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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

Las Vegas Valley Water 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.

 

395

Samples

0

Samples exceeding legal limit (MCL)

395

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.82 ppm74740.390 ppm - 6.20 ppm
20151.55 ppm69690.350 ppm - 5.50 ppm
20162.01 ppm75750.340 ppm - 7.49 ppm
20171.79 ppm66660.346 ppm - 7.78 ppm
20181.97 ppm61610.339 ppm - 5.33 ppm
20191.74 ppm50500.435 ppm - 6.05 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
2014-01-1314010145-0010.850 ppm
2014-01-2914010393-0010.980 ppm
2014-01-2914010388-0012.40 ppm
2014-01-2914010393-0023.00 ppm
2014-01-2914010386-0010.860 ppm
2014-01-2914010386-0020.820 ppm
2014-01-2914010386-0031.20 ppm
2014-03-1114030130-0015.00 ppm
2014-05-1214050125-0011.000 ppm
2014-05-1214050125-0021.40 ppm
2014-05-1214050125-0041.80 ppm
2014-05-1214050129-0020.390 ppm
2014-05-1214050129-0010.520 ppm
2014-05-1214050129-0050.520 ppm
2014-05-1214050129-0031.20 ppm
2014-05-1214050129-0040.780 ppm
2014-05-1314050166-0011.000 ppm
2014-05-1314050166-0021.70 ppm
2014-05-1314050166-0111.10 ppm
2014-05-1314050181-0030.480 ppm
2014-05-1314050181-0020.770 ppm
2014-05-1314050181-0110.390 ppm
2014-05-1314050181-0010.790 ppm
2014-05-1314050181-0121.10 ppm
2014-05-1414050257-0015.20 ppm
2014-05-1414050257-0111.90 ppm
2014-05-1414050257-0121.30 ppm
2014-05-2214050436-0015.50 ppm
2014-06-0314050494-0013.90 ppm
2014-06-0314050494-0033.90 ppm
2014-06-0314050494-0024.80 ppm
2014-06-0314050513-0012.20 ppm
2014-06-0314050513-0020.800 ppm
2014-06-0314050513-0031.10 ppm
2014-06-0414060076-0013.40 ppm
2014-06-0414060081-0012.40 ppm
2014-06-0414060081-0021.10 ppm
2014-06-0414060081-0031.40 ppm
2014-06-0414060076-0031.20 ppm
2014-06-0414060076-0020.500 ppm
2014-06-0914060160-0010.831 ppm
2014-06-0914060160-0020.534 ppm
2014-06-0914060160-0030.416 ppm
2014-06-1014060170-0024.17 ppm
2014-06-1014060170-0012.69 ppm
2014-06-1014060165-0020.610 ppm
2014-06-1014060170-0030.658 ppm
2014-06-1014060165-0030.589 ppm
2014-06-1014060165-0011.01 ppm
2014-06-1114060242-0031.90 ppm
2014-06-1114060242-0021.40 ppm
2014-06-1114060242-0011.50 ppm
2014-06-1114060230-0031.30 ppm
2014-06-1114060230-0022.20 ppm
2014-06-1114060230-0010.450 ppm
2014-06-1614060276-0021.80 ppm
2014-06-1614060276-0011.40 ppm
2014-06-1614060276-0030.840 ppm
2014-06-1614060271-0030.970 ppm
2014-06-1614060271-0022.80 ppm
2014-06-1614060271-0010.440 ppm
2014-06-1714060388-0021.000 ppm
2014-06-1714060388-0011.10 ppm
2014-06-1714060393-0030.690 ppm
2014-06-1714060393-0012.80 ppm
2014-06-1714060393-0022.60 ppm
2014-06-1714060388-0034.50 ppm
2014-06-1814060398-0021.60 ppm
2014-06-1814060398-0011.90 ppm
2014-06-2514060526-0013.20 ppm
2014-08-0714080103-0016.20 ppm
2014-09-1014090181-0013.80 ppm
2014-09-2314090415-0010.870 ppm
2014-12-1714120310-0015.60 ppm
2015-02-0915020123-0011.30 ppm
2015-02-0915020123-0033.00 ppm
2015-02-0915020123-0022.80 ppm
2015-02-0915020123-0050.840 ppm
2015-02-0915020123-0061.20 ppm
2015-02-0915020123-0040.730 ppm
2015-05-1115050112-0040.870 ppm
2015-05-1115050112-0031.70 ppm
2015-05-1115050112-0020.940 ppm
