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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Lihue-Kapaa

Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.

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109

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
2015ND200ND
2016ND180ND
2017ND160ND
2018ND180ND
2019ND170ND

ppm = parts per million

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 1 ppm

The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.

ppm = parts per million

All test results

Date Lab ID Result
2014-01-21C14-01-0003ND
2014-01-21C14-01-0004ND
2014-01-21C14-01-0005ND
2014-01-21C14-01-0006ND
2014-01-21C14-01-0007ND
2014-01-21C14-01-0008ND
2014-01-21C14-01-0009ND
2014-01-21C14-01-0010ND
2014-02-03C14-02-0001ND
2014-02-03C14-02-0002ND
2014-02-03C14-02-0003ND
2014-02-03C14-02-0004ND
2014-04-28C14-04-0213ND
2014-04-28C14-04-0214ND
2014-04-28C14-04-0215ND
2014-04-28C14-04-0216ND
2014-04-28C14-04-0217ND
2014-04-28C14-04-0218ND
2014-04-28C14-04-0219ND
2014-04-28C14-04-0220ND
2015-01-20C15-01-0006ND
2015-01-20C15-01-0007ND
2015-01-20C15-01-0008ND
2015-01-20C15-01-0009ND
2015-01-21C15-01-0024ND
2015-01-21C15-01-0025ND
2015-01-21C15-01-0026ND
2015-01-21C15-01-0027ND
2015-01-21C15-01-0028ND
2015-03-16C15-03-0021ND
2015-03-16C15-03-0022ND
2015-03-16C15-03-0023ND
2015-03-16C15-03-0024ND
2015-03-18C15-03-0065ND
2015-03-18C15-03-0066ND
2015-03-18C15-03-0067ND
2015-03-18C15-03-0068ND
2015-03-18C15-03-0069ND
2015-03-18C15-03-0070ND
2015-09-10201509120214ND
2016-03-07ND
2016-03-07ND
2016-03-07ND
2016-03-07ND
2016-03-09ND
2016-03-09ND
2016-03-09ND
2016-03-09ND
2016-03-21ND
2016-03-21ND
2016-03-21ND
2016-03-21ND
2016-03-22ND
2016-03-22ND
2016-03-22ND
2016-04-04ND
2016-04-04ND
2016-04-04ND
2017-01-23ND
2017-01-23ND
2017-01-23ND
2017-01-23ND
2017-01-23ND
2017-01-25ND
2017-01-25ND
2017-01-25ND
2017-02-13ND
2017-02-13ND
2017-02-13ND
2017-02-15ND
2017-02-15ND
2017-02-15ND
2017-02-15ND
2017-02-15ND
2018-01-16C18-01-0023ND
2018-01-16C18-01-0024ND
2018-01-16C18-01-0025ND
2018-01-16C18-01-0026ND
2018-01-17C18-01-0027ND
2018-01-17C18-01-0028ND
2018-04-30C18-05-0005ND
2018-04-30C18-05-0012ND
2018-04-30C18-05-0003ND
2018-04-30C18-05-0004ND
2018-04-30C18-05-0008ND
2018-04-30C18-05-0007ND
2018-04-30C18-05-0011ND
2018-04-30C18-05-0010ND
2018-04-30C18-05-0009ND
2018-04-30C18-05-0006ND
2018-07-12201807000000ND
2018-07-12201807130880ND
2019-02-13C19-02-0141ND
2019-02-13C19-02-0142ND
2019-02-13C19-02-0143ND
2019-02-13C19-02-0144ND
2019-02-13C19-02-0145ND
2019-03-11C19-03-0027ND
2019-03-11C19-03-0028ND
2019-03-11C19-03-0029ND
2019-03-11C19-03-0030ND
2019-03-11C19-03-0031ND
2019-03-12C19-03-0052ND
2019-03-12C19-03-0045ND
2019-03-12C19-03-0054ND
2019-03-12C19-03-0049ND
2019-03-12C19-03-0053ND
2019-03-12C19-03-0051ND
2019-03-12C19-03-0050ND