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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Selah City Of

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.

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33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND60ND
2016ND50ND
2017ND50ND
2018ND60ND
2019ND60ND

ppm = parts per million

State and national drinking water standards and health guidelines

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
2014-08-2020767ND
2014-09-0422565ND
2014-09-0422566ND
2014-10-0826526ND
2014-10-0826527ND
2015-08-1123424ND
2015-09-1528027ND
2015-09-2429420ND
2015-09-2829782ND
2015-10-2032598ND
2015-10-2032597ND
2016-08-29ND
2016-08-29ND
2016-09-27ND
2016-09-27ND
2016-10-26ND
2017-08-24ND
2017-08-24ND
2017-10-24ND
2017-10-24ND
2017-10-24ND
2018-03-20ND
2018-03-20ND
2018-03-20ND
2018-08-08ND
2018-08-08ND
2018-10-03ND
2019-03-26ND
2019-03-26ND
2019-08-07ND
2019-08-07ND
2019-10-08ND
2019-10-24ND