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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

City of Scottsdale

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.

 

118

Samples

0

Samples exceeding legal limit (MCL)

102

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.27 ppm1916ND - 5.20 ppm
20131.20 ppm2118ND - 4.80 ppm
20141.36 ppm2018ND - 5.00 ppm
20151.71 ppm2019ND - 6.70 ppm
20161.28 ppm1914ND - 7.00 ppm
20171.54 ppm1917ND - 5.00 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
2012-03-07AB296910.300 ppm
2012-03-07AB296934.10 ppm
2012-03-07AB296940.300 ppm
2012-03-07AB296950.600 ppm
2012-03-13AB29780I0.600 ppm
2012-04-09AB303860.400 ppm
2012-04-09AB303870.800 ppm
2012-04-10AB304254.10 ppm
2012-05-31AB31398ND
2012-05-31AB314000.200 ppm
2012-07-31AB328705.20 ppm
2012-09-12AB33991ND
2012-09-12AB33994ND
2012-09-13AB340590.600 ppm
2012-11-13AB355795.20 ppm
2012-11-19AB357130.300 ppm
2012-11-202111591-010.350 ppm
2012-12-13AB362210.500 ppm
2012-12-21PVL1489-010.570 ppm
2013-01-08AB36631I0.500 ppm
2013-01-08AB36647I1.20 ppm
2013-01-18AB36918I0.200 ppm
2013-02-27AB37656I0.300 ppm
2013-02-27AB37658I4.80 ppm
2013-03-12AB37901I0.300 ppm
2013-03-18AB38006I0.400 ppm
2013-03-19AB38028I0.500 ppm
2013-04-16AB385500.600 ppm
2013-05-29AB392771.000 ppm
2013-06-03AB393840.300 ppm
2013-06-04AB39410ND
2013-06-06AB394990.500 ppm
2013-06-10AB395540.700 ppm
2013-06-20AB397764.40 ppm
2013-08-20AB413404.40 ppm
2013-08-20AB41342ND
2013-09-04AB41797ND
2013-11-06AB436170.300 ppm
2013-11-06AB436184.70 ppm
2013-11-21AB440190.200 ppm
2014-02-05AB45659I0.200 ppm
2014-02-05AB45660I4.00 ppm
2014-02-05AB45661I1.10 ppm
2014-02-05AB45662I0.300 ppm
2014-02-11AB45852I0.500 ppm
2014-02-12AB45865I0.800 ppm
2014-02-13AB45912I0.600 ppm
2014-02-13AB45913I0.500 ppm
2014-03-13AB46644I0.900 ppm
2014-03-20AB468400.400 ppm
2014-05-19AB482450.200 ppm
2014-06-124061175-013.71 ppm
2014-06-124061176-01ND
2014-08-05AB499090.200 ppm
2014-08-05AB49916I4.80 ppm
2014-08-064080551-02TND
2014-08-27AB50551I1.80 ppm
2014-11-10AB524091.90 ppm
2014-11-18AB526845.00 ppm
2014-12-16AB532800.200 ppm
2015-01-13AB538300.600 ppm
2015-01-13AB538310.900 ppm
2015-01-26AB541804.90 ppm
2015-02-02AB543930.600 ppm
2015-03-04AB55247I0.400 ppm
2015-03-10AB553916.70 ppm
2015-05-19AB570860.300 ppm
2015-05-19AB570906.40 ppm
2015-06-15AB57584ND
2015-07-22AB58586I6.40 ppm
2015-07-23AB585930.400 ppm
2015-07-28AB58723I1.70 ppm
2015-08-19AB593560.700 ppm
2015-08-19AB593620.900 ppm
2015-09-03AB598270.300 ppm
2015-09-22AB603000.400 ppm
2015-10-05AB605480.400 ppm
2015-11-11AB61680I1.40 ppm
2015-12-07AB62200I0.300 ppm
2015-12-10AB623120.500 ppm
2016-01-12AB62917J0.200 ppm
2016-02-01AB633700.500 ppm
2016-02-10AB636460.300 ppm
2016-02-11AB636721.000 ppm
2016-03-07AB64246J6.00 ppm
2016-03-07AB64247J0.300 ppm
2016-03-24AB647510.500 ppm
2016-05-12AB660380.300 ppm
2016-06-09AB666605.80 ppm
2016-06-09AB66662ND
2016-08-22AB68510I7.00 ppm
2016-08-25AB68595I1.000 ppm
2016-08-31AB68676ND
2016-08-31AB68679IND
2016-09-14AB69048I0.600 ppm
2016-09-22AB69265I0.400 ppm
2016-10-03AB69504ND
2016-12-06AB71090IND
2016-12-27AB715820.400 ppm
2017-01-23AB72209T1.10 ppm
2017-01-31AB72396TND
2017-01-31AB72398T5.00 ppm
2017-03-13AB73529T2.00 ppm
2017-04-11AB742810.500 ppm
2017-04-18AZ744560.500 ppm
2017-05-03AB749520.500 ppm
2017-05-03AB749540.600 ppm
2017-05-08AB751260.300 ppm
2017-05-11AB752520.300 ppm
2017-05-25AB755600.300 ppm
2017-06-29AB765294.40 ppm
2017-06-29AB765301.40 ppm
2017-07-10AB767694.40 ppm
2017-07-10AB767701.30 ppm
2017-07-31AB77482ND
2017-10-09AB795970.200 ppm
2017-10-10AB796271.70 ppm
2017-11-01AB803424.80 ppm