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EWG's Tap Water Database

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Nitrate

East Cherry Creek Valley Water and Sanitation District

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

 

74

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20100.204 ppm1210ND - 1.10 ppm
20110.111 ppm117ND - 0.510 ppm
20120.189 ppm148ND - 0.750 ppm
20130.236 ppm148ND - 0.800 ppm
20140.286 ppm148ND - 1.000 ppm
20150.289 ppm94ND - 1.20 ppm

ppm = parts per million.

State and national drinking water standards and health guidelines

Health Guideline 0.14 ppm

The health guideline of 0.14 ppm for nitrate was defined in a peer-reviewed scientific study by EWG and corresponds to one-in-one-million annual cancer risk level.

ppm = parts per million.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppm = parts per million.

EPA Maximum Contaminant
Level Goal (MCLG)10 ppm

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppm = parts per million.

All test results

Date Result
2010-07-21ND
2010-07-210.1000 ppm
2010-07-210.0320 ppm
2010-07-220.0290 ppm
2010-07-221.10 ppm
2010-07-220.1000 ppm
2010-07-220.0180 ppm
2010-07-22ND
2010-07-270.110 ppm
2010-07-270.130 ppm
2010-07-270.780 ppm
2010-07-270.0530 ppm
2011-05-18ND
2011-05-18ND
2011-06-08ND
2011-06-080.510 ppm
2011-06-090.0860 ppm
2011-06-090.0940 ppm
2011-06-21ND
2011-06-210.0180 ppm
2011-06-210.0140 ppm
2011-06-220.0840 ppm
2011-06-220.420 ppm
2012-04-12ND
2012-04-120.200 ppm
2012-04-13ND
2012-04-190.1000 ppm
2012-04-23ND
2012-04-260.1000 ppm
2012-04-26ND
2012-05-040.200 ppm
2012-05-10ND
2012-05-170.1000 ppm
2012-05-17ND
2012-05-250.700 ppm
2012-07-130.500 ppm
2012-10-250.750 ppm
2013-06-050.600 ppm
2013-07-170.800 ppm
2013-07-240.1000 ppm
2013-07-24ND
2013-07-24ND
2013-07-240.1000 ppm
2013-07-240.300 ppm
2013-07-240.500 ppm
2013-07-240.1000 ppm
2013-07-24ND
2013-08-22ND
2013-08-22ND
2013-11-140.800 ppm
2013-12-05ND
2014-02-210.400 ppm
2014-05-190.800 ppm
2014-08-080.600 ppm
2014-08-140.200 ppm
2014-08-181.000 ppm
2014-08-19ND
2014-08-19ND
2014-08-210.500 ppm
2014-08-25ND
2014-08-250.1000 ppm
2014-08-25ND
2014-08-25ND
2014-08-29ND
2014-11-190.400 ppm
2015-01-160.500 ppm
2015-02-030.700 ppm
2015-04-27ND
2015-04-27ND
2015-04-27ND
2015-04-27ND
2015-04-27ND
2015-08-140.200 ppm
2015-09-291.20 ppm