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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Lauradale S/d

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND30ND
2017ND30ND
2018ND30ND
2019ND30ND

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
2014-12-2937729_14-38996ND
2014-12-2937729_14-38997ND
2014-12-2937729_14-38987ND
2015-12-28ND
2015-12-28ND
2015-12-28ND
2016-12-2737729_16-44927ND
2016-12-2737729_16-44928ND
2016-12-2737729_16-44929ND
2017-12-2137729_17-48587ND
2017-12-2137729_17-48589ND
2017-12-2137729_17-48588ND
2018-12-2737729_18-54099 ND
2018-12-2737729_18-54147 ND
2018-12-2737729_18-54151 ND
2019-12-3037729_19-55335 ND
2019-12-3037729_19-55339 ND
2019-12-3137729_19-55413 ND