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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

City of Coeur D Alene

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

 

94

Samples

0

Samples exceeding legal limit (MCL)

80

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.885 ppm1311ND - 2.28 ppm
20150.968 ppm2220ND - 1.93 ppm
20160.794 ppm1411ND - 1.90 ppm
20170.617 ppm1512ND - 1.18 ppm
20181.01 ppm1615ND - 2.46 ppm
20190.768 ppm1411ND - 2.07 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
2014-01-27I0127141300.789 ppm
2014-05-12N1504470.620 ppm
2014-05-13N1504641.90 ppm
2014-05-27N150829ND
2014-06-02I0602141000.546 ppm
2014-06-02I0602141020.541 ppm
2014-06-02I060214991.10 ppm
2014-06-02N1510190.890 ppm
2014-06-02N1510181.46 ppm
2014-06-03N151050ND
2014-06-03N1510490.610 ppm
2014-06-03N1510512.28 ppm
2014-07-08N1521920.770 ppm
2015-01-16N1580141.93 ppm
2015-02-17N1587090.670 ppm
2015-03-18I0318151000.541 ppm
2015-03-18I0318151300.729 ppm
2015-04-08N1599261.53 ppm
2015-05-04N1605461.44 ppm
2015-05-18N1609690.844 ppm
2015-05-18N1609681.55 ppm
2015-05-18N160970ND
2015-05-18N1609710.548 ppm
2015-05-18N160972ND
2015-06-08N1615941.59 ppm
2015-06-08N1615931.74 ppm
2015-06-08N1615921.38 ppm
2015-06-08N1615910.520 ppm
2015-06-08N1616150.580 ppm
2015-07-14N1625871.40 ppm
2015-07-15I0715151300.795 ppm
2015-07-15I0715151000.502 ppm
2015-10-01N1652081.37 ppm
2015-11-18I1118151300.928 ppm
2015-11-18I1118151000.704 ppm
2016-03-23N0323161300.966 ppm
2016-03-23N0323161000.486 ppm
2016-05-02I1706221.22 ppm
2016-05-02N1706240.870 ppm
2016-05-02N1706230.510 ppm
2016-05-03I1706621.90 ppm
2016-05-03I170666ND
2016-05-13I170990ND
2016-05-13I170989ND
2016-06-07I1716931.64 ppm
2016-06-07I1716940.580 ppm
2016-06-28I1723671.54 ppm
2016-07-20N0720161300.894 ppm
2016-07-20N0720161000.503 ppm
2017-03-15I1703150530031300.857 ppm
2017-03-15I1703150530021000.553 ppm
2017-06-07N1828440.570 ppm
2017-06-07N1828430.660 ppm
2017-06-07N1828421.07 ppm
2017-06-07N1828410.900 ppm
2017-06-07N1828400.690 ppm
2017-06-07N1828391.18 ppm
2017-06-13N182958ND
2017-06-23N183397ND
2017-06-26N1834430.880 ppm
2017-06-27N1834900.780 ppm
2017-06-27N183489ND
2017-07-19I1707190520031300.450 ppm
2017-07-19I1707190520021000.672 ppm
2018-03-14I1803140530031.52 ppm
2018-03-14I1803140530020.657 ppm
2018-07-03N201807003750.950 ppm
2018-07-03N201807003720.520 ppm
2018-07-03N201807003710.950 ppm
2018-07-03N201807003731.02 ppm
2018-07-03N201807003762.46 ppm
2018-07-03N201807003771.49 ppm
2018-07-03N20180700370.790 ppm
2018-07-12N195272ND
2018-07-12N1952711.52 ppm
2018-07-18I1807180590030.800 ppm
2018-07-18I1807180590020.974 ppm
2018-07-27N1957550.830 ppm
2018-11-07I1811070830020.969 ppm
2018-11-07I1811070830030.722 ppm
2019-03-13I1903130550020.727 ppm
2019-05-23I2041871.55 ppm
2019-05-23I2041861.85 ppm
2019-05-23I2041892.07 ppm
2019-05-29I204291ND
2019-05-29I2042870.820 ppm
2019-05-29I2042880.450 ppm
2019-06-03I2043610.452 ppm
2019-06-03I2043600.582 ppm
2019-06-03I2043620.731 ppm
2019-07-17I1907170530030.824 ppm
2019-07-17I1907170530020.702 ppm
2019-09-05I208218ND
2019-10-07N209673ND