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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

NJ American Water - Western

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

86

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.753 ppm155ND - 5.11 ppm
20130.309 ppm155ND - 2.12 ppm
20140.432 ppm144ND - 2.23 ppm
20150.416 ppm146ND - 2.08 ppm
20160.380 ppm145ND - 1.75 ppm
20170.312 ppm148ND - 1.92 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL) 10 ppm

ppm = parts per million

All test results

Date Lab ID Result
2012-01-12157772011.18 ppm
2012-03-14157757015.11 ppm
2012-07-1015773501ND
2012-07-16157816010.840 ppm
2012-07-1715783801ND
2012-08-0115781401ND
2012-08-0115781801ND
2012-08-0115782101ND
2012-08-0115783601ND
2012-09-0615777401ND
2012-09-1015780201ND
2012-09-1315773701ND
2012-09-20157829011.95 ppm
2012-09-2420191001ND
2012-09-27157784012.21 ppm
2013-01-09206913011.09 ppm
2013-02-12206986010.400 ppm
2013-06-0620699101ND
2013-06-1720690101ND
2013-06-1720699401ND
2013-06-1820695001ND
2013-06-1820690001ND
2013-06-18206958010.01000 ppm
2013-06-18206936012.12 ppm
2013-06-2620691901ND
2013-06-2620691701ND
2013-06-2620696001ND
2013-07-01206957011.02 ppm
2013-07-1620699201ND
2013-08-1220695501ND
2014-01-08245663011.14 ppm
2014-06-1224566701ND
2014-06-1224565201ND
2014-06-1224569401ND
2014-06-1224566901ND
2014-06-1224573001ND
2014-06-3024572701ND
2014-07-2424569001ND
2014-07-24266971010.860 ppm
2014-07-30245686011.82 ppm
2014-07-3024572801ND
2014-07-3124569101ND
2014-07-3124569601ND
2014-09-22245722012.23 ppm
2015-01-12278637011.09 ppm
2015-01-28278653011.85 ppm
2015-01-2927865801ND
2015-01-2927866101ND
2015-01-2927865901ND
2015-03-2628343601ND
2015-03-2628341001ND
2015-07-23297296010.790 ppm
2015-07-2729732201ND
2015-07-2829732101ND
2015-07-2829732401ND
2015-07-30297270010.01000 ppm
2015-07-30297254010.01000 ppm
2015-09-24278682012.08 ppm
2016-01-04311354011.000 ppm
2016-01-20311397011.62 ppm
2016-01-2031137501ND
2016-03-1731542301ND
2016-03-1731543801ND
2016-06-1431818401ND
2016-07-1232853501ND
2016-07-1232850301ND
2016-07-1232853401ND
2016-07-12328517010.930 ppm
2016-10-0533391101ND
2016-10-06333924010.0200 ppm
2016-10-1133391001ND
2016-11-08311369011.75 ppm
2017-01-05344600011.26 ppm
2017-01-09344619011.92 ppm
2017-03-0634462601ND
2017-03-0735048701ND
2017-03-07350450010.0200 ppm
2017-03-3035355401ND
2017-06-2736533601ND
2017-07-2536527701ND
2017-07-25369695010.820 ppm
2017-07-25369694010.320 ppm
2017-07-25353529010.01000 ppm
2017-08-2937191101ND
2017-08-30371910010.01000 ppm
2017-08-30371936010.01000 ppm