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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Town of Gilbert

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.

 

175

Samples

0

Samples exceeding legal limit (MCL)

169

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20123.39 ppm4239ND - 7.40 ppm
20132.98 ppm2725ND - 6.80 ppm
20143.62 ppm2019ND - 8.00 ppm
20154.15 ppm29290.290 ppm - 7.20