2015-05-1115050112-0011.90 ppm
2015-05-1115050112-0053.10 ppm
2015-05-1115050113-0053.20 ppm
2015-05-1115050113-0010.550 ppm
2015-05-1115050113-0030.720 ppm
2015-05-1115050113-0041.10 ppm
2015-05-1115050113-0020.780 ppm
2015-05-1215050155-0032.30 ppm
2015-05-1215050155-0011.20 ppm
2015-05-1215050155-0041.20 ppm
2015-05-1215050149-0021.40 ppm
2015-05-1215050149-0010.830 ppm
2015-05-1215050149-0030.550 ppm
2015-05-1215050149-0040.370 ppm
2015-05-1215050155-0052.10 ppm
2015-05-1315050185-0020.460 ppm
2015-06-0215060015-0014.30 ppm
2015-06-0215060015-0032.80 ppm
2015-06-0215060015-0022.40 ppm
2015-06-0215060015-0051.50 ppm
2015-06-0215060015-0041.30 ppm
2015-06-0215060017-0050.510 ppm
2015-06-0215060017-0040.390 ppm
2015-06-0215060017-0030.360 ppm
2015-06-0215060017-0011.30 ppm
2015-06-0215060017-0020.830 ppm
2015-06-0315060042-0041.20 ppm
2015-06-0315060042-0051.30 ppm
2015-06-0315060042-0020.630 ppm
2015-06-0315060042-0011.20 ppm
2015-06-0315060042-0030.920 ppm
2015-06-0315060040-0040.860 ppm
2015-06-0315060040-0020.460 ppm
2015-06-0315060040-0030.540 ppm
2015-06-0315060040-0050.750 ppm
2015-06-0315060040-0010.410 ppm
2015-06-0415060083-0011.90 ppm
2015-06-0415060083-0021.40 ppm
2015-06-0415060085-0013.30 ppm
2015-06-0415060083-0032.60 ppm
2015-06-0815060108-0041.10 ppm
2015-06-0815060108-0031.20 ppm
2015-06-0815060108-0050.730 ppm
2015-06-0815060108-0021.40 ppm
2015-06-0815060108-0012.20 ppm
2015-06-0915060141-0041.70 ppm
2015-06-0915060141-0031.30 ppm
2015-06-0915060141-0050.770 ppm
2015-06-0915060130-0031.30 ppm
2015-06-0915060130-0041.80 ppm
2015-06-0915060130-0012.40 ppm
2015-06-0915060130-0022.20 ppm
2015-06-0915060141-0011.90 ppm
2015-06-0915060141-0022.30 ppm
2015-06-1115060230-0030.620 ppm
2015-06-1115060230-0010.430 ppm
2015-06-1115060230-0020.350 ppm
2015-07-1415070261-0015.00 ppm
2015-08-0515080029-0015.50 ppm
2015-08-2015070595-0014.50 ppm
2016-05-09S16016300012.40 ppm
2016-05-09S16016300020.921 ppm
2016-05-09S16016300031.74 ppm
2016-05-09S16016300057.41 ppm
2016-05-09S16016300040.549 ppm
2016-05-09S16016290030.418 ppm
2016-05-09S16016290020.356 ppm
2016-05-09S16016290010.365 ppm
2016-05-09S16016290051.03 ppm
2016-05-09S16016290040.679 ppm
2016-05-10S16016730010.340 ppm
2016-05-10S16016730041.01 ppm
2016-05-10S16016730051.24 ppm
2016-05-10S16016730020.421 ppm
2016-05-10S16016730030.463 ppm
2016-05-31S16016760012.35 ppm
2016-05-31S16016760035.27 ppm
2016-05-31S16016760053.04 ppm
2016-05-31S16016760042.72 ppm
2016-05-31S16016760022.63 ppm
2016-05-31S16016770040.577 ppm
2016-05-31S16016770050.673 ppm
2016-05-31S16016770011.45 ppm
2016-05-31S16016780010.541 ppm
2016-05-31S16016780020.424 ppm
2016-05-31S16016770020.527 ppm
2016-05-31S16016770030.509 ppm
2016-05-31S16016780031.31 ppm
2016-05-31S16016780050.897 ppm
2016-05-31S16016780040.796 ppm
2016-06-01S16020270013.61 ppm
2016-06-01S16020270021.56 ppm
2016-06-01S16016790014.81 ppm
2016-06-01S16016790024.12 ppm
2016-06-01S16020270032.06 ppm
2016-06-01S16016790034.17 ppm
2016-06-01S16016790044.10 ppm
2016-06-01S16017890041.47 ppm
2016-06-01S16017890010.748 ppm
2016-06-01S16017890021.35 ppm
2016-06-01S16017890030.937 ppm
2016-06-02S16032810027.49 ppm
2016-06-02S16032810012.62 ppm
