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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

Vernon Water Department

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

 

41

Samples

0

Samples exceeding legal limit (MCL)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.139 ppm72ND - 0.520 ppm
20150.0753 ppm61ND - 0.452 ppm
20160.0683 ppm61ND - 0.410 ppm
20170.414 ppm73ND - 1.80 ppm
20180.0920 ppm51ND - 0.460 ppm
20190.619 ppm106ND - 2.00 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
2014-02-132706-011-0815ND
2014-02-132706-005-08000.520 ppm
2014-02-202706-006-0825ND
2014-05-292706-014-0815ND
2014-10-302706-009-07500.452 ppm
2014-12-112706-010-0820ND
2014-12-112706-009-0805ND
2015-02-122706-005-09350.452 ppm
2015-02-122706-011-0950ND
2015-02-192706-006-0900ND
2015-05-212706-014-0810ND
2015-06-302706-013-0730ND
2015-07-162706-013-0840ND
2016-02-259588-011-0935ND
2016-02-259588-006-0920ND
2016-05-269588-010-0850ND
2016-05-269588-014-0920ND
2016-08-299588-013-0955ND
2016-08-299588-009-09450.410 ppm
2017-02-239588-006-0915ND
2017-02-239588-011-0925ND
2017-05-249588-010-09050.620 ppm
2017-05-249588-014-0955ND
2017-08-249588-005-09201.80 ppm
2017-08-249588-009-10150.480 ppm
2017-08-249588-013-1010ND
2018-02-229588-006-0955ND
2018-02-229588-011-1010ND
2018-05-249588-014-0950ND
2018-08-309588-013-0900ND
2018-08-309588-009-09200.460 ppm
2019-01-149588-010-10170.520 ppm
2019-02-289588-006-0925ND
2019-05-099588-010-10050.710 ppm
2019-05-239588-014-1050ND
2019-07-179588-010-09200.680 ppm
2019-08-209588-013-0920ND
2019-08-209588-010-08450.680 ppm
2019-09-309588-005-13002.00 ppm
2019-11-279588-010-0825ND
2019-11-279588-005-08151.60 ppm