Know Your Environment. Protect Your Health.

Nitrite

Southwood Water System

Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND60ND
2020N/A00N/A
2021ND160ND
2022ND60ND
2023N/A00N/A

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 1 ppm

The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.

ppm = parts per million

All test results

Date Lab ID Result
2018-01-23ND
2018-02-02ND
2018-04-05ND
2018-05-04ND
2018-05-09ND
2018-07-19ND
2019-01-28ND
2019-01-28ND
2019-01-28ND
2019-01-28ND
2019-01-28ND
2019-02-08ND
2021-03-174093774ND
2021-03-174096998ND
2021-03-184464988ND
2021-03-184465076ND
2021-03-184465041ND
2021-03-234098028ND
2021-03-234096992ND
2021-03-254093730ND
2021-03-254093731ND
2021-03-254093768ND
2021-03-254093770ND
2021-03-254093772ND
2021-03-254093773ND
2021-03-254093769ND
2021-03-254093771ND
2021-04-144465081ND
2022-01-274237320ND
2022-02-044268894ND
2022-02-104268896ND
2022-11-034388503ND
2022-11-034388505ND
2022-11-284389473ND