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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

Chesterfield County Central Water System

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0400 ppm41ND - 0.160 ppm
20130.0825 ppm42ND - 0.230 ppm
20140.145 ppm43ND - 0.290 ppm
20150.155 ppm440.110 ppm - 0.270 ppm
20160.0250 ppm42ND - 0.0500 ppm
20170.0625 ppm43ND - 0.120 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
2012-06-05E120400840ND
2012-06-05E1204008120.160 ppm
2012-06-05E120400816ND
2012-06-05E120400824ND
2013-04-23E1302024890.230 ppm
2013-04-23E1302025140.1000 ppm
2013-04-23E130202516ND
2013-04-23E130202501ND
2014-04-22E140308609ND
2014-04-22E1403086070.290 ppm
2014-04-22E1403086140.140 ppm
2014-04-22E1403085740.150 ppm
2015-04-23VA010-DCLS0.110 ppm
2015-04-23VA010-DCLS0.120 ppm
2015-04-23VA010-DCLS0.120 ppm
2015-04-23VA010-DCLS0.270 ppm
2016-04-25E160305683ND
2016-04-25E160305656ND
2016-04-25E1603056550.0500 ppm
2016-04-25E1603056840.0500 ppm
2017-04-19E1703047330.0600 ppm
2017-04-19E1703047440.0700 ppm
2017-04-19E1703047530.120 ppm
2017-04-19E170304723ND