2016-06-02S16019220010.901 ppm
2016-06-02S16019220031.24 ppm
2016-06-07S16020200052.07 ppm
2016-06-07S16020200021.48 ppm
2016-06-07S16020200041.69 ppm
2016-06-07S1602020041.69 ppm
2016-06-07S16020200030.974 ppm
2016-06-07S16020200012.15 ppm
2016-06-07S16021050041.52 ppm
2016-06-07S16021050032.18 ppm
2016-06-07S16021050022.75 ppm
2016-06-07S16020200065.39 ppm
2016-06-07S16021050050.576 ppm
2016-06-07S16021050013.00 ppm
2016-06-13S16021260021.13 ppm
2016-06-13S16021260042.03 ppm
2016-06-13S16021260011.55 ppm
2016-06-13S16021260031.61 ppm
2016-06-13S16021870011.19 ppm
2016-06-13S16021870020.709 ppm
2016-06-16S16021880032.75 ppm
2016-06-16S16021880011.06 ppm
2016-06-16S16021880023.14 ppm
2016-07-05S16028000014.44 ppm
2016-07-21S16030990015.32 ppm
2016-08-03S16034770016.47 ppm
2016-08-03S16034770020.920 ppm
2016-10-10S16047130011.02 ppm
2016-10-10S16047130020.656 ppm
2016-10-10S16047130030.472 ppm
2016-10-10S16047130041.29 ppm
2016-11-29S16066100015.34 ppm
2017-01-02S16065970015.23 ppm
2017-01-25S16069170011.34 ppm
2017-05-01S17027830012.35 ppm
2017-05-08S17033120010.906 ppm
2017-05-08S17031960022.37 ppm
2017-05-08S17031960041.000 ppm
2017-05-08S17031960037.22 ppm
2017-05-08S17031950020.347 ppm
2017-05-08S17031950041.27 ppm
2017-05-08S17031950031.42 ppm
2017-05-08S17031950051.000 ppm
2017-05-08S17031950010.416 ppm
2017-05-09S17033080010.905 ppm
2017-05-09S17033080031.46 ppm
2017-05-09S17033080020.439 ppm
2017-05-09S17031830043.64 ppm
2017-05-09S17031830031.63 ppm
2017-05-09S17033080040.924 ppm
2017-05-09S17031830010.346 ppm
2017-05-09S17031830020.936 ppm
2017-05-10S17031840050.874 ppm
2017-05-10S17031840030.500 ppm
2017-05-15S17031850030.836 ppm
2017-05-15S17031850010.409 ppm
2017-05-15S17031850021.03 ppm
2017-06-05S17032700031.94 ppm
2017-06-05S17032700014.90 ppm
2017-06-05S17032700024.17 ppm
2017-06-05S17034310023.23 ppm
2017-06-05S17034310012.94 ppm
2017-06-05S17034310032.47 ppm
2017-06-05S17035860011.31 ppm
2017-06-05S17035860030.669 ppm
2017-06-05S17035860020.466 ppm
2017-06-06S17038080010.749 ppm
2017-06-06S17038080021.44 ppm
2017-06-06S17038080030.959 ppm
2017-06-06S17037350010.400 ppm
2017-06-06S17037350030.482 ppm
2017-06-06S17037350020.852 ppm
2017-06-07S17038090011.55 ppm
2017-06-07S17040040013.22 ppm
2017-06-07S17040040023.92 ppm
2017-06-07S17040030010.503 ppm
2017-06-12S17038110011.13 ppm
2017-06-12S17038130021.10 ppm
2017-06-12S17038110020.683 ppm
2017-06-12S17038120011.96 ppm
2017-06-12S17038100021.43 ppm
2017-06-12S17038100031.58 ppm
2017-06-12S17038130010.914 ppm
2017-06-12S17038100012.04 ppm
2017-06-12S17038120021.45 ppm
2017-06-14S17038140032.36 ppm
2017-06-14S17038140012.72 ppm
2017-06-14S17038140022.14 ppm
2017-06-14S17038150020.611 ppm
2017-06-14S17038150041.24 ppm
2017-06-14S17038150030.465 ppm
2017-06-27S17038160013.16 ppm
2017-07-19S17042780011.65 ppm
2017-07-24S17042940012.01 ppm
2017-08-07S17044490017.78 ppm
2017-08-22S17051560013.78 ppm
2017-08-29S17052950011.83 ppm
2017-10-11S17068040011.14 ppm
2018-05-07S18030410010.931 ppm
2018-05-07S18030410022.47 ppm
2018-05-07S18030410030.772 ppm
2018-05-07S18030410040.948 ppm
2018-05-07S18030410050.383 ppm
2018-05-07S18030410060.671 ppm
