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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

City of Glendale

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

MORE ABOUT THIS CONTAMINANT

 

116

Samples

0

Samples exceeding legal limit (MCL)

98

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20143.67 ppm4638ND - 8.01 ppm
20153.65 ppm1412ND - 8.08 ppm
20163.39 ppm1412ND - 8.60 ppm
20172.58 ppm1211ND - 7.20 ppm
20183.69 ppm1513ND - 8.24 ppm
20193.38 ppm1512ND - 8.05 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Lab ID Result
2014-01-02201401020046I6.00 ppm
2014-01-061401060900PPFND
2014-01-061401061121OSF4.55 ppm
2014-01-161401161005CB14.04 ppm
2014-01-161401161225A221.66 ppm
2014-03-271403271025CZ1FC1.34 ppm
2014-04-071404071025CB1FC4.11 ppm
2014-04-071404071118OSFC6.25 ppm
2014-04-071404071303PPFCND
2014-05-151405150920W304.93 ppm
2014-05-151405150920W30FC4.93 ppm
2014-05-151405151035W43FC5.13 ppm
2014-05-151405151035W43I5.13 ppm
2014-05-191405190835A22FC1.85 ppm
2014-05-211405211140W275.49 ppm
2014-05-211405211140W27FC5.49 ppm
2014-05-211405211210W164.53 ppm
2014-05-211405211210W16FC4.53 ppm
2014-05-211405211250CZ1ND
2014-05-211405211250CZ1FCND
2014-05-221405221040W22FC8.01 ppm
2014-05-271405271200CHB1.99 ppm
2014-05-271405271200CHBFC1.99 ppm
2014-07-101407100919A22FC1.76 ppm
2014-07-101407100959W22FC5.87 ppm
2014-07-101407101015W30FC4.90 ppm
2014-07-101407101035W43FC4.34 ppm
2014-07-101407101124CB1FC4.09 ppm
2014-07-141407141045OSFC4.35 ppm
2014-07-141407141136CZ1FCND
2014-07-141407141235PPFCND
2014-07-181407181055W186.20 ppm
2014-07-181407181055W18FC6.20 ppm
2014-08-111408111323W27FC5.09 ppm
2014-08-11140811340W16FC4.39 ppm
2014-10-031410031040W18FC5.40 ppm
2014-10-061410060922PPFCND
2014-10-061410061010CB1FC4.10 ppm
2014-10-0614100610390SFC3.75 ppm
2014-10-061410061140CZ1FCND
2014-10-071410071140W43FC5.64 ppm
2014-10-091410091320W22FC5.81 ppm
2014-10-141410141000W30FC4.97 ppm
2014-10-151410150950CHBFC2.49 ppm
2014-10-151410151045W16FC2.84 ppm
2014-10-151410151125W27FC4.53 ppm
2015-03-031503031005OSFC4.66 ppm
2015-04-061504061040OSF2.99 ppm
2015-04-061504061200CZ1ND
2015-04-061504061325PPFND
2015-04-271504271140W43FC5.84 ppm
2015-04-291504291015W22FC6.58 ppm
2015-04-291504291100W30FC5.92 ppm
2015-05-071505070930A22FC1.87 ppm
2015-05-211505211045CHBFC1.57 ppm
2015-05-211505211100W16FC1.59 ppm
2015-05-211505211315W27FC4.26 ppm
2015-07-061507060935OSFC4.89 ppm
2015-10-011510011038W18FC8.08 ppm
2015-10-051510051021OSFC2.78 ppm
2016-01-041601041012OSFC1.35 ppm
2016-04-181604180950W305.19 ppm
2016-04-181604181055W227.12 ppm
2016-04-191604190950W275.77 ppm
2016-04-191604191030A221.98 ppm
2016-04-211604210935CHB1.65 ppm
2016-04-211604211048W433.15 ppm
2016-04-251604250855PPFND
2016-04-251604250953OSF2.62 ppm
2016-04-251604251114CZ1ND
2016-04-271604271045W164.15 ppm
2016-04-291604290935W188.60 ppm
2016-06-091606091220CB13.69 ppm
2016-07-111607111050OSFC2.21 ppm
2017-04-03201704030392I0.340 ppm
2017-04-03201704030393I0.490 ppm
2017-04-03201704030394IND
2017-04-19201704190431I5.30 ppm
2017-04-19201704190432I0.330 ppm
2017-04-19201704190433I1.40 ppm
2017-04-19201704190434I5.90 ppm
2017-04-211504211030CB1FC3.95 ppm
2017-04-26201704260363I7.20 ppm
2017-04-26201704260364I0.500 ppm
2017-04-27201704270335I2.20 ppm
2017-05-16201705160653I3.40 ppm
2018-02-281802280941W306.21 ppm
2018-02-281802281018W274.07 ppm
2018-02-281802281235PPFND
2018-04-101804100946A222.06 ppm
2018-04-111804111024CZ1ND
2018-04-111804111048OSF1.75 ppm
2018-04-121804120932CHB1.77 ppm
2018-04-121804121100W161.50 ppm
2018-04-121804121158CB12.62 ppm
2018-04-121804121302W433.57 ppm
2018-04-241804240917W228.24 ppm
2018-08-171808171106W30FC7.03 ppm
2018-08-171808171228W27FC5.84 ppm
2018-10-151810151027W30FC6.28 ppm
2018-10-151810151126W27FC4.35 ppm
2019-01-161901160914W30F5.96 ppm
2019-01-161901161019W27F4.29 ppm
2019-04-151904150959OSFIND
2019-04-151904151118CZ1FIND
2019-04-151904151258PPFIND
2019-04-181904180915W30F5.81 ppm
2019-04-181904180955CHBFI1.97 ppm
2019-04-181904181120W16FI1.91 ppm
2019-04-181904181226CB1FI2.48 ppm
2019-04-181904181345A22R2.15 ppm
2019-04-191904190841W27F4.30 ppm
2019-05-021905020914W43F3.32 ppm
2019-08-2304070934.18 ppm
2019-08-231908187-018.05 ppm
2019-10-221910030-016.29 ppm