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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

City of Santa Barbara Water Department

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

 

61

Samples

0

Samples exceeding legal limit (MCL)

46

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.25 ppm98ND - 5.87 ppm
20132.07 ppm86ND - 6.33 ppm
20142.59 ppm54ND - 6.01 ppm
20152.68 ppm1812ND - 6.87 ppm
20162.88 ppm1210ND - 6.80 ppm
20172.65 ppm96ND - 7.10 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Lab ID Result
2012-07-179590-004-1056ND
2012-07-189590-042-11480.994 ppm
2012-07-189590-005-09230.745 ppm
2012-07-189590-015-10310.904 ppm
2012-07-189590-015-10530.881 ppm
2012-07-189590-042-12030.971 ppm
2012-12-119590-035-11085.87 ppm
2012-12-119590-035-10185.87 ppm
2012-12-273774-035-10454.02 ppm
2013-04-299590-053-09471.72 ppm
2013-07-163774-035-08436.33 ppm
2013-08-023774-005-08591.52 ppm
2013-08-189590-031-1605ND
2013-10-159590-004-0835ND
2013-10-153774-035-11095.31 ppm
2013-10-153774-042-10220.800 ppm
2013-10-153774-015-11400.861 ppm
2014-10-153774-035-11436.01 ppm
2014-10-219590-035-09315.42 ppm
2014-10-219590-042-07580.926 ppm
2014-10-219590-015-08430.587 ppm
2014-10-229590-004-1014ND
2015-01-073774-035-10096.60 ppm
2015-04-083774-035-09356.48 ppm
2015-07-073774-035-08376.87 ppm
2015-09-099590-055-1515ND
2015-09-159590-055-0826ND
2015-09-169590-004-1134ND
2015-10-209590-035-09565.87 ppm
2015-10-219590-004-0947ND
2015-10-219590-054-1002ND
2015-11-109590-053-10401.78 ppm
2015-11-109590-042-09201.000 ppm
2015-11-109590-042-09201.06 ppm
2015-11-109590-035-10065.87 ppm
2015-11-109590-031-1107ND
2015-11-109590-053-10401.80 ppm
2015-11-109590-005-10502.48 ppm
2015-11-109590-035-10066.00 ppm
2015-11-109590-005-10502.50 ppm
2016-01-133774-035-08524.88 ppm
2016-04-073774-035-08516.68 ppm
2016-05-103774-015-13310.390 ppm
2016-07-133774-035-09304.76 ppm
2016-10-113774-035-10156.80 ppm
2016-11-029590-031-1120ND
2016-11-029590-005-10592.30 ppm
2016-11-029590-053-11521.40 ppm
2016-11-029590-035-09165.90 ppm
2016-11-029590-004-0838ND
2016-11-029590-042-10150.980 ppm
2016-12-073774-055-10130.500 ppm
2017-01-113774-054-1043ND
2017-01-183774-035-10475.38 ppm
2017-05-189590-058-1734ND
2017-11-079590-004-0955ND
2017-11-089590-053-09391.40 ppm
2017-11-149590-035-09307.00 ppm
2017-11-149590-042-08481.50 ppm
2017-11-289590-035-09287.10 ppm
2017-11-289590-042-09581.50 ppm