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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

City of Garden Grove

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

121

Samples

0

Samples exceeding legal limit (MCL)

120

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20123.91 ppm2019ND - 6.74 ppm
20134.09 ppm20200.440 ppm - 6.42 ppm
20144.41 ppm23230.460 ppm - 8.37 ppm
20153.86 ppm18180.480 ppm - 6.35 ppm
20163.84 ppm18181.90 ppm - 4.44 ppm
20173.62 ppm22222.03 ppm - 4.99 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL) 10 ppm

ppm = parts per million

All test results

Date Lab ID Result
2012-01-114417-009-08153.43 ppm
2012-01-114417-011-10351.84 ppm
2012-01-114417-012-08353.76 ppm
2012-01-114417-014-07304.00 ppm
2012-01-114417-016-11153.25 ppm
2012-01-114417-039-09555.49 ppm
2012-01-114417-061-09404.59 ppm
2012-04-044417-006-0935ND
2012-04-044417-014-07303.97 ppm
2012-04-044417-016-11353.27 ppm
2012-04-044417-018-11053.50 ppm
2012-04-044417-019-09053.04 ppm
2012-04-044417-061-08354.27 ppm
2012-06-274417-013-14404.27 ppm
2012-07-254417-014-07254.04 ppm
2012-07-254417-039-12506.74 ppm
2012-07-254417-061-09304.24 ppm
2012-10-174417-014-07204.06 ppm
2012-10-174417-039-09455.71 ppm
2012-10-174417-061-09304.74 ppm
2013-01-094417-009-08403.60 ppm
2013-01-094417-011-10101.77 ppm
2013-01-094417-012-09053.64 ppm
2013-01-094417-014-08003.92 ppm
2013-01-094417-016-11503.37 ppm
2013-01-094417-039-11306.32 ppm
2013-01-094417-061-09454.70 ppm
2013-04-034417-006-14000.440 ppm
2013-04-034417-013-14352.20 ppm
2013-04-034417-014-07053.70 ppm
2013-04-034417-018-11003.37 ppm
2013-04-034417-019-07554.16 ppm
2013-04-034417-039-09556.42 ppm
2013-04-034417-061-09354.48 ppm
2013-07-244417-014-07003.98 ppm
2013-07-244417-039-09556.38 ppm
2013-07-244417-061-09354.64 ppm
2013-10-164417-014-07154.01 ppm
2013-10-164417-061-09254.25 ppm
2013-12-114417-039-10006.36 ppm
2014-01-084417-009-08353.53 ppm
2014-01-084417-011-11002.04 ppm
2014-01-084417-012-09553.28 ppm
2014-01-084417-014-07403.80 ppm
2014-01-084417-016-12203.48 ppm
2014-01-084417-019-08104.22 ppm
2014-01-084417-039-10408.37 ppm
2014-01-084417-061-09404.57 ppm
2014-01-224417-039-10006.50 ppm
2014-01-224417-039-10106.51 ppm
2014-04-024417-006-14000.460 ppm
2014-04-024417-013-14403.95 ppm
2014-04-024417-014-07004.01 ppm
2014-04-024417-018-11052.91 ppm
2014-04-024417-019-07404.42 ppm
2014-04-024417-039-10156.60 ppm
2014-04-024417-061-09004.43 ppm
2014-07-234417-014-07004.17 ppm
2014-07-234417-061-08254.22 ppm
2014-09-304417-039-10005.85 ppm
2014-10-154417-014-07003.84 ppm
2014-10-154417-039-09406.38 ppm
2014-10-154417-061-08303.88 ppm
2015-01-074417-009-08153.47 ppm
2015-01-074417-011-10101.75 ppm
2015-01-074417-012-09003.61 ppm
2015-01-074417-014-09203.84 ppm
2015-01-074417-016-11303.65 ppm
2015-01-074417-039-10356.35 ppm
2015-03-044417-061-08354.17 ppm
2015-04-014417-006-14000.480 ppm
2015-04-014417-013-14403.38 ppm
2015-04-014417-014-09254.02 ppm
2015-04-014417-016-11403.79 ppm
2015-04-014417-018-11003.64 ppm
2015-04-014417-019-07304.33 ppm
2015-04-014417-039-10005.05 ppm
2015-07-224417-014-09203.90 ppm
2015-07-224417-039-09404.27 ppm
2015-10-144417-014-09153.83 ppm
2015-10-144417-039-09406.00 ppm
2016-01-064417-009-08003.52 ppm
2016-01-064417-011-10051.90 ppm
2016-01-064417-012-08453.73 ppm
2016-01-064417-013-11504.11 ppm
2016-01-064417-014-09203.88 ppm
2016-01-064417-016-10453.86 ppm
2016-01-064417-018-11153.77 ppm
2016-01-064417-019-07354.40 ppm
2016-01-064417-039-09404.34 ppm
2016-01-064417-061-08304.29 ppm
2016-04-274417-013-11504.00 ppm
2016-04-274417-013-12003.98 ppm
2016-04-274417-014-09203.87 ppm
2016-04-274417-039-09504.44 ppm
2016-07-204417-014-09303.79 ppm
2016-07-204417-039-09503.95 ppm
2016-10-124417-014-10003.55 ppm
2016-10-124417-039-09403.72 ppm
2017-02-014417-009-08203.35 ppm
2017-02-014417-012-09153.61 ppm
2017-02-014417-013-11504.06 ppm
2017-02-014417-014-09353.74 ppm
2017-02-014417-016-11103.68 ppm
2017-02-014417-018-10453.73 ppm
2017-02-014417-019-07152.98 ppm
2017-02-014417-039-10004.35 ppm
2017-02-014417-061-08553.95 ppm
2017-03-014417-011-10202.47 ppm
2017-03-014417-018-10503.74 ppm
2017-03-014417-018-10553.70 ppm
2017-04-264417-011-10202.03 ppm
2017-04-264417-011-10252.04 ppm
2017-04-264417-013-12003.83 ppm
2017-04-264417-014-09253.69 ppm
2017-04-264417-016-11203.72 ppm
2017-04-264417-039-09554.03 ppm
2017-07-194417-014-09253.75 ppm
2017-07-194417-039-09454.31 ppm
2017-10-114417-014-09203.85 ppm
2017-10-114417-039-07204.99 ppm