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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

Salt Lake City 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.

 

107

Samples

2

Samples exceeding legal limit (MCL)

101

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20124.96 ppm15150.300 ppm - 31.7 ppm
20131.41 ppm16160.300 ppm - 3.40 ppm
20141.96 ppm14140.300 ppm - 4.90 ppm
20151.02 ppm1514ND - 2.00 ppm
20161.76 ppm2524ND - 5.50 ppm
20171.40 ppm2219ND - 4.63 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 Result
2012-01-250.500 ppm
2012-01-251.30 ppm
2012-01-260.300 ppm
2012-05-251.40 ppm
2012-06-011.10 ppm
2012-06-011.20 ppm
2012-06-051.90 ppm
2012-06-054.40 ppm
2012-06-2920.1 ppm
2012-06-291.20 ppm
2012-06-2931.7 ppm
2012-07-131.80 ppm
2012-07-170.900 ppm
2012-07-311.70 ppm
2012-07-314.90 ppm
2013-01-180.300 ppm
2013-01-250.600 ppm
2013-01-250.300 ppm
2013-05-101.20 ppm
2013-05-151.20 ppm
2013-05-152.10 ppm
2013-05-163.40 ppm
2013-06-181.70 ppm
2013-06-181.70 ppm
2013-06-181.30 ppm
2013-06-251.60 ppm
2013-06-280.900 ppm
2013-06-281.10 ppm
2013-07-301.60 ppm
2013-07-302.20 ppm
2013-08-271.30 ppm
2014-01-100.300 ppm
2014-05-231.10 ppm
2014-05-301.30 ppm
2014-05-301.90 ppm
2014-06-031.30 ppm
2014-06-114.90 ppm
2014-06-250.900 ppm
2014-06-251.000 ppm
2014-07-010.900 ppm
2014-07-014.20 ppm
2014-07-021.30 ppm
2014-07-091.000 ppm
2014-07-094.90 ppm
2014-07-092.40 ppm
2015-01-23ND
2015-01-230.200 ppm
2015-01-300.200 ppm
2015-01-301.10 ppm
2015-02-271.20 ppm
2015-05-082.00 ppm
2015-05-151.10 ppm
2015-06-190.900 ppm
2015-06-191.000 ppm
2015-06-191.40 ppm
2015-06-190.900 ppm
2015-07-100.900 ppm
2015-07-101.60 ppm
2015-07-101.40 ppm
2015-07-171.40 ppm
2016-01-080.200 ppm
2016-01-080.200 ppm
2016-01-151.10 ppm
2016-02-12ND
2016-02-260.200 ppm
2016-03-250.600 ppm
2016-05-191.000 ppm
2016-05-192.10 ppm
2016-06-031.10 ppm
2016-06-031.10 ppm
2016-06-101.40 ppm
2016-06-101.50 ppm
2016-06-104.10 ppm
2016-06-241.20 ppm
2016-06-242.50 ppm
2016-06-244.40 ppm
2016-06-285.00 ppm
2016-06-281.000 ppm
2016-07-081.60 ppm
2016-07-082.70 ppm
2016-07-131.000 ppm
2016-07-291.30 ppm
2016-07-295.50 ppm
2016-07-291.20 ppm
2016-09-081.90 ppm
2017-01-130.199 ppm
2017-01-130.0984 ppm
2017-01-200.339 ppm
2017-03-03ND
2017-03-240.209 ppm
2017-06-091.52 ppm
2017-06-093.86 ppm
2017-06-161.47 ppm
2017-06-16ND
2017-06-162.08 ppm
2017-06-20ND
2017-06-234.63 ppm
2017-06-302.32 ppm
2017-06-301.05 ppm
2017-07-144.63 ppm
2017-07-141.67 ppm
2017-07-211.33 ppm
2017-07-211.16 ppm
2017-08-031.26 ppm
2017-08-081.12 ppm
2017-08-080.933 ppm
2017-08-220.906 ppm