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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

City of Elko

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.

MORE ABOUT THIS CONTAMINANT

 

146

Samples

0

Samples exceeding legal limit (MCL)

140

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.15 ppm18180.570 ppm - 7.20 ppm
20152.16 ppm20200.500 ppm - 8.60 ppm
20163.17 ppm22220.560 ppm - 9.80 ppm
20173.10 ppm26260.480 ppm - 9.80 ppm
20182.41 ppm21210.600 ppm - 8.80 ppm
20192.30 ppm3933ND - 9.51 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Lab ID Result
2014-03-03S201403-00440.740 ppm
2014-03-03S201403-00420.780 ppm
2014-03-03S201403-00410.920 ppm
2014-05-05S201405-01701.20 ppm
2014-05-05S201405-01760.760 ppm
2014-05-05S201405-01681.30 ppm
2014-05-07S201405-03787.00 ppm
2014-05-27S201405-14031.20 ppm
2014-06-10S201406-05501.20 ppm
2014-06-10S201406-05481.10 ppm
2014-06-10S201406-05463.00 ppm
2014-06-10S201406-05450.570 ppm
2014-07-21S201407-09250.690 ppm
2014-07-21S201407-09272.40 ppm
2014-07-21S201407-09247.20 ppm
2014-07-23S201407-10723.00 ppm
2014-07-28S201407-11961.40 ppm
2014-08-11S201408-04954.30 ppm
2015-04-08S201504-03450.940 ppm
2015-04-08S201504-03501.000 ppm
2015-04-08S201504-03441.20 ppm
2015-04-08S201504-03431.40 ppm
2015-04-08S201504-0347-N0.880 ppm
2015-04-08S201504-03490.750 ppm
2015-05-13S201505-07351.20 ppm
2015-05-13S201505-07340.730 ppm
2015-05-13S201505-07243.40 ppm
2015-05-13S201505-07365.40 ppm
2015-05-18S201505-08261.20 ppm
2015-05-19S201505-08211.40 ppm
2015-06-08S201506-03620.830 ppm
2015-06-08S201506-03630.970 ppm
2015-06-17S201506-08924.30 ppm
2015-06-17S201506-08820.500 ppm
2015-06-24S201506-11152.00 ppm
2015-08-24S201508-11583.30 ppm
2015-08-24S201508-11558.60 ppm
2015-08-24S201508-11543.10 ppm
2016-03-23S201603-09820.860 ppm
2016-03-23S201603-09840.700 ppm
2016-03-23S201603-09800.830 ppm
2016-05-02S201605-00681.10 ppm
2016-05-02S201605-00700.560 ppm
2016-06-01S201606-00900.760 ppm
2016-06-13S201606-06571.80 ppm
2016-06-13S201606-06565.70 ppm
2016-06-13S201606-06556.10 ppm
2016-06-13S201606-06584.00 ppm
2016-06-20S201606-09841.20 ppm
2016-06-20S201606-09860.730 ppm
2016-06-20S201606-09820.690 ppm
2016-06-21S201606-10751.40 ppm
2016-06-28S201606-13734.40 ppm
2016-06-28S201606-13715.50 ppm
2016-06-28S201606-13691.10 ppm
2016-07-13A201607-06878.50 ppm
2016-07-19S201607-08963.30 ppm
2016-09-14S201609-06835.10 ppm
2016-10-11S201610-04705.70 ppm
2016-10-18S201610-08869.80 ppm
2017-03-2217031109-013.00 ppm
2017-03-2217031107-016.20 ppm
2017-03-2217031108-014.20 ppm
2017-04-2717041436-018.20 ppm
2017-04-2717041437-014.50 ppm
2017-04-2717041435-015.60 ppm
2017-04-2817041438-013.10 ppm
2017-07-2517071254-017.50 ppm
2017-07-2617071256-012.80 ppm
2017-07-2617071282-011.80 ppm
2017-07-2617071268-011.20 ppm
2017-07-2617071281-011.20 ppm
2017-07-2617071280-010.830 ppm
2017-07-2617071279-010.480 ppm
2017-07-2717071284-011.10 ppm
2017-08-2117081059-011.20 ppm
2017-08-2117081047-021.30 ppm
2017-08-2117081060-011.10 ppm
2017-08-2117081057-010.620 ppm
2017-08-2117081058-010.790 ppm
2017-08-2117081050-021.50 ppm
2017-08-2117081061-010.870 ppm
2017-09-1317090643-013.90 ppm
2017-10-2517101443-013.40 ppm
2017-10-2517101442-019.80 ppm
2017-10-2517101440-014.50 ppm
2018-03-2118030976-018.50 ppm
2018-05-2318051309-011.10 ppm
2018-05-2318051310-012.20 ppm
2018-05-2318051311-012.00 ppm
2018-06-0618060359-018.80 ppm
2018-08-0618008294-010.960 ppm
2018-08-0618080297-010.620 ppm
2018-08-0618080298-016.90 ppm
2018-08-0618080300-012.60 ppm
2018-08-0718080411-011.000 ppm
2018-08-0718080415-010.720 ppm
2018-08-0718080417-011.30 ppm
2018-08-0718080422-011.10 ppm
2018-08-0718080447-011.40 ppm
2018-08-0718080451-011.20 ppm
2018-08-1418080951-010.600 ppm
2018-08-1418080954-010.800 ppm
2018-08-1418080955-010.800 ppm
2018-08-1418080957-010.900 ppm
2018-08-1718080958-011.30 ppm
2018-11-1918110982-015.80 ppm
2019-03-2519031218-012.40 ppm
2019-03-2519031220-013.50 ppm
2019-03-2519031220-023.50 ppm
2019-03-2519031221-014.90 ppm
2019-06-0319060082-012.90 ppm
2019-06-0319060083-012.20 ppm
2019-06-0319060085-011.20 ppm
2019-06-0319060087-011.10 ppm
2019-06-0319060090-011.000 ppm
2019-06-0319060091-010.710 ppm
2019-06-1019060791-01ND
2019-06-1019060792-013.40 ppm
2019-06-1019060794-010.700 ppm
2019-06-1019060795-01ND
2019-06-1119060777-01ND
2019-06-1119060779-012.60 ppm
2019-06-1119060781-010.700 ppm
2019-06-2419061462-01ND
2019-06-2419061463-01ND
2019-06-2419061465-018.50 ppm
2019-06-2419061468-013.70 ppm
2019-07-2719081514-012.10 ppm
2019-08-19B19081870-0011.10 ppm
2019-08-19B19081921-0010.800 ppm
2019-08-20B19082032-0011.18 ppm
2019-08-21B19082173-0010.650 ppm
2019-08-21B19082177-0010.530 ppm
2019-08-2719081513-014.80 ppm
2019-08-2719081516-012.60 ppm
2019-08-2719081599-012.40 ppm
2019-08-2719081603-016.70 ppm
2019-08-2719081605-01ND
2019-08-2819081589-010.980 ppm
2019-08-2819081592-012.60 ppm
2019-08-2819081612-011.30 ppm
2019-09-04B19090361-0010.890 ppm
2019-09-16B19091605-0010.750 ppm
2019-10-28B19102504-0019.51 ppm
2019-10-28B19102510-0017.63 ppm