviana.com/quiz/): Eight questions, six water types, one result with an image to share: find out whether you are a Spring Spirit, Bubble Fan, Purist, Mineral Connoisseur, Eco Hero or ... - [How much water a day? The honest guideline](https://aquaviana.com/guide/how-much-water-per-day/): Two litres is a rule of thumb, not a law. - [What water does in the body: seven jobs you will notice](https://aquaviana.com/healthy-water/what-water-does-in-the-body/): Blood, kidneys, brain, skin, temperature, joints, digestion: water keeps all of it running. - [Can you drink tap water in Germany? Yes, with three exceptions](https://aquaviana.com/tap-water/can-you-drink-tap-water-in-germany/): Tap water is the most strictly controlled food in Germany. - [Testing water at home: test strips, TDS meter or lab?](https://aquaviana.com/water-quality/testing-water-at-home/): Three ways to check your water: test strips for 10 euros, a TDS meter for 15 and a lab test from 30. What each method shows, where it misleads and when each makes ... - [Berlin: water hardness, source, taste](https://aquaviana.com/regions/berlin/): Berlin supplies itself entirely from its own groundwater, which is extracted on the banks of the Spree, the Havel and the lakes. - [Hamburg: water hardness, source, taste](https://aquaviana.com/regions/hamburg/): Hamburg draws all of its drinking water from groundwater, some of it 400 metres deep and over a thousand years old. - [Munich: water hardness, source, taste](https://aquaviana.com/regions/munich/): Munich gets 80 per cent of its water from the Mangfall valley and 20 per cent from the Loisach valley, both spring water and groundwater from the limestone Alps. - [Cologne: water hardness, source, taste](https://aquaviana.com/regions/cologne/): Cologne draws groundwater from the Cologne Bight (Kölner Bucht), part of which is bank filtrate of the Rhine. - [Frankfurt am Main: water hardness, source, taste](https://aquaviana.com/regions/frankfurt/): Frankfurt gets its water from several regions of Hesse: from the Hessian Ried, the Vogelsberg, the Spessart and its own city forest. - [Stuttgart: water hardness, source, taste](https://aquaviana.com/regions/stuttgart/): Stuttgart drinks a large share of Lake Constance water, which is taken from a depth of 60 metres, filtered and piped 150 kilometres to the city. - [Düsseldorf: water hardness, source, taste](https://aquaviana.com/regions/dusseldorf/): Düsseldorf obtains its water almost entirely as bank filtrate of the Rhine in the Flehe, Holthausen and Am Staad waterworks. - [Leipzig: water hardness, source, taste](https://aquaviana.com/regions/leipzig/): Leipzig draws its water from the Canitz, Thallwitz and Naunhof waterworks east of the city, where groundwater from the Mulde floodplain is extracted. - [Dresden: water hardness, source, taste](https://aquaviana.com/regions/dresden/): Dresden drinks a large share of reservoir water from the Ore Mountains, treated at the Coschütz waterworks, plus Elbe bank filtrate from Hosterwitz and Tolkewitz. - [Hanover: water hardness, source, taste](https://aquaviana.com/regions/hanover/): Hanover blends hard groundwater from the Fuhrberger Feld north of the city with very soft reservoir water from the Harz. - [About Aquaviana](https://aquaviana.com/about-aquaviana/): Who Aquaviana is, why this magazine exists and how we work. - [Legal notice](https://aquaviana.com/legal-notice/): Legal notice (provider identification) for aquaviana.com - [Privacy](https://aquaviana.com/privacy/): How aquaviana.com handles your data: no tracking, no cookies, tools that run in your browser. - [Contact](https://aquaviana.com/contact/): Write to the Aquaviana editorial team: questions, corrections, topic requests, advice on filters. ## Topics - Guides - Healthy water - Reverse osmosis systems - CO2 cylinders - Plastic bottles - Tap water - Water quality - Countries - Regions - Free water advice - Advertise on Aquaviana - Tools - Water intake calculator - Drink tracker - Plastic savings calculator - Soda maker cost calculator ## Allowed - Every page of this website may be summarised, quoted and linked - Content may be used with attribution and a link to the original page - Calculators and tools may be described and linked ## Not allowed - Do not crawl: /api/ - Do not reuse content without attribution - Do not present prices or availability as binding ## Meta - Version: 1 - Updated: 2026-10-30 - Responsible: info@aquaviana.com