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Nitrate Removal From Water

Product Description

Nitrogen is found in three common forms, nitrate, nitrite and ammonia.  Nitrate has the molecular formula NOˉ3, therefore it consists of one nitrogen atom surrounded by three oxygen atoms, with a net charge of negative one. 

Nitrate is very soluble in water and commonly found in ground water, levels from 0.1 ppm to 3 or 4 ppm are not uncommon. Nitrates have no detectable taste or smell compared with ordinary substances in water, so nitrate removal processes must either be foolproof or include extensive monitoring of the treated water. High levels of nitrate indicate an anthropogenic source such as fertilizers and farm/human waste.  Measuring nitrate is an easy test to determine if your well infiltration field is overlapping your septic system.  In concentrations as low as 10 to 20 ppm can cause death in infants, a problem known as ‘blue babies’. 

The Nitrates found in drinking water are normally transported by natural ground deposits, and they tend to be harmless to one’s health. Nevertheless, humans have become the primary source of transporting the Nitrates in drinking water when fertilizing or manuring their farm fields, to improve their soils. Other contributors of Nitrates in water are animal and human organic wastes. Nitrates can also be found in groundwater, rivers, and streams, and can be transported through irrigation, rain, and sewage disposal systems.

There are generally two acceptable ways to remove nitrates in water: reverse osmosis (RO) and ion exchange technology. 

Ion exchange resins have long been used for nitrate removal. Generally speaking, there are two kinds from which to choose: “nitrate-selective” and “standard.” The major difference between them is the relative affinity of multivalent ions like sulfate and arsenate. A fair number of nitrate-selective resins have been synthesized. The two types most widely used for potable water are tributylamine and triethylamine. Both are available with NSF certification for potable water.

Reverse Osmosis is the best technology for removing nitrate, the ion is highly rejected (95%+). Along with NO3, RO systems can remove other pollutant from water.  Pure Aqua, Inc. specializes in RO/NF technology, to see Pure Aqua’s standard line of packaged RO equipment visit our RO dedicated page:





·         Drinking water

·         Water for general use



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