Can nature filter water? Explore how soil, roots, sediments and wetlands naturally remove or retain pollutants, where these processes work and where they reach their limits.
Water filters remove contaminants but also create spent media. Discover how regeneration, reusable filter materials and closed material loops could shift water treatment from disposable cartridges toward a circular model.
Microplastics can enter drinking water at several points. Explore the evidence for runoff, wastewater, treatment, distribution infrastructure, bottles and caps — and why identifying the source matters.
Not every water filter works by blocking particles. Learn how mechanical filtration differs from adsorption, why pore size is only part of the story and how engineered surfaces open new approaches to water treatment.
Drinking water does not need to have a pH of exactly 7. Learn what pH measures, why Germany allows 6.5–9.5 and how pH influences corrosion, minerals and water treatment.
Modern laboratories can detect chemicals at microgram and nanogram levels. Learn how to read these tiny concentrations, what detection limits mean and why presence alone does not determine health relevance.
Water can look perfectly clear while containing dissolved minerals, ions and trace substances. Learn why visibility tells us little about water chemistry and why different contaminants require different treatment mechanisms.
Where drinking water comes from matters. Discover how geology, rainfall, agriculture and surface contact shape groundwater, surface water and natural springs before treatment.
Hard water contains more calcium and magnesium, but that does not make it poor-quality water. Learn what hardness really means for limescale, taste, appliances and drinking water.
Water treatment does not end the story. Discover what happens as drinking water moves through storage, distribution networks and building plumbing before reaching the tap.
Klar2O
Safe water
for safe life
