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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Carson City Public Works

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.

 

403

Samples

0

Samples exceeding legal limit (MCL)

345

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.10 ppm7967ND - 7.90 ppm
20132.97 ppm10699ND - 8.70 ppm
20142.07 ppm5650ND - 7.46 ppm
20152.37 ppm5748ND - 8.50 ppm
20161.82 ppm4741ND - 6.50 ppm
20171.86 ppm5852ND - 5.50 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
2012-01-041200014.53 ppm
2012-01-101200094.56 ppm
2012-01-121200122.10 ppm
2012-01-181200214.55 ppm
2012-01-241200255.37 ppm
2012-02-011200445.26 ppm
2012-02-081200564.22 ppm
2012-02-091200611.08 ppm
2012-02-141200634.05 ppm
2012-02-141200843.86 ppm
2012-02-281200933.79 ppm
2012-03-061201054.01 ppm
2012-03-081201121.05 ppm
2012-03-131201213.67 ppm
2012-03-201201283.81 ppm
2012-04-261201670.520 ppm
2012-05-211201920.640 ppm
2012-05-251202111.53 ppm
2012-06-051202244.53 ppm
2012-06-121202334.70 ppm
2012-06-19201206210314-IND
2012-06-191202454.69 ppm
2012-06-21201206220321-IND
2012-06-251202601.51 ppm
2012-06-25201206270244-I0.120 ppm
2012-06-25201206270216-I2.00 ppm
2012-06-261202644.89 ppm
2012-07-09120281ND
2012-07-091202791.78 ppm
2012-07-09120280ND
2012-07-091202761.41 ppm
2012-07-091202781.54 ppm
2012-07-091202770.530 ppm
2012-07-111202930.650 ppm
2012-07-111202902.24 ppm
2012-07-111202922.13 ppm
2012-07-111202911.14 ppm
2012-07-11201207130064-I0.320 ppm
2012-07-191203131.54 ppm
2012-07-24120333ND
2012-07-24120337ND
2012-07-24120335ND
2012-07-241203320.620 ppm
2012-07-24120337-B0.490 ppm
2012-07-241203340.640 ppm
2012-07-241203360.460 ppm
2012-07-30120342ND
2012-07-301203411.10 ppm
2012-07-301203400.760 ppm
2012-08-011203571.51 ppm
2012-08-01120355ND
2012-08-08201208100396-IND
2012-09-091204910.700 ppm
2012-09-131204707.90 ppm
2012-09-171204836.69 ppm
2012-09-181204846.51 ppm
2012-09-18201209200453-I6.50 ppm
2012-09-191204906.23 ppm
2012-09-20120497-N1.64 ppm
2012-09-241205025.49 ppm
2012-09-251205145.15 ppm
2012-09-261205155.18 ppm
2012-10-011205240.00477 ppm
2012-10-021205250.00470 ppm
2012-10-02201210030297-IND
2012-10-041205330.00428 ppm
2012-10-081205340.00405 ppm
2012-10-091205370.00402 ppm
2012-10-101205450.00402 ppm
2012-10-151205470.00375 ppm
2012-10-161205480.00373 ppm
2012-10-171205510.00373 ppm
2012-10-22201210230058-I3.60 ppm
2012-10-22S201210-10693.50 ppm
2012-10-251205602.45 ppm
2012-11-13201211150453-IND
2012-11-141205812.37 ppm
2012-11-291206010.670 ppm
2012-12-031206031.59 ppm
2013-01-02S201301-01098.70 ppm
2013-01-08S201301-03566.70 ppm
2013-01-151300066.70 ppm
2013-01-221300146.41 ppm
2013-01-23130020.11.17 ppm
2013-01-291300256.30 ppm
2013-02-051300326.14 ppm
2013-02-12130032-15.78 ppm
2013-02-191300485.98 ppm
2013-02-25130020.21.22 ppm
2013-02-271300626.18 ppm
2013-03-051300716.13 ppm
2013-03-121300778.15 ppm
2013-03-191300891.49 ppm
2013-03-191300868.11 ppm
