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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

California Water Service Company - Dixon

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND60ND
2016ND80ND
2017ND100ND
2018ND60ND
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
2014-05-205810-003-1142ND
2015-02-115810-006-1003ND
2015-02-115810-002-1343ND
2015-05-115810-005-1356ND
2015-12-165810-004-0946ND
2015-12-165810-009-0855ND
2015-12-165810-004-0945ND
2016-03-145810-008-1402ND
2016-06-139590-020-1700ND
2016-06-225810-004-1419ND
2016-06-225810-009-1145ND
2016-06-225810-007-1009ND
2016-06-225810-003-1103ND
2016-06-225810-006-1545ND
2016-09-125810-017-1415ND
2017-06-275810-007-1401ND
2017-06-275810-006-1504ND
2017-06-275810-009-1530ND
2017-06-275810-004-1410ND
2017-06-275810-003-1150ND
2017-09-125810-017-1454ND
2017-12-275810-007-0952ND
2017-12-275810-006-1444ND
2017-12-275810-004-1200ND
2017-12-275810-003-1107ND
2018-06-195810-007-1000ND
2018-06-195810-006-1100ND
2018-06-195810-004-1015ND
2018-06-195810-009-1140ND
2018-06-195810-003-1450ND
2018-09-135810-002-1227ND
2019-03-205810-008-1352ND
2019-06-255810-006-1122ND
2019-06-255810-007-1414ND
2019-06-255810-004-1330ND
2019-06-255810-009-1030ND
2019-06-255810-003-0955ND