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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

City of Santa Barbara Water Department

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND30ND
2014ND50ND
2015ND120ND
2016ND100ND
2017ND70ND

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
2012-07-179590-004-1056ND
2012-07-189590-005-0923ND
2012-07-189590-015-1031ND
2012-07-189590-042-1203ND
2012-07-189590-042-1148ND
2012-07-189590-015-1053ND
2012-12-119590-035-1018ND
2012-12-119590-035-1108ND
2013-04-299590-053-0947ND
2013-08-189590-031-1605ND
2013-10-159590-004-0835ND
2014-10-153774-035-1143ND
2014-10-219590-035-0931ND
2014-10-219590-015-0843ND
2014-10-219590-042-0758ND
2014-10-229590-004-1014ND
2015-01-073774-035-1009ND
2015-04-083774-035-0935ND
2015-07-073774-035-0837ND
2015-09-099590-055-1515ND
2015-10-209590-035-0956ND
2015-10-219590-054-1002ND
2015-10-219590-004-0947ND
2015-11-109590-005-1050ND
2015-11-109590-031-1107ND
2015-11-109590-053-1040ND
2015-11-109590-042-0920ND
2015-11-109590-035-1006ND
2016-04-043774-035-0851ND
2016-05-103774-015-1331ND
2016-07-133774-035-0930ND
2016-11-029590-031-1120ND
2016-11-029590-005-1059ND
2016-11-029590-053-1152ND
2016-11-029590-035-0916ND
2016-11-029590-004-0838ND
2016-11-029590-042-1015ND
2016-12-073774-055-1013ND
2017-05-189590-058-1734ND
2017-11-079590-004-0955ND
2017-11-089590-053-0939ND
2017-11-149590-035-0930ND
2017-11-149590-042-0848ND
2017-11-289590-035-0928ND
2017-11-289590-042-0958ND