2013-03-261301068.06 ppm
2013-04-161301411.69 ppm
2013-04-24S201304-10950.420 ppm
2013-05-211301890.680 ppm
2013-05-301302021.51 ppm
2013-06-131302321.64 ppm
2013-06-18201306190582-I1.40 ppm
2013-06-201302458.30 ppm
2013-06-201302478.02 ppm
2013-06-201302486.51 ppm
2013-06-241302495.15 ppm
2013-06-251302514.87 ppm
2013-06-251302500.710 ppm
2013-06-26201306270194-IND
2013-06-271302614.32 ppm
2013-07-011302623.64 ppm
2013-07-051302663.33 ppm
2013-07-061302673.34 ppm
2013-07-081302683.36 ppm
2013-07-081302691.62 ppm
2013-07-091307396-0013.70 ppm
2013-07-101307396-0023.50 ppm
2013-07-151307396-0033.70 ppm
2013-07-161307396-0043.70 ppm
2013-07-18201307200001-I0.730 ppm
2013-07-191302863.06 ppm
2013-07-221302873.10 ppm
2013-07-23S201307-1037ND
2013-07-23S201307-10381.80 ppm
2013-07-231302903.07 ppm
2013-07-23S201307-10392.30 ppm
2013-07-231302890.680 ppm
2013-07-23S201307-10360.490 ppm
2013-07-251303003.15 ppm
2013-07-291303023.27 ppm
2013-07-301303033.20 ppm
2013-07-311303063.22 ppm
2013-07-311303076.20 ppm
2013-08-051303123.11 ppm
2013-08-061303133.08 ppm
2013-08-071303163.12 ppm
2013-08-121303203.11 ppm
2013-08-131303213.07 ppm
2013-08-14130286-N3.15 ppm
2013-08-19130321-N3.14 ppm
2013-08-211303343.18 ppm
2013-08-221303293.20 ppm
2013-08-27130351-2ND
2013-08-271303501.61 ppm
2013-08-271303473.24 ppm
2013-08-271303482.26 ppm
2013-08-271303490.600 ppm
2013-08-271303510.720 ppm
2013-08-271303530.560 ppm
2013-08-271303541.27 ppm
2013-08-271303552.18 ppm
2013-08-281303563.19 ppm
2013-08-281303581.63 ppm
2013-08-291303613.24 ppm
2013-09-03130372ND
2013-09-03130371ND
2013-09-031303730.740 ppm
2013-09-031303682.30 ppm
2013-09-031303673.15 ppm
2013-09-031303691.30 ppm
2013-09-03130374ND
2013-09-041303753.25 ppm
2013-09-051303763.21 ppm
2013-09-091303773.11 ppm
2013-09-09201309100461-I0.250 ppm
2013-09-101303783.22 ppm
2013-09-111303823.20 ppm
2013-09-161303903.29 ppm
2013-09-161303921.68 ppm
2013-09-171303953.26 ppm
2013-09-181303983.16 ppm
2013-09-231309517-0013.50 ppm
2013-09-241309518-0013.40 ppm
2013-09-241309515-0010.560 ppm
2013-09-251309516-0013.50 ppm
2013-09-25201309260254-IND
2013-09-301304014.17 ppm
2013-09-301303993.27 ppm
2013-10-011304003.27 ppm
2013-10-081304101.42 ppm
2013-10-121304321.53 ppm
2013-10-141304190.700 ppm
2013-11-191304221.05 ppm
2013-11-262013120200600.370 ppm
2013-12-161304780.630 ppm
2013-12-171304801.41 ppm
2014-01-131400051.52 ppm
2014-01-141400121.38 ppm
2014-01-281400270.680 ppm
2014-02-241400480.680 ppm
2014-02-281400421.12 ppm
2014-03-261400961.59 ppm
2014-03-262014032701801.000 ppm
2014-04-281401322.35 ppm
2014-04-291401384.83 ppm
2014-04-291401370.600 ppm
2014-05-211401660.660 ppm
2014-05-27201405280593-NND
2014-05-281401731.58 ppm
2014-06-181402071.61 ppm
2014-06-191402110.710 ppm
2014-06-231402127.46 ppm
2014-06-242014062501070.530 ppm
2014-06-242014062501062.80 ppm
2014-06-242014062501032.40 ppm
2014-06-242014062501046.70 ppm
2014-06-242014062501050.940 ppm
