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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Augusta-Richmond Company

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

 

30

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.440 ppm52ND - 1.60 ppm
20150.494 ppm52ND - 1.80 ppm
20160.522 ppm52ND - 2.00 ppm
20170.506 ppm52ND - 1.90 ppm
20180.526 ppm52ND - 2.00 ppm
20190.544 ppm53ND - 1.90 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
2014-10-28AI58462ND
2014-10-29AI58634ND
2014-10-29AI586331.60 ppm
2014-10-29AI58632ND
2014-10-30AI586840.600 ppm
2015-09-02AI886850.670 ppm
2015-09-02AI88684ND
2015-09-02AI88683ND
2015-09-02AI886821.80 ppm
2015-09-02AI88681ND
2016-08-25AJ242442.00 ppm
2016-08-25AJ242500.610 ppm
2016-08-25AJ24248ND
2016-08-25AJ24247ND
2016-08-25AJ24245ND
2017-08-29AJ66215ND
2017-08-29AJ66214ND
2017-08-29AJ66213ND
2017-08-29AJ662120.630 ppm
2017-08-29AJ662111.90 ppm
2018-08-28AJ992360.630 ppm
2018-08-28AJ99235ND
2018-08-28AJ99234ND
2018-08-28AJ992332.00 ppm
2018-08-28AJ99232ND
2019-08-07AK251760.220 ppm
2019-08-07AK251800.600 ppm
2019-08-07AK25179ND
2019-08-07AK251781.90 ppm
2019-08-07AK25177ND