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Water Glossary: A B C D E F G H IL M N O PQ R S T UV WZ

nitrate (NO3-)

An oxidized ion of nitrogen. Nitrifying bacteria can convert nitrite (NO2-) to nitrate in the nitrogen cycle. Sodium nitrate (NaNO3) and potassium nitrate (KNO3) are used as fertilizer. The nitrate ion is regulated by the US Environmental Protection Agency.*

 

nitrite (NO2-)

An intermediate oxidized ion of nitrogen. Nitrifying bacteria can convert ammonia (NH3) to nitrite (NO2-) to nitrate (NO3-) in the nitrogen cycle. Sodium nitrite (NaNO2) is used in curing meats. The nitrite ion is regulated by the US Environmental Protection Agency.*

 

nonpoint source pollution

Pollution which comes from diffuse sources such as urban and agricultural runoff.

 

nutrient

An element or compound, such as nitrogen, phosphorous, and potassium, that is necessary for plant growth.

 

NWRA

National Water Resources Association. Advocates federal policies, legislation, and regulations promoting the development, management, protection, and beneficial use of water resources.

 

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