2018-05-07S18030440010.348 ppm
2018-05-07S18030440021.48 ppm
2018-05-07S18030440031.28 ppm
2018-05-07S18030440040.355 ppm
2018-05-07S18030440050.339 ppm
2018-05-07S18030440061.90 ppm
2018-05-31S18030420010.847 ppm
2018-05-31S18030420022.25 ppm
2018-06-05S18031280013.34 ppm
2018-06-05S18031280021.97 ppm
2018-06-05S18031280031.67 ppm
2018-06-05S18038090012.88 ppm
2018-06-05S18038090021.74 ppm
2018-06-05S18038090030.970 ppm
2018-06-05S18038090040.804 ppm
2018-06-06S18030430012.23 ppm
2018-06-06S18030430021.59 ppm
2018-06-06S18030430032.41 ppm
2018-06-06S18030430044.81 ppm
2018-06-06S18031530010.960 ppm
2018-06-06S18031530020.497 ppm
2018-06-06S18031530030.502 ppm
2018-06-06S18031530041.07 ppm
2018-06-06S18031530051.64 ppm
2018-06-07S18031720010.568 ppm
2018-06-07S18031720020.488 ppm
2018-06-07S18031720040.680 ppm
2018-06-13S18039680013.96 ppm
2018-06-13S18039680023.71 ppm
2018-06-14S18037800011.71 ppm
2018-06-14S18037800025.33 ppm
2018-06-14S18037800035.08 ppm
2018-06-14S18037800043.63 ppm
2018-06-14S18037800054.55 ppm
2018-06-19S18037480011.67 ppm
2018-06-19S18037480022.99 ppm
2018-06-19S18037480031.85 ppm
2018-06-19S18037480042.25 ppm
2018-06-19S18037480050.938 ppm
2018-06-21S18041470010.445 ppm
2018-06-21S18041470020.468 ppm
2018-06-26S18042560011.21 ppm
2018-06-26S18042560021.77 ppm
2018-06-26S18042560031.23 ppm
2018-06-26S18042560040.690 ppm
2018-06-26S18042560052.16 ppm
2018-06-26S18042560061.59 ppm
2018-06-27S18042570012.64 ppm
2018-06-27S18042570023.80 ppm
2018-06-27S18042570031.06 ppm
2018-07-03S18037970010.419 ppm
2018-07-18S18042580015.23 ppm
2018-07-18S18042580025.13 ppm
2018-07-24S18042590013.56 ppm
2018-08-29S18045820015.14 ppm
2019-04-01S19030670011.20 ppm
2019-04-01S19038650011.91 ppm
2019-04-01S19038650022.42 ppm
2019-04-01S19038650031.44 ppm
2019-04-01S19038660061.31 ppm
2019-04-01S19038660071.15 ppm
2019-04-01S19038660080.868 ppm
2019-04-01S19038660091.12 ppm
2019-04-02S19039940012.84 ppm
2019-04-02S19039940051.98 ppm
2019-04-02S19039940063.02 ppm
2019-04-02S19039960012.37 ppm
2019-04-02S19039960021.77 ppm
2019-04-02S19039960030.719 ppm
2019-04-02S19039960041.28 ppm
2019-04-02S19039960052.50 ppm
2019-04-02S19039960062.91 ppm
2019-04-02S19040160012.34 ppm
2019-04-03S19040300011.02 ppm
2019-04-03S19040300021.64 ppm
2019-04-30S19070760011.50 ppm
2019-05-07S19075880010.990 ppm
2019-05-28S19104290023.88 ppm
2019-05-28S19104290035.88 ppm
2019-05-28S19104290046.05 ppm
2019-05-28S19104290052.70 ppm
2019-05-28S19104310010.480 ppm
2019-05-28S19104310020.435 ppm
2019-05-28S19104310030.783 ppm
2019-05-28S19104310040.642 ppm
2019-05-28S19104310051.03 ppm
2019-05-28S19104310063.37 ppm
2019-05-29S19106160011.99 ppm
2019-05-29S19106160020.946 ppm
2019-05-29S19106160030.946 ppm
2019-05-29S19106160040.555 ppm
2019-05-29S19106160051.37 ppm
2019-05-29S19106180021.07 ppm
2019-05-29S19106180030.926 ppm
2019-05-29S19106180041.68 ppm
2019-05-29S19106180050.780 ppm
2019-05-30S19114260013.62 ppm
2019-05-30S19114260020.697 ppm
2019-05-30S19114260030.974 ppm
2019-05-30S19114260040.974 ppm
2019-07-02S19162520011.81 ppm
2019-07-17S19182670011.17 ppm
2019-07-17S19182670021.08 ppm
2019-08-20S19238270011.02 ppm
2019-10-22S19512270011.84 ppm