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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

City of Glendale

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

 

115

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
2014ND460ND
2015ND140ND
2016ND140ND
2017ND120ND
2018ND150ND
2019ND140ND

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
2014-01-02201401020046IND
2014-01-061401060900PPFND
2014-01-061401061121OSFND
2014-01-161401161005CB1ND
2014-01-161401161225A22ND
2014-03-271403271025CZ1FCND
2014-04-071404071025CB1FCND
2014-04-071404071118OSFCND
2014-04-071404071303PPFCND
2014-05-151405150920W30ND
2014-05-151405150920W30FCND
2014-05-151405151035W43FCND
2014-05-151405151035W43IND
2014-05-191405190835A22FCND
2014-05-211405211140W27ND
2014-05-211405211140W27FCND
2014-05-211405211210W16ND
2014-05-211405211210W16FCND
2014-05-211405211250CZ1ND
2014-05-211405211250CZ1FCND
2014-05-221405221040W22FCND
2014-05-271405271200CHBND
2014-05-271405271200CHBFCND
2014-07-101407100919A22FCND
2014-07-101407100959W22FCND
2014-07-101407101015W30FCND
2014-07-101407101035W43FCND
2014-07-101407101124CB1FCND
2014-07-141407141045OSFCND
2014-07-141407141136CZ1FCND
2014-07-141407141235PPFCND
2014-07-181407181055W18ND
2014-07-181407181055W18FCND
2014-08-111408111323W27FCND
2014-08-11140811340W16FCND
2014-10-031410031040W18FCND
2014-10-061410060922PPFCND
2014-10-061410061010CB1FCND
2014-10-0614100610390SFCND
2014-10-061410061140CZ1FCND
2014-10-071410071140W43FCND
2014-10-091410091320W22FCND
2014-10-141410141000W30FCND
2014-10-151410150950CHBFCND
2014-10-151410151045W16FCND
2014-10-151410151125W27FCND
2015-03-031503031005OSFCND
2015-04-061504061040OSFND
2015-04-061504061200CZ1ND
2015-04-061504061325PPFND
2015-04-271504271140W43FCND
2015-04-291504291015W22FCND
2015-04-291504291100W30FCND
2015-05-071505070930A22FCND
2015-05-211505211045CHBFCND
2015-05-211505211100W16FCND
2015-05-211505211315W27FCND
2015-07-061507060935OSFCND
2015-10-011510011038W18FCND
2015-10-051510051021OSFCND
2016-01-041601041012OSFCND
2016-04-181604180950W30ND
2016-04-181604181055W22ND
2016-04-191604190950W27ND
2016-04-191604191030A22ND
2016-04-211604210935CHBND
2016-04-211604211048W43ND
2016-04-251604250855PPFND
2016-04-251604250953OSFND
2016-04-251604251114CZ1ND
2016-04-271604271045W16ND
2016-04-291604290935W18ND
2016-06-091606091220CB1ND
2016-07-111607111050OSFCND
2017-04-03201704030392IND
2017-04-03201704030393IND
2017-04-03201704030394IND
2017-04-19201704190431IND
2017-04-19201704190432IND
2017-04-19201704190433IND
2017-04-19201704190434IND
2017-04-211504211030CB1FCND
2017-04-26201704260363IND
2017-04-26201704260364IND
2017-04-27201704270335IND
2017-05-16201705160653IND
2018-02-281802280941W30ND
2018-02-281802281018W27ND
2018-02-281802281235PPFND
2018-04-101804100946A22ND
2018-04-111804111024CZ1ND
2018-04-111804111048OSFND
2018-04-121804120932CHBND
2018-04-121804121100W16ND
2018-04-121804121158CB1ND
2018-04-121804121302W43ND
2018-04-241804240917W22ND
2018-08-171808171106W30FCND
2018-08-171808171228W27FCND
2018-10-151810151027W30FCND
2018-10-151810151126W27FCND
2019-01-161901160914W30FND
2019-01-161901161019W27FND
2019-04-151904150959OSFIND
2019-04-151904151118CZ1FIND
2019-04-151904151258PPFIND
2019-04-181904180915W30FND
2019-04-181904180955CHBFIND
2019-04-181904181120W16FIND
2019-04-181904181226CB1FIND
2019-04-181904181345A22RND
2019-04-191904190841W27FND
2019-05-021905020914W43FND
2019-08-230407093ND
2019-08-231908187-01ND