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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Salt Lake City 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.

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113

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND140ND
20150.00667 ppm151ND - 0.1000 ppm
2016ND250ND
20170.00155 ppm222ND - 0.0240 ppm
2018ND160ND
2019ND210ND

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 Result
2014-01-10ND
2014-05-23ND
2014-05-30ND
2014-05-30ND
2014-06-03ND
2014-06-11ND
2014-06-25ND
2014-06-25ND
2014-07-01ND
2014-07-01ND
2014-07-02ND
2014-07-09ND
2014-07-09ND
2014-07-09ND
2015-01-230.1000 ppm
2015-01-23ND
2015-01-30ND
2015-01-30ND
2015-02-27ND
2015-05-08ND
2015-05-15ND
2015-06-19ND
2015-06-19ND
2015-06-19ND
2015-06-19ND
2015-07-10ND
2015-07-10ND
2015-07-10ND
2015-07-17ND
2016-01-08ND
2016-01-08ND
2016-01-15ND
2016-02-12ND
2016-02-26ND
2016-03-25ND
2016-05-19ND
2016-05-19ND
2016-06-03ND
2016-06-03ND
2016-06-10ND
2016-06-10ND
2016-06-10ND
2016-06-24ND
2016-06-24ND
2016-06-24ND
2016-06-28ND
2016-06-28ND
2016-07-08ND
2016-07-08ND
2016-07-13ND
2016-07-29ND
2016-07-29ND
2016-07-29ND
2016-09-08ND
2017-01-130.01000 ppm
2017-01-13ND
2017-01-20ND
2017-03-03ND
2017-03-24ND
2017-06-090.0240 ppm
2017-06-09ND
2017-06-16ND
2017-06-16ND
2017-06-16ND
2017-06-20ND
2017-06-23ND
2017-06-30ND
2017-06-30ND
2017-07-14ND
2017-07-14ND
2017-07-21ND
2017-07-21ND
2017-08-03ND
2017-08-08ND
2017-08-08ND
2017-08-22ND
2018-05-25ND
2018-05-25ND
2018-06-01ND
2018-06-01ND
2018-06-05ND
2018-06-12ND
2018-06-13ND
2018-06-14ND
2018-06-15ND
2018-06-15ND
2018-06-20ND
2018-06-20ND
2018-06-26ND
2018-06-26ND
2018-06-29ND
2018-07-11ND
2019-01-11ND
2019-01-11ND
2019-02-01ND
2019-04-26ND
2019-05-03ND
2019-05-31ND
2019-06-19ND
2019-06-19ND
2019-06-21ND
2019-06-25ND
2019-06-26ND
2019-06-27ND
2019-07-03ND
2019-07-03ND
2019-07-23ND
2019-07-23ND
2019-07-23ND
2019-07-23ND
2019-08-07ND
2019-08-16ND
2019-08-16ND