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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

Golden State Water Company - West Orange

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

 

204

Samples

0

Samples exceeding legal limit (MCL)

160

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20142.71 ppm1613ND - 5.58 ppm
20152.32 ppm6952ND - 5.90 ppm
20162.57 ppm6150ND - 6.20 ppm
20172.74 ppm1613ND - 5.27 ppm
20182.32 ppm2721ND - 5.27 ppm
20192.48 ppm1511ND - 4.96 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
2014-02-034417-055-08200.497 ppm
2014-02-114417-017-11353.03 ppm
2014-02-134417-019-08155.58 ppm
2014-02-134417-029-08400.587 ppm
2014-03-044417-025-09254.18 ppm
2014-03-194417-007-1040ND
2014-03-194417-010-1105ND
2014-03-194417-014-0830ND
2014-03-194417-016-08451.54 ppm
2014-05-214417-019-09505.53 ppm
2014-05-214417-023-10101.81 ppm
2014-05-214417-024-08204.11 ppm
2014-07-304417-021-11002.20 ppm
2014-08-124417-018-07553.48 ppm
2014-08-124417-019-11255.42 ppm
2014-11-044417-019-09055.47 ppm
2015-02-034417-010-1035ND
2015-02-034417-014-1345ND
2015-02-034417-016-13151.37 ppm
2015-02-034417-018-11303.42 ppm
2015-02-034417-019-12005.24 ppm
2015-02-044417-021-09252.19 ppm
2015-02-044417-023-11101.72 ppm
2015-02-044417-024-09004.04 ppm
2015-02-044417-025-09555.49 ppm
2015-02-044417-029-10100.610 ppm
2015-02-054417-055-10400.576 ppm
2015-02-124417-007-1010ND
2015-02-124417-017-11152.90 ppm
2015-05-124417-018-12053.52 ppm
2015-05-124417-019-11455.40 ppm
2015-05-124417-023-09451.81 ppm
2015-05-124417-025-10055.60 ppm
2015-05-274417-021-09002.33 ppm
2015-08-054417-018-10253.73 ppm
2015-08-054417-019-13505.69 ppm
2015-08-054417-025-12205.90 ppm
2015-08-172706-010-0930ND
2015-09-012706-007-1014ND
2015-09-012706-010-0945ND
2015-09-012706-017-09273.10 ppm
2015-09-012706-018-10083.90 ppm
2015-09-012706-019-11405.10 ppm
2015-09-012706-021-09052.40 ppm
2015-09-012706-023-08321.90 ppm
2015-09-012706-024-13154.20 ppm
2015-09-012706-025-08105.30 ppm
2015-09-012706-029-08140.700 ppm
2015-09-082706-014-1035ND
2015-09-082706-016-11081.40 ppm
2015-09-094417-010-0820ND
2015-09-282706-055-02120.760 ppm
2015-10-052706-017-09452.80 ppm
2015-10-052706-018-10443.50 ppm
2015-10-052706-019-07555.20 ppm
2015-10-052706-023-08561.70 ppm
2015-10-052706-025-08305.50 ppm
2015-10-052706-029-08350.600 ppm
2015-10-062706-016-11101.40 ppm
2015-10-062706-055-11320.590 ppm
2015-10-122706-007-0951ND
2015-10-122706-010-1108ND
2015-10-122706-014-0855ND
2015-10-122706-021-08422.20 ppm
2015-10-122706-024-13154.50 ppm
2015-11-022706-007-0935ND
2015-11-022706-010-1048ND
2015-11-022706-014-1120ND
2015-11-022706-016-11371.40 ppm
2015-11-022706-055-11580.620 ppm
2015-11-094417-019-09505.62 ppm
2015-11-094417-025-09205.88 ppm
2015-11-232706-021-14081.80 ppm
2015-12-072706-007-1040ND
2015-12-072706-010-1055ND
2015-12-072706-014-1215ND
2015-12-072706-016-11451.40 ppm
2015-12-072706-017-11502.50 ppm
2015-12-072706-018-12303.40 ppm
2015-12-072706-019-08405.00 ppm
2015-12-072706-021-13312.10 ppm
2015-12-072706-023-09481.70 ppm
2015-12-072706-024-12484.40 ppm
2015-12-072706-025-09085.40 ppm
2015-12-072706-029-09120.610 ppm
2016-01-062706-007-0915ND
2016-01-112706-016-09201.60 ppm
2016-01-112706-017-10013.00 ppm
2016-01-112706-018-10253.70 ppm
2016-01-112706-019-14155.90 ppm
2016-01-112706-021-13352.30 ppm
2016-01-112706-023-09191.90 ppm
2016-01-112706-024-12304.70 ppm
