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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Fcwwd #41/shaver Lake

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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94

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND300ND
2016ND130ND
2017ND10ND
2018ND320ND
20190.0487 ppm151ND - 0.730 ppm

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
2014-08-072371-049-1205ND
2014-08-072371-048-1255ND
2014-08-072371-047-1110ND
2015-04-145802-037-1145ND
2015-04-145802-038-1210ND
2015-04-145802-040-1240ND
2015-04-145802-041-1230ND
2015-04-145802-042-1220ND
2015-04-145802-043-1250ND
2015-04-145802-044-1300ND
2015-04-145802-046-1100ND
2015-04-145802-056-0900ND
2015-04-145802-057-0920ND
2015-04-145802-058-0940ND
2015-04-145802-059-1020ND
2015-04-145802-065-1040ND
2015-04-145802-066-1000ND
2015-06-045802-005-0930ND
2015-06-045802-001-0800ND
2015-06-045802-004-0900ND
2015-06-175802-062-0930ND
2015-06-175802-034-1030ND
2015-06-175802-033-0850ND
2015-06-185802-009-1030ND
2015-06-245802-011-1000ND
2015-06-245802-012-0930ND
2015-06-255802-014-0945ND
2015-06-255802-008-0400ND
2015-06-255802-015-1030ND
2015-06-305802-035-0930ND
2015-06-305802-006-0830ND
2015-07-015802-036-0830ND
2015-07-015802-042-0930ND
2016-06-165802-058-0930ND
2016-06-165802-056-1130ND
2016-06-165802-057-1030ND
2016-08-175802-065-1015ND
2016-08-175802-066-0845ND
2016-08-175802-059-0930ND
2016-08-245802-044-1030ND
2016-08-245802-046-0930ND
2016-09-275802-041-1115ND
2016-09-275802-038-1015ND
2016-10-125802-040-1030ND
2016-11-155802-043-1000ND
2016-12-155802-037-0830ND
2017-05-025802-002-1100ND
2018-03-125802-001-1055ND
2018-03-125802-005-1119ND
2018-03-125802-008-1200ND
2018-03-125802-014-1310ND
2018-03-125802-015-1341ND
2018-03-125802-033-1239ND
2018-03-145802-034-0320ND
2018-03-145802-004-1053ND
2018-03-145802-062-1234ND
2018-03-165802-011-1212ND
2018-03-165802-006-1041ND
2018-03-165802-035-1334ND
2018-03-165802-036-1304ND
2018-03-165802-012-1225ND
2018-03-195802-042-1207ND
2018-03-195802-009-1332ND
2018-04-095802-033-1159ND
2018-04-095802-001-1058ND
2018-04-095802-004-1113ND
2018-04-095802-005-1117ND
2018-04-115802-008-1212ND
2018-04-115802-006-1318ND
2018-04-135802-062-1313ND
2018-04-135802-014-1404ND
2018-04-135802-015-1040ND
2018-04-135802-034-1345ND
2018-04-185802-035-1037ND
2018-04-185802-011-1135ND
2018-04-185802-012-1148ND
2018-04-185802-036-1054ND
2018-04-205802-009-1329ND
2018-04-205802-042-1155ND
2019-03-275802-044-10200.730 ppm
2019-06-195802-058-0855ND
2019-06-195802-057-0910ND
2019-06-195802-059-0955ND
2019-06-195802-056-0926ND
2019-06-195802-046-1000ND
2019-06-195802-044-1320ND
2019-06-195802-065-0940ND
2019-06-195802-043-1310ND
2019-06-195802-040-1115ND
2019-06-195802-066-0957ND
2019-06-195802-037-1030ND
2019-06-195802-041-1120ND
2019-06-265802-066-1230ND
2019-12-185802-038-0933ND