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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

City of Bremerton

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.

MORE ABOUT THIS CONTAMINANT

 

74

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.135 ppm116ND - 0.440 ppm
20150.122 ppm135ND - 0.370 ppm
20160.177 ppm115ND - 1.01 ppm
20170.153 ppm146ND - 0.930 ppm
20180.105 ppm135ND - 0.310 ppm
20190.0533 ppm121ND - 0.640 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
2014-02-20883010.180 ppm
2014-02-20883010.180 ppm
2014-07-23377020.140 ppm
2014-11-0699001ND
2014-11-0699001ND
2014-11-0699001ND
2014-11-0699001ND
2014-11-0699001ND
2014-11-18209010.110 ppm
2014-11-25362030.440 ppm
2014-11-25362030.440 ppm
2015-02-18090010.320 ppm
2015-02-18090010.320 ppm
2015-05-27708050.210 ppm
2015-05-2770804ND
2015-05-2770803ND
2015-05-2770802ND
2015-05-2770802ND
2015-05-2770802ND
2015-05-27708010.370 ppm
2015-05-27708010.370 ppm
2015-07-0790601ND
2015-07-0790601ND
2015-07-0790601ND
2016-02-02ND
2016-02-02ND
2016-02-020.210 ppm
2016-02-02ND
2016-02-020.210 ppm
2016-03-15ND
2016-05-24ND
2016-05-240.300 ppm
2016-05-24ND
2016-06-020.220 ppm
2016-06-291.01 ppm
2017-04-25ND
2017-04-25ND
2017-04-25ND
2017-06-070.140 ppm
2017-06-070.110 ppm
2017-10-24ND
2017-11-290.930 ppm
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-180.320 ppm
2017-12-180.320 ppm
2017-12-180.320 ppm
2018-01-080.310 ppm
2018-01-080.310 ppm
2018-01-080.310 ppm
2018-01-080.310 ppm
2018-04-03ND
2018-04-03ND
2018-04-03ND
2018-05-03ND
2018-05-03ND
2018-05-03ND
2018-05-03ND
2018-05-150.120 ppm
2018-08-15ND
2019-01-29ND
2019-01-29ND
2019-01-29ND
2019-03-19ND
2019-03-19ND
2019-03-19ND
2019-04-30ND
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-12-120.640 ppm