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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Hynes Estates Mutual Water Company

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.

MORE ABOUT THIS CONTAMINANT

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND50ND
2016ND50ND
2017ND40ND
2018ND40ND
2019ND60ND

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
2014-01-154417-002-1300ND
2014-01-154417-001-1235ND
2014-04-014417-001-1350ND
2014-07-024417-001-1300ND
2014-10-224417-001-1010ND
2015-01-154417-002-0940ND
2015-03-184417-001-1120ND
2015-04-204417-001-1120ND
2015-08-034417-001-1115ND
2015-10-014417-001-0915ND
2016-01-134417-001-1115ND
2016-01-134417-002-1040ND
2016-04-044417-001-1025ND
2016-07-054417-001-0930ND
2016-10-064417-001-1210ND
2017-01-044417-001-1030ND
2017-04-134417-001-1230ND
2017-07-254417-001-0905ND
2017-10-264417-001-0840ND
2018-01-044417-001-0900ND
2018-04-164417-001-1115ND
2018-07-034417-001-0935ND
2018-10-094417-001-1015ND
2019-01-084417-001-1130ND
2019-04-014417-001-0840ND
2019-07-014417-001-1000ND
2019-07-104417-005-1130ND
2019-10-024417-001-1000ND
2019-11-074417-005-1310ND