2014-06-242014062501080.330 ppm
2014-06-242014062501020.250 ppm
2014-06-25201406270015ND
2014-06-252014062700172.00 ppm
2014-06-25201406270018ND
2014-06-252014062700160.220 ppm
2014-06-251402186.19 ppm
2014-06-252014062700121.60 ppm
2014-06-252014062700130.380 ppm
2014-06-252014062700110.510 ppm
2014-06-252014062700140.140 ppm
2014-07-012014070203811.10 ppm
2014-07-012014070203822.20 ppm
2014-07-01201407020380ND
2014-07-021407076-0014.20 ppm
2014-07-082014070907173.20 ppm
2014-07-091407249-0014.00 ppm
2014-07-161407431-0013.90 ppm
2014-07-231407627-0013.90 ppm
2014-07-301407798-0013.90 ppm
2014-07-302014073102641.70 ppm
2014-07-301407796-0011.20 ppm
2014-07-301407797-0010.420 ppm
2014-08-061408149-0013.70 ppm
2014-08-131408356-0013.70 ppm
2014-08-201408543-0013.80 ppm
2014-08-201408542-0010.510 ppm
2014-08-271408737-0013.80 ppm
2014-09-031409065-0013.80 ppm
2014-09-04201409050275ND
2014-09-101409292-0013.80 ppm
2014-09-171409500-0013.80 ppm
2014-09-231409696-001ND
2014-10-291410796-0015.30 ppm
2014-12-171412550-0011.40 ppm
2015-03-26201503270323-N6.90 ppm
2015-04-211504596-001-N0.350 ppm
2015-05-181505412-0018.50 ppm
2015-05-191505437-0018.00 ppm
2015-05-201505465-0017.50 ppm
2015-05-27150527-0054.70 ppm
2015-05-27150527-0010.310 ppm
2015-06-031506119-0014.50 ppm
2015-06-101506297-0014.00 ppm
2015-06-171506480-0014.10 ppm
2015-06-241506697-0010.450 ppm
2015-06-241506696-0014.20 ppm
2015-06-29201506300124-IOC0.000450 ppm
2015-06-29201506300177-IOCND
2015-06-301507049-0011.70 ppm
2015-07-011507048-0024.20 ppm
2015-07-081507238-0014.10 ppm
2015-07-14201507150299ND
2015-07-151507413-0014.20 ppm
2015-07-152015071604412.30 ppm
2015-07-152015071603270.400 ppm
2015-07-15201507160255ND
2015-07-21201507220179ND
2015-07-221507595-0014.20 ppm
2015-07-27201507280085ND
2015-07-272015072800841.90 ppm
2015-07-27201507280083ND
2015-07-272015072800860.360 ppm
2015-07-292015073002150.400 ppm
2015-07-292015073002140.530 ppm
2015-07-292015073002132.40 ppm
2015-07-291507777-0014.10 ppm
2015-07-292015073002120.830 ppm
2015-07-292015073002162.00 ppm
2015-07-292015073002090.280 ppm
2015-08-03201508040410-N3.00 ppm
2015-08-051508124-0024.30 ppm
2015-08-10201508110263ND
2015-08-121508330-0074.00 ppm
2015-08-121508331-0010.250 ppm
2015-08-132015081402590.780 ppm
2015-08-132015081402540.430 ppm
2015-08-191508498-0014.30 ppm
2015-08-261508679-0014.40 ppm
2015-09-15201509160733ND
2015-09-152015091607295.20 ppm
2015-09-152015091607341.20 ppm
2015-09-152015090201340.870 ppm
2015-09-231509655-001ND
2015-09-232015092402911.000 ppm
2015-09-231509654-0010.360 ppm
2015-10-071510213-0015.80 ppm
2015-10-211510593-0011.40 ppm
2015-10-211510592-0010.670 ppm
2015-11-181511475-0010.720 ppm
2015-12-091512296-0010.620 ppm
2015-12-162015121701358.30 ppm
2016-01-201601433-0010.300 ppm
2016-04-201604522-001ND
2016-06-15160615-0024.60 ppm
2016-06-15160615-0010.630 ppm
2016-06-16160616-0014.20 ppm
2016-06-22201606230265ND
