The progressive intensification of agriculture, due to the increasing soil gain of nitrogen compounds, is largely responsible for the increase of nitrate concentrations in ground water. Since the harmful effects of nitrate on humans - especially infants - have been known for a while, Germany has introduced a limit value of 50 mg/l. For self-sufficient water suppliers, this value is controlled regularly by the health department.Drinking water treatment with nitrate filters
Nitrate reduction intended for the drinking water sector is an easily controllable process for which high-performance systems are available. They are practically identical in their construction to softening systems. They too use standard central control valves INDUWA IMP and IMP Pro, the only difference lies in the use of different ion exchange materials which exchanges the harmful nitrate for chloride.