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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Hartland Waterworks

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.00400 ppm51ND - 0.0200 ppm
2015ND10ND
2016ND10ND
2017ND50ND
2018N/A00N/A
2019ND10ND

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
2014-01-222961271-72ND
2014-02-062968595-96ND
2014-02-242979694-950.0200 ppm
2014-02-262981933-34ND
2014-02-272982697-98ND
2015-02-043181049,53ND
2016-01-28903267ND
2017-02-07972671ND
2017-02-07972674ND
2017-02-13973353ND
2017-02-13973350ND
2017-04-18983888ND
2019-03-061108215ND