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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Cameron Parish Water Works District 9

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

MORE ABOUT THIS CONTAMINANT

 

56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
20150.00933 ppm62ND - 0.0280 ppm
20160.00650 ppm82ND - 0.0260 ppm
20170.0113 ppm164ND - 0.0460 ppm
20180.0200 ppm102ND - 0.1000 ppm
2019ND80ND

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL) 10 ppm

ppm = parts per million

All test results

Date Lab ID Result
2014-06-16AD92300ND
2014-06-16AD92295ND
2014-06-16AD92290ND
2014-06-16AD92300ND
2014-06-16AD92295ND
2014-06-16AD92290ND
2014-10-06AD98418ND
2014-10-06AD98418ND
2015-05-1835189109024ND
2015-05-18351891090250.0280 ppm
2015-05-1835189109026ND
2015-05-1835189109026ND
2015-05-18351891090250.0280 ppm
2015-05-1835189109024ND
2016-03-1735235447005ND
2016-03-1735235447005ND
2016-03-1735235447004ND
2016-03-1735235447003ND
2016-03-17352354470020.0260 ppm
2016-03-1735235447004ND
2016-03-1735235447003ND
2016-03-17352354470020.0260 ppm
2017-04-03353045320110.0440 ppm
2017-04-0335304532008ND
2017-04-03353045320090.0460 ppm
2017-04-0335304532010ND
2017-04-03353045320110.0440 ppm
2017-04-0335304532008ND
2017-04-03353045320090.0460 ppm
2017-04-0335304532010ND
2017-06-19AE14869ND
2017-06-19AE14857ND
2017-06-19AE14865ND
2017-06-19AE14861ND
2017-06-19AE14857ND
2017-06-19AE14869ND
2017-06-19AE14865ND
2017-06-19AE14861ND
2018-05-02B1801782-003ND
2018-05-02B1801782-004ND
2018-05-02B1801782-002ND
2018-05-02B1801782-001ND
2018-05-02B1801782-001ND
2018-05-02B1801782-002ND
2018-05-02B1801782-003ND
2018-05-02B1801782-004ND
2018-09-24B1804633-0010.1000 ppm
2018-09-24B1804633-0010.1000 ppm
2019-04-09B1901469-001ND
2019-04-09B1901469-004ND
2019-04-09B1901469-003ND
2019-04-09B1901469-002ND
2019-04-09B1901469-001ND
2019-04-09B1901469-004ND
2019-04-09B1901469-003ND
2019-04-09B1901469-002ND