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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

City of Hanford

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

 

63

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015ND250ND
2016ND10ND
2017ND130ND
2018ND230ND
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
2015-03-105810-038-0955ND
2015-03-105810-041-1257ND
2015-03-105810-043-1043ND
2015-03-105810-039-0805ND
2015-03-105810-042-1320ND
2015-03-105810-033-0930ND
2015-03-105810-040-1017ND
2015-03-115810-026-0916ND
2015-03-115810-037-1031ND
2015-03-115810-028-1119ND
2015-03-115810-031-1315ND
2015-03-115810-036-1018ND
2015-12-145810-040-1125ND
2015-12-145810-033-0840ND
2015-12-145810-034-1230ND
2015-12-145810-039-0945ND
2015-12-145810-036-1220ND
2015-12-145810-038-0815ND
2015-12-145810-037-1200ND
2015-12-145810-041-1420ND
2015-12-145810-042-1045ND
2015-12-145810-043-1400ND
2015-12-155810-031-1055ND
2015-12-155810-028-1145ND
2015-12-155810-026-1018ND
2016-03-105810-026-1300ND
2017-04-195810-040-1145ND
2017-04-195810-037-0726ND
2017-04-195810-039-0913ND
2017-04-195810-041-1253ND
2017-04-195810-042-1241ND
2017-04-195810-038-1046ND
2017-04-195810-043-0836ND
2017-04-195810-026-0944ND
2017-04-195810-031-1131ND
2017-04-195810-033-1056ND
2017-04-195810-036-0739ND
2017-04-195810-028-0814ND
2017-04-195810-034-0755ND
2018-05-015810-041-0915ND
2018-05-015810-031-1250ND
2018-05-015810-028-1148ND
2018-05-015810-040-1120ND
2018-05-015810-033-0828ND
2018-05-015810-042-1028ND
2018-05-015810-039-0943ND
2018-05-015810-034-0757ND
2018-05-015810-038-0835ND
2018-05-015810-036-0745ND
2018-05-015810-043-0930ND
2018-05-025810-026-0850ND
2018-05-025810-037-0735ND
2018-12-185810-031-1015ND
2018-12-185810-033-1120ND
2018-12-185810-042-0820ND
2018-12-185810-043-0935ND
2018-12-205810-041-0835ND
2018-12-205810-028-0930ND
2018-12-205810-040-0855ND
2018-12-205810-034-1015ND
2018-12-205810-036-1045ND
2018-12-205810-037-1000ND
2019-05-095810-039-1100ND