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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

United Wappinger Water Improvement District

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20131.01 ppm440.320 ppm - 1.61 ppm
20140.961 ppm220.421 ppm - 1.50 ppm
2015N/A00N/A
20160.333 ppm220.214 ppm - 0.451 ppm
20170.455 ppm220.410 ppm - 0.500 ppm

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
2013-06-05MB13985C0.320 ppm
2013-06-05MB13982C1.61 ppm
2013-12-04HT132307B0.590 ppm
2013-12-04AT132302C1.51 ppm
2014-12-0912101426A1.50 ppm
2014-12-0912101427A0.421 ppm
2016-11-29UW164141A0.214 ppm
2016-11-30UW164250A0.451 ppm
2017-11-28UW172960A0.500 ppm
2017-11-28UW172957A0.410 ppm