2016-01-112706-025-08546.20 ppm
2016-01-112706-029-09010.750 ppm
2016-02-012706-018-11053.40 ppm
2016-02-012706-019-08455.40 ppm
2016-02-012706-021-13252.00 ppm
2016-02-012706-023-09451.70 ppm
2016-02-012706-025-09205.60 ppm
2016-02-012706-029-09240.640 ppm
2016-02-022706-010-1120ND
2016-02-022706-016-10301.30 ppm
2016-02-022706-017-13252.70 ppm
2016-02-022706-024-14003.90 ppm
2016-02-094417-010-0955ND
2016-02-094417-016-08451.50 ppm
2016-02-174417-017-09102.77 ppm
2016-02-174417-019-10455.43 ppm
2016-02-174417-024-09404.35 ppm
2016-02-174417-025-10055.73 ppm
2016-02-174417-029-10250.670 ppm
2016-03-012706-010-0802ND
2016-03-012706-016-09481.50 ppm
2016-03-072706-017-10152.50 ppm
2016-03-072706-018-10503.20 ppm
2016-03-072706-019-09155.00 ppm
2016-03-072706-021-09502.00 ppm
2016-03-072706-023-09301.60 ppm
2016-03-072706-024-08204.10 ppm
2016-03-072706-025-08555.40 ppm
2016-03-072706-029-09000.620 ppm
2016-03-142706-007-1405ND
2016-03-174417-007-0830ND
2016-04-042706-007-1022ND
2016-04-042706-010-0956ND
2016-04-042706-016-11221.30 ppm
2016-04-042706-017-11202.50 ppm
2016-04-042706-018-11453.30 ppm
2016-04-042706-019-09155.20 ppm
2016-04-042706-021-10402.00 ppm
2016-04-042706-023-09551.60 ppm
2016-04-042706-024-08454.20 ppm
2016-04-042706-029-09450.630 ppm
2016-04-112706-014-14100.580 ppm
2016-04-194417-014-1115ND
2016-05-164417-018-08253.55 ppm
2016-05-164417-019-10005.34 ppm
2016-05-164417-023-09351.79 ppm
2016-05-164417-024-08454.44 ppm
2016-05-164417-024-09004.45 ppm
2016-06-014417-010-0810ND
2016-06-144417-021-12202.19 ppm
2016-07-134417-010-0850ND
2016-08-014417-019-09455.38 ppm
2016-11-034417-019-10055.31 ppm
2017-02-084417-017-08402.64 ppm
2017-02-084417-018-08153.47 ppm
2017-02-084417-019-09505.06 ppm
2017-02-084417-024-09103.99 ppm
2017-02-084417-029-09300.700 ppm
2017-02-134417-010-0820ND
2017-02-134417-014-1100ND
2017-02-134417-016-09051.42 ppm
2017-02-234417-018-08003.56 ppm
2017-03-204417-007-0850ND
2017-05-104417-018-11303.54 ppm
2017-05-104417-019-09405.15 ppm
2017-05-104417-021-11501.94 ppm
2017-05-104417-023-09101.85 ppm
2017-08-084417-019-09105.27 ppm
2017-11-074417-019-10305.25 ppm
2018-02-124417-007-0825ND
2018-02-124417-010-0805ND
2018-02-124417-014-0915ND
2018-02-124417-016-09401.35 ppm
2018-02-124417-017-11503.16 ppm
2018-02-124417-019-10055.17 ppm
2018-02-124417-021-10552.12 ppm
2018-02-124417-024-11154.68 ppm
2018-02-124417-029-10300.830 ppm
2018-05-104417-017-14202.94 ppm
2018-05-104417-017-14252.99 ppm
2018-05-104417-019-13055.22 ppm
2018-05-104417-021-13302.20 ppm
2018-05-104417-024-13504.15 ppm
2018-05-104417-024-14004.15 ppm
2018-05-104417-029-12550.840 ppm
2018-05-104417-029-13000.840 ppm
2018-05-214417-010-0810ND
2018-05-214417-014-1015ND
2018-05-214417-014-1020ND
2018-05-214417-016-09501.32 ppm
2018-05-214417-016-10001.32 ppm
2018-05-214417-018-10353.72 ppm
2018-06-064417-023-09552.67 ppm
2018-07-264417-019-09105.27 ppm
2018-07-264417-023-09502.58 ppm
2018-10-094417-019-10055.03 ppm
2019-02-144417-010-1055ND
2019-02-144417-018-09403.49 ppm
2019-02-144417-019-10004.80 ppm
2019-02-144417-023-10252.25 ppm
2019-02-144417-024-09204.37 ppm
2019-03-044417-016-09201.47 ppm
2019-03-074417-014-1110ND
2019-03-184417-029-09100.870 ppm
2019-04-304417-017-08352.96 ppm
2019-04-304417-019-10104.93 ppm
2019-04-304417-021-09152.20 ppm
2019-05-064417-007-0825ND
2019-07-094417-010-0730ND
2019-07-244417-019-10054.90 ppm
2019-10-214417-019-10304.96 ppm