2016-06-222016062302710.810 ppm
2016-06-23160623-0035.00 ppm
2016-06-23160623-0071.20 ppm
2016-06-28201606290224ND
2016-06-28201606290218ND
2016-06-28201606290223ND
2016-06-282016062902221.80 ppm
2016-06-282016062902200.370 ppm
2016-06-282016062902190.400 ppm
2016-06-282016062902211.20 ppm
2016-06-301607130-0014.60 ppm
2016-07-13160713-0092.20 ppm
2016-07-13160713-0104.40 ppm
2016-07-13160713-0121.30 ppm
2016-07-13160713-0070.570 ppm
2016-07-21160721-0014.20 ppm
2016-07-28160728-0034.30 ppm
2016-08-102016081103501.90 ppm
2016-08-102016081200410.200 ppm
2016-08-102016081200370.510 ppm
2016-08-102016081200403.00 ppm
2016-08-102016081200391.40 ppm
2016-08-102016081104530.270 ppm
2016-08-10201608120038ND
2016-08-111060811_0022.00 ppm
2016-08-11160811_0013.80 ppm
2016-08-11160811_0061.10 ppm
2016-08-15160815_0014.10 ppm
2016-08-162016081702310.520 ppm
2016-08-162016081702334.70 ppm
2016-08-162016081702323.60 ppm
2016-09-07160907_0050.600 ppm
2016-09-21160921-_0092.50 ppm
2016-09-21160921-0071.30 ppm
2016-09-21160921_0081.20 ppm
2016-09-211609658-0020.950 ppm
2016-10-191610613-0010.790 ppm
2016-11-09161109_0051.40 ppm
2016-11-09161109_0060.500 ppm
2016-12-221612713-0016.50 ppm
2016-12-281612810-0010.680 ppm
2017-01-311701686-0010.380 ppm
2017-02-15170215-0040.400 ppm
2017-03-21170321-0200.450 ppm
2017-04-26170426_0010.800 ppm
2017-05-152017051608670.160 ppm
2017-05-15201705160571ND
2017-05-152017051606320.500 ppm
2017-05-152017051605411.000 ppm
2017-05-16201705170491ND
2017-05-162017051703040.340 ppm
2017-05-162017051707820.270 ppm
2017-05-171705493-0010.320 ppm
2017-05-232017052409620.940 ppm
2017-05-23201705240769ND
2017-05-252017052605914.70 ppm
2017-05-252017052605962.80 ppm
2017-06-132017061404240.920 ppm
2017-06-141706412-0012.30 ppm
2017-06-141706413-0015.20 ppm
2017-06-141706415-0015.50 ppm
2017-06-141706414-0010.750 ppm
2017-07-051707051-0014.50 ppm
2017-07-052017070608653.50 ppm
2017-07-12170712-0082.40 ppm
2017-07-12170712-0071.40 ppm
2017-07-19170719-150.730 ppm
2017-07-202017072103312.90 ppm
2017-07-202017072103284.50 ppm
2017-07-252017072607651.90 ppm
2017-07-252017072607643.50 ppm
2017-07-262017072604902.10 ppm
2017-07-27201707280313ND
2017-08-012017080208970.410 ppm
2017-08-012017080209220.520 ppm
2017-08-01201708021373ND
2017-08-01201708021436ND
2017-08-23170823_0020.420 ppm
2017-08-24170824_0014.70 ppm
2017-08-282017082902171.90 ppm
2017-08-29170829_0024.60 ppm
2017-09-06170906_009-14.70 ppm
2017-09-06170906_0090.500 ppm
2017-09-13170913_0022.70 ppm
2017-09-13170913_0014.80 ppm
2017-09-13170913_0034.30 ppm
2017-09-27170927-0032.40 ppm
2017-10-11171011-0092.90 ppm
2017-10-11171011-001.40 ppm
2017-10-162017101703901.10 ppm
2017-10-251710819-0010.830 ppm
2017-11-081711317-0022.70 ppm
2017-11-081711317-0013.10 ppm
2017-11-201711685-0010.930 ppm
2017-12-131712431-0023.30 ppm
2017-12-131712434-0010.600 ppm
2017-12-131712431-0011.50 ppm
2017-12-131712436-0011.000 ppm
2017-12-211712678-0011.20 ppm