Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Nitrate

Averydale Mutual Water Company

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.437 ppm32ND - 0.836 ppm
20130.621 ppm43ND - 1.22 ppm
20140.758 ppm770.474 ppm - 1.29 ppm
20150.937 ppm440.497 ppm - 1.42 ppm
20160.810 ppm440.430 ppm - 1.30 ppm
20170.904 ppm550.460 ppm - 1.50 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
2012-08-143761-006-12450.474 ppm
2012-08-143761-004-1235ND
2012-08-143761-003-12300.836 ppm
2013-05-143761-001-1300ND
2013-06-043761-006-14000.678 ppm
2013-06-043761-004-13320.587 ppm
2013-08-133761-003-10221.22 ppm
2014-05-203761-006-13250.633 ppm
2014-05-203761-004-13500.497 ppm
2014-05-203761-003-13461.24 ppm
2014-05-203761-001-13190.474 ppm
2014-07-153761-006-14150.633 ppm
2014-07-153761-003-13341.29 ppm
2014-07-153761-001-13570.542 ppm
2015-02-173761-004-14141.42 ppm
2015-10-133761-006-15320.610 ppm
2015-10-133761-003-14421.22 ppm
2015-10-133761-001-15150.497 ppm
2016-02-163761-004-14120.860 ppm
2016-07-193761-006-14400.650 ppm
2016-07-193761-003-14011.30 ppm
2016-07-193761-001-14450.430 ppm
2017-02-213761-004-13430.750 ppm
2017-07-183761-006-12530.710 ppm
2017-07-183761-004-12251.10 ppm
2017-07-183761-003-12151.50 ppm
2017-07-183761-001-12470.460 ppm