One way to clean water from nitrates is to install a reverse osmosis filter. Such purification equipment is guaranteed to eliminate these dangerous contaminants. Reverse osmosis filters have several successive purification stages:
three preliminary cartridges - polypropylene and coal (removal of chlorine, mechanical impurities, organic, pesticides, etc.);
reverse osmosis membrane (removal of pollutants at molecular level);
coal post-filter (improving organoleptic properties of water).
As well as additional stages of purification designed to saturate water with minerals, affect it with ultraviolet rays, etc. Such multi-level purification makes the water as clean, tasty and healthy as possible. It can be consumed without boiling in a raw form. You can also buy Aqua-Ionizer Deluxe 7.0 to take care of the water quality.