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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Magnolia Water Utl - Penn Mill Lakes

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
20150.0550 ppm220.0550 ppm
2016ND20ND
20170.0340 ppm220.0340 ppm
2018ND20ND
2019ND20ND

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
2014-11-20AD99849ND
2014-11-20AD99849ND
2015-12-02352194910190.0550 ppm
2015-12-02352194910190.0550 ppm
2016-06-20AE06947ND
2016-06-20AE06947ND
2017-02-21352969190240.0340 ppm
2017-02-21352969190240.0340 ppm
2018-09-14B1804414-001ND
2018-09-14B1804414-001ND
2019-05-21B1902079-001ND
2019-05-21B1902079-001ND