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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

City of North Platte

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.

 

101

Samples

0

Samples exceeding legal limit (MCL)

100

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20123.93 ppm23230.115 ppm - 8.74 ppm
20133.05 ppm23230.275 ppm - 8.89 ppm
20143.34 ppm16160.335 ppm - 9.45 ppm
20152.05 ppm12120.333 ppm - 4.00 ppm
20162.43 ppm13130.343 ppm - 6.22 ppm
20172.90 ppm14140.341 ppm - 6.59 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
2012-03-201535034.19 ppm
2012-03-201535046.34 ppm
2012-03-201535056.57 ppm
2012-05-161667332.32 ppm
2012-05-161667347.88 ppm
2012-06-131667233.83 ppm
2012-06-131667242.71 ppm
2012-06-131667251.72 ppm
2012-06-131667260.115 ppm
2012-06-131667273.06 ppm
2012-06-131667280.581 ppm
2012-06-131667292.14 ppm
2012-06-131667301.86 ppm
2012-06-131667313.41 ppm
2012-06-131667326.64 ppm
2012-09-121849643.99 ppm
2012-09-121849656.29 ppm
2012-09-121849622.69 ppm
2012-09-121849634.22 ppm
2012-10-302036163.97 ppm
2012-10-302036176.46 ppm
2012-10-302094530.748 ppm
2012-12-172036158.74 ppm
2013-02-272186814.00 ppm
2013-02-272186823.72 ppm
2013-02-272186836.17 ppm
2013-02-272186840.714 ppm
2013-05-012288833.58 ppm
2013-05-012288842.83 ppm
2013-05-012288856.41 ppm
2013-05-012288860.774 ppm
2013-06-192288812.95 ppm
2013-06-192288823.19 ppm
2013-06-192288740.539 ppm
2013-06-192288750.275 ppm
2013-06-192288762.03 ppm
2013-06-192288772.64 ppm
2013-06-192288782.03 ppm
2013-06-192288792.91 ppm
2013-06-192288802.55 ppm
2013-07-172467808.89 ppm
2013-07-172467810.781 ppm
2013-09-192467782.72 ppm
2013-09-192467792.93 ppm
2013-10-292650241.34 ppm
2013-12-182657116.28 ppm
2014-02-122810404.49 ppm
2014-05-192937934.35 ppm
2014-05-212947503.27 ppm
2014-05-212947510.335 ppm
2014-05-212947521.49 ppm
2014-05-212947533.02 ppm
2014-05-212947542.07 ppm
2014-05-212947556.25 ppm
2014-05-212947563.56 ppm
2014-05-212947572.19 ppm
2014-05-212947580.525 ppm
2014-07-233085604.45 ppm
2014-09-303090322.81 ppm
2014-09-303090304.36 ppm
2014-09-303090310.831 ppm
2014-10-143280729.45 ppm
2015-06-243566242.38 ppm
2015-06-243566250.554 ppm
2015-06-243566263.12 ppm
2015-06-243566272.49 ppm
2015-06-243566281.81 ppm
2015-06-243566292.53 ppm
2015-06-243566300.333 ppm
2015-06-243566310.847 ppm
2015-06-243566322.96 ppm
2015-09-143739160.807 ppm
2015-09-143739174.00 ppm
2015-09-143739182.73 ppm
2016-06-090.343 ppm
2016-06-091.53 ppm
2016-06-092.81 ppm
2016-06-090.573 ppm
2016-06-206.11 ppm
2016-06-202.41 ppm
2016-06-202.17 ppm
2016-07-184.24 ppm
2016-07-180.841 ppm
2016-07-180.419 ppm
2016-07-183.02 ppm
2016-10-186.22 ppm
2016-10-180.855 ppm
2017-01-306.46 ppm
2017-04-176.59 ppm
2017-06-053.09 ppm
2017-06-052.26 ppm
2017-06-050.341 ppm
2017-06-051.90 ppm
2017-06-052.34 ppm
2017-06-052.02 ppm
2017-07-253.07 ppm
2017-08-304.69 ppm
2017-08-302.74 ppm
2017-08-300.966 ppm
2017-10-253.06 ppm
2017-11-271.01 ppm