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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

Bethany Crest LLC

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.

 

76

Samples

16

Samples exceeding legal limit (MCL)

66

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
20137.18 ppm1615ND - 13.2 ppm
20142.18 ppm1211ND - 2.80 ppm
20156.26 ppm15151.40 ppm - 11.5 ppm
20164.41 ppm14142.50 ppm - 11.8 ppm
20173.09 ppm11112.00 ppm - 4.30 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
2012-01-24S382430ND
2012-03-07S382431ND
2012-04-09S386154ND
2012-05-16S386279ND
2012-05-23S388241ND
2012-06-20S387407ND
2012-07-18S387513ND
2012-10-16S430958ND
2013-01-17S388306ND
2013-02-05S826532.10 ppm
2013-03-13S4741882.20 ppm
2013-04-23S4309152.60 ppm
2013-05-13S4793432.20 ppm
2013-06-12S47941912.6 ppm
2013-06-17S50311713.2 ppm
2013-07-01S50507612.9 ppm
2013-08-05S51467013.1 ppm
2013-08-07S51194013.0 ppm
2013-09-05S52275812.9 ppm
2013-09-09S52276512.9 ppm
2013-10-02S5229802.20 ppm
2013-10-03S5229882.40 ppm
2013-11-04S5226017.90 ppm
2013-12-09S5359262.70 ppm
2014-01-27S536058ND
2014-02-11S5485442.10 ppm
2014-03-25S5481682.80 ppm
2014-04-10S5482022.80 ppm
2014-05-07S5705032.20 ppm
2014-06-25S5755672.80 ppm
2014-07-07S5706342.40 ppm
2014-08-19S5765592.50 ppm
2014-09-17S5764852.20 ppm
2014-10-09S5905462.80 ppm
2014-11-12S6017512.10 ppm
2014-12-01S6013831.50 ppm
2015-01-28S6161581.70 ppm
2015-02-03S6168042.00 ppm
2015-02-26S6160891.40 ppm
2015-03-17S6161502.40 ppm
2015-04-22S6199351.80 ppm
2015-05-20S6321462.10 ppm
2015-06-04S6411782.10 ppm
2015-07-09S64172311.5 ppm
2015-07-14S64170111.2 ppm
2015-08-18S64135211.4 ppm
2015-09-23S64142011.5 ppm
2015-10-06S65411711.2 ppm
2015-11-17S6321351.40 ppm
2015-12-09S66061411.1 ppm
2015-12-14S66066811.1 ppm
2016-01-14S6761964.50 ppm
2016-02-11S65953811.8 ppm
2016-02-15S66981911.8 ppm
2016-02-18S6698443.50 ppm
2016-03-02S6794612.90 ppm
2016-04-19S6795922.50 ppm
2016-05-18S6698902.80 ppm
2016-06-08S6700572.80 ppm
2016-07-20S6701503.20 ppm
2016-08-22S7039733.30 ppm
2016-09-14S6713473.40 ppm
2016-10-04S6608373.20 ppm
2016-11-21S7036682.50 ppm
2016-12-08S7094783.50 ppm
2017-01-25S72385672.80 ppm
2017-02-08S6950842.90 ppm
2017-03-16S7235854.00 ppm
2017-04-19S7206283.90 ppm
2017-05-17S7403374.30 ppm
2017-07-20S7516172.70 ppm
2017-08-17S7514312.00 ppm
2017-09-20S7569733.40 ppm
2017-10-18S7632572.90 ppm
2017-11-08S7633192.30 ppm
2017-12-06S7811482.80 ppm