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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Angola Pump District

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.

MORE ABOUT THIS CONTAMINANT

 

95

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0125 ppm161ND - 0.200 ppm
2015ND160ND
2016ND160ND
2017ND160ND
2018ND160ND
2019ND150ND

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
2014-01-30S531963ND
2014-02-24S5320800.200 ppm
2014-03-24S532614ND
2014-04-09S532514ND
2014-04-30S479083ND
2014-04-30S479080ND
2014-05-15S479204ND
2014-06-23S563085ND
2014-06-30S479239ND
2014-06-30S479238ND
2014-07-30S573139ND
2014-08-13S570845ND
2014-09-17S573325ND
2014-10-15S588598ND
2014-11-12S573426ND
2014-12-08S589345ND
2015-01-13S589449ND
2015-02-09S603037ND
2015-03-17S607799ND
2015-03-19S588766ND
2015-03-19S588765ND
2015-04-21S616551ND
2015-05-11S616620ND
2015-06-08S616737ND
2015-06-08S601989ND
2015-06-08S601990ND
2015-07-15S640140ND
2015-08-12S640248ND
2015-09-08S602029ND
2015-10-12S629131ND
2015-11-04S629149ND
2015-12-02S532367ND
2016-01-13S659757ND
2016-02-11S643249ND
2016-02-11S602099ND
2016-03-04S614682ND
2016-03-10S643257ND
2016-04-14S640101ND
2016-04-27S614685ND
2016-05-10S671539ND
2016-06-15S659877ND
2016-06-15S659094ND
2016-07-20S671638ND
2016-08-09S671616ND
2016-09-21S679619ND
2016-10-17S671701ND
2016-11-08S679631ND
2016-12-13S679723ND
2017-01-12S679728ND
2017-02-08S679739ND
2017-02-15S628883ND
2017-02-15S628882ND
2017-02-15S628881ND
2017-02-21S628880ND
2017-03-08S679741ND
2017-04-11S671552ND
2017-05-08S659837ND
2017-06-14S659907ND
2017-07-13S733924ND
2017-08-08S659971ND
2017-09-13S671523ND
2017-10-18S670311ND
2017-11-13S670314ND
2017-12-13S757678ND
2018-01-22S671534ND
2018-02-20S659863ND
2018-03-22S734010ND
2018-04-16S757680ND
2018-05-17S659916ND
2018-06-13S757683ND
2018-07-16S770802ND
2018-07-16S659869ND
2018-07-19S770576ND
2018-07-23S811979ND
2018-07-26S812054ND
2018-08-03S759489ND
2018-09-21S759492ND
2018-10-30S812559ND
2018-11-30S759597ND
2018-12-11S817050ND
2019-01-07S770578ND
2019-01-14S817110ND
2019-01-14S817109ND
2019-01-14S817112ND
2019-01-30S817115ND
2019-02-12S847878ND
2019-03-04S770876ND
2019-04-15S759598ND
2019-05-30S848016ND
2019-06-12S659870ND
2019-07-15S811838ND
2019-08-20S770779ND
2019-09-19S770586ND
2019-10-03S824174ND
2019-11-06S824175ND