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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

Charlotte Water

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.

 

104

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND100ND
2013ND140ND
2014ND200ND
2015ND200ND
2016ND200ND
2017ND200ND

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
2012-02-09AE17669-NND
2012-02-09AE17670-NND
2012-02-09AE17671-NND
2012-02-09AE17672-NND
2012-02-09AE17673-NND
2012-08-07AE36181-NND
2012-08-07AE36182-NND
2012-08-07AE36183-NND
2012-08-07AE36184-NND
2012-08-08AE36185-NND
2013-02-14AE55318-NND
2013-02-14AE55319-NND
2013-02-14AE55322-NND
2013-05-14AE64330-NND
2013-05-14AE64331-NND
2013-05-14AE64334-NND
2013-08-19AE73826-NND
2013-08-19AE73825-NND
2013-08-19AE73824-NND
2013-11-13AE82850-NND
2013-11-13AE82851-NND
2013-11-13AE82854-NND
2013-11-13AE82852-NND
2013-11-13AE82853-NND
2014-02-19AE92460-NND
2014-02-19AE92461-NND
2014-02-19AE92462-NND
2014-02-19AE92463-NND
2014-02-19AE92464-NND
2014-05-13AF01538-NND
2014-05-13AF01539-NND
2014-05-13AF01535-NND
2014-05-13AF01536-NND
2014-05-13AF01537-NND
2014-08-07AF10203-NND
2014-08-07AF10204-NND
2014-08-07AF10207-NND
2014-08-07AF10205-NND
2014-08-07AF10206-NND
2014-12-03AF22248-NND
2014-12-03AF22249-NND
2014-12-03AF22245-NND
2014-12-03AF22250-NND
2014-12-03AF22251-NND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-24ND
2015-06-24ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2016-02-03AF65970_NND
2016-02-03AF65969_NND
2016-02-03AF65972_NND
2016-02-03AF65968_NND
2016-02-03AF65971_NND
2016-05-04AF76709_NND
2016-05-04AF76704_NND
2016-05-04AF76707_NND
2016-05-04AF76708_NND
2016-05-04AF76703_NND
2016-08-03AF87888_NO2NO3ND
2016-08-03AF87872_NO2NO3ND
2016-08-03AF87877_NO2NO3ND
2016-08-03AF87874_NO2NO3ND
2016-08-03AF87876_NO2NO3ND
2016-11-02AF98937_NND
2016-11-02AF98935_NND
2016-11-02AF98938_NND
2016-11-02AF98939_NND
2016-11-02AF98936_NND
2017-02-01AG08741_NND
2017-02-01AG08738_NND
2017-02-01AG08740_NND
2017-02-01AG08739_NND
2017-02-01AG08742_NND
2017-05-04AG19793_NND
2017-05-04AG19792_NND
2017-05-04AG19796_NND
2017-05-08AG20107_NND
2017-05-08AG20108_NND
2017-08-01AG30317_NND
2017-08-01AG30319_NND
2017-08-01AG30321_NND
2017-08-01AG30318_NND
2017-08-01AG30320_NND
2017-11-01AG41981_NND
2017-11-01AG41978_NND
2017-11-01AG41980_NND
2017-11-01AG41977_NND
2017-11-01AG41979_NND