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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Beauregard Water Works District #3

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

 

108

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
20150.0767 ppm1410ND - 0.260 ppm
20160.0657 ppm246ND - 0.490 ppm
20170.0598 ppm1210ND - 0.240 ppm
20180.0412 ppm344ND - 0.500 ppm
20190.0500 ppm124ND - 0.200 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
2014-10-27AD99058ND
2014-10-27AD99059ND
2014-10-27AD99062ND
2014-10-27AD99063ND
2014-10-27AD99064ND
2014-10-27AD99065ND
2014-10-27AD99058ND
2014-10-27AD99059ND
2014-10-27AD99062ND
2014-10-27AD99063ND
2014-10-27AD99064ND
2014-10-27AD99065ND
2015-03-02351776650020.260 ppm
2015-03-02351776650020.260 ppm
2015-09-2935209534001ND
2015-09-2935209534002ND
2015-09-29352095340030.150 ppm
2015-09-29352095340040.0640 ppm
2015-09-29352095340050.0310 ppm
2015-09-29352095340060.0320 ppm
2015-09-2935209534001ND
2015-09-2935209534002ND
2015-09-29352095340030.150 ppm
2015-09-29352095340040.0640 ppm
2015-09-29352095340050.0310 ppm
2015-09-29352095340060.0320 ppm
2016-01-1935225812001ND
2016-01-1935225812002ND
2016-01-1935225812003ND
2016-01-1935225812004ND
2016-01-1935225812005ND
2016-01-1935225812001ND
2016-01-1935225812002ND
2016-01-1935225812003ND
2016-01-1935225812004ND
2016-01-1935225812005ND
2016-02-01352275390010.490 ppm
2016-02-0135227539002ND
2016-02-0135227539003ND
2016-02-0135227539004ND
2016-02-01352275390060.0280 ppm
2016-02-01352275390070.270 ppm
2016-02-01352275390010.490 ppm
2016-02-0135227539002ND
2016-02-0135227539003ND
2016-02-0135227539004ND
2016-02-01352275390060.0280 ppm
2016-02-01352275390070.270 ppm
2016-05-0235242594004ND
2016-05-0235242594004ND
2017-01-10352882100020.0250 ppm
2017-01-1035288210003ND
2017-01-10352882100040.0270 ppm
2017-01-10352882100050.240 ppm
2017-01-10352882100060.0320 ppm
2017-01-10352882100070.0350 ppm
2017-01-10352882100020.0250 ppm
2017-01-1035288210003ND
2017-01-10352882100040.0270 ppm
2017-01-10352882100050.240 ppm
2017-01-10352882100060.0320 ppm
2017-01-10352882100070.0350 ppm
2018-01-30AE20528ND
2018-01-30AE20529ND
2018-01-30AE20530ND
2018-01-30AE20531ND
2018-01-30AE20532ND
2018-01-30AE20533ND
2018-01-30AE20528ND
2018-01-30AE20529ND
2018-01-30AE20530ND
2018-01-30AE20531ND
2018-01-30AE20532ND
2018-01-30AE20533ND
2018-02-27AE207750.500 ppm
2018-02-27AE207750.500 ppm
2018-03-19AE21152ND
2018-03-19AE211550.200 ppm
2018-03-19AE21158ND
2018-03-19AE21161ND
2018-03-19AE21164ND
2018-03-19AE21152ND
2018-03-19AE211550.200 ppm
2018-03-19AE21158ND
2018-03-19AE21161ND
2018-03-19AE21164ND
2018-04-16AE21398ND
2018-04-16AE21401ND
2018-04-16AE21404ND
2018-04-16AE21407ND
2018-04-16AE21410ND
2018-04-16AE21398ND
2018-04-16AE21401ND
2018-04-16AE21404ND
2018-04-16AE21407ND
2018-04-16AE21410ND
2019-01-15B1900286-001ND
2019-01-15B1900286-0020.200 ppm
2019-01-15B1900286-0030.1000 ppm
2019-01-15B1900286-004ND
2019-01-15B1900286-005ND
2019-01-15B1900286-001ND
2019-01-15B1900286-0020.200 ppm
2019-01-15B1900286-0030.1000 ppm
2019-01-15B1900286-004ND
2019-01-15B1900286-005ND
2019-02-08B1900608-001ND
2019-02-08B1900608-001ND