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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

Palm Beach County Water Utilities

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0200 ppm43ND - 0.0500 ppm
20130.0125 ppm42ND - 0.0300 ppm
20140.0125 ppm42ND - 0.0400 ppm
20150.00425 ppm41ND - 0.0170 ppm
20160.00625 ppm41ND - 0.0250 ppm
20170.00500 ppm41ND - 0.0200 ppm

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
2012-05-070.0200 ppm
2012-05-090.01000 ppm
2012-05-10ND
2012-05-140.0500 ppm
2013-05-13ND
2013-05-160.0200 ppm
2013-05-20ND
2013-05-220.0300 ppm
2014-05-15ND
2014-05-200.01000 ppm
2014-05-220.0400 ppm
2014-05-29ND
2015-06-16ND
2015-06-160.0170 ppm
2015-06-17ND
2015-06-22ND
2016-05-04ND
2016-05-11ND
2016-05-17ND
2016-05-240.0250 ppm
2017-05-03ND
2017-05-10ND
2017-05-17ND
2017-05-300.0200 ppm