Filtration is the first step in a water purification system. Filtration removes suspended solids and corrects problems such as excess chlorine, organic compounds, low pH, iron, and many others. Multimedia filters contain several types of filtrating media. The upper layers capture big particles, while smaller particles are successfully retained in the lower layers of the filtering bed. The result is a very efficient filtrating system, since matter removal is carried out throughout the filtering bed. Multimedia filters generally remove particles 15 to 20 microns or larger. Also, water goes through layers of activated carbon to eliminate undesirable tastes, colors, odors, and chlorine. 

Ultraviolet rays have germicidal effects and eliminate any bacteria or viruses present in water. The safety of UV disinfection has been scientifically proved. It is safe, effective and environmentally-friendly compared to other water purification systems which utilize chemicals, such as chlorination.  

Microfiltration inhibits the reproduction of microorganisms and allows longer shelf-lives. Microfiltration is a membrane separation technique by which finer particles, with radii ranging from 0.1 to 1.5 microns, are separated from a liquid.  Microfiltration membranes have a nominal pore size of 0.2 microns.

Reverse osmosis uses a semipermeable membrane to separate and remove dissolved solids, organic compounds, pyrogens, colloidal matter, submicroorganisms, viruses and bacteria from water. The process is called "reverse" osmosis because it requires pressure to force water through a membrane, so that impurities are left behind. Reverse osmosis can remove from 95% to 99% of total dissolved solids (TDS) and 99% of all bacteria, thus providing safe, pure water.

Ozone is three times more powerful than chlorine. It eliminates and prevents any bacterial growth through a process which generates ozone by means of a high-voltage discharge which converts oxigen (O₂) into ozone (O₃). The extra oxygen atom attracts and destroys odors, bacteria and viruses without leaving any chemical residues that might negatively affect health or water taste. Also, as long as the bottle remains sealed, the ozone in the headspace will preserve water quality for longer than one year.