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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Kern Valley State Prison

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.

MORE ABOUT THIS CONTAMINANT

 

108

Samples

21

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.389 ppm197ND - 2.70 ppm
20150.349 ppm154ND - 1.77 ppm
20160.299 ppm206ND - 1.13 ppm
20170.358 ppm122ND - 2.40 ppm
20180.487 ppm188ND - 2.00 ppm
20190.702 ppm2410ND - 4.00 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
2014-01-075867-001-08450.900 ppm
2014-01-075867-002-09002.70 ppm
2014-01-075867-003-0830ND
2014-02-045867-003-1100ND
2014-03-045867-003-1030ND
2014-04-015867-003-0830ND
2014-05-065867-003-0937ND
2014-06-035867-003-0955ND
2014-07-015867-001-09000.600 ppm
2014-07-015867-002-08300.800 ppm
2014-07-015867-003-0800ND
2014-08-055867-003-1000ND
2014-09-025867-003-1130ND
2014-10-075867-001-10200.700 ppm
2014-10-075867-001-10300.700 ppm
2014-10-075867-002-11301.000 ppm
2014-10-075867-003-0800ND
2014-11-045867-003-0800ND
2014-12-025867-003-0950ND
2015-01-065867-003-0900ND
2015-01-275867-002-11001.20 ppm
2015-02-035867-003-0730ND
2015-03-035867-003-0800ND
2015-04-075867-001-10001.000 ppm
2015-04-075867-003-0830ND
2015-05-055867-003-0900ND
2015-06-025867-003-0800ND
2015-08-042119-001-0845ND
2015-08-042119-002-07301.77 ppm
2015-08-042119-003-0845ND
2015-10-062119-001-10001.26 ppm
2015-10-062119-002-0920ND
2015-10-062119-003-0800ND
2015-11-032119-003-0839ND
2016-01-052119-001-0900ND
2016-01-052119-002-0840ND
2016-01-052119-003-0830ND
2016-02-022119-003-0745ND
2016-03-082119-003-0730ND
2016-04-052119-001-09001.06 ppm
2016-04-052119-003-0730ND
2016-04-122119-002-07001.09 ppm
2016-05-032119-003-0730ND
2016-06-012119-003-0830ND
2016-07-052119-001-08000.870 ppm
2016-07-052119-002-08450.880 ppm
2016-07-052119-003-0700ND
2016-08-022119-003-0700ND
2016-09-062119-003-0700ND
2016-10-042119-001-06300.950 ppm
2016-10-042119-002-07001.13 ppm
2016-10-042119-003-0730ND
2016-11-082119-003-0730ND
2016-12-062119-003-0730ND
2017-01-032119-003-0745ND
2017-03-072119-003-0700ND
2017-05-022119-003-0700ND
2017-06-062119-003-0700ND
2017-07-055806-003-0730ND
2017-07-115806-001-07301.90 ppm
2017-07-115806-002-08302.40 ppm
2017-08-015806-003-0730ND
2017-09-055806-003-0730ND
2017-10-035806-003-0730ND
2017-11-075806-003-0730ND
2017-12-055806-003-0730ND
2018-01-025806-003-0730ND
2018-01-095806-001-09000.910 ppm
2018-01-095806-002-08302.00 ppm
2018-03-065806-003-0730ND
2018-04-035806-001-09001.20 ppm
2018-04-035806-002-09301.60 ppm
2018-04-035806-003-0730ND
2018-06-055806-003-0730ND
2018-07-035806-001-0800ND
2018-07-035806-002-08150.830 ppm
2018-07-035806-003-0650ND
2018-08-075806-003-0700ND
2018-09-045806-003-07000.110 ppm
2018-10-025806-001-10000.910 ppm
2018-10-025806-002-08001.20 ppm
2018-10-025806-003-0700ND
2018-11-065806-003-0730ND
2018-12-045806-003-0730ND
2019-01-025806-001-13101.10 ppm
2019-01-025806-002-11201.30 ppm
2019-01-025806-003-0730ND
2019-02-055806-003-0730ND
2019-02-125806-001-10300.950 ppm
2019-02-125806-002-10301.40 ppm
2019-03-055806-003-0730ND
2019-04-025806-001-11000.890 ppm
2019-04-025806-002-10301.70 ppm
2019-04-025806-003-0730ND
2019-05-075806-003-0730ND
2019-06-045806-003-0730ND
2019-07-025867-001-08002.50 ppm
2019-07-025867-002-08454.00 ppm
2019-07-025867-003-0700ND
2019-07-175867-003-0925ND
2019-08-075867-003-0945ND
2019-09-045867-003-0700ND
2019-10-025867-001-12001.30 ppm
2019-10-025867-002-11301.70 ppm
2019-10-025867-003-0700ND
2019-11-065867-003-0730ND
2019-12-045867-003-0700ND
2019-12-305867-003-0700ND