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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

Delray Beach Water Department

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.170 ppm110.170 ppm
20130.270 ppm110.270 ppm
2014ND10ND
20150.112 ppm440.112 ppm
20160.120 ppm110.120 ppm
2017ND10ND

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
2012-09-180.170 ppm
2013-12-110.270 ppm
2014-10-30ND
2015-12-090.112 ppm
2015-12-090.112 ppm
2015-12-090.112 ppm
2015-12-090.112 ppm
2016-11-020.120 ppm
2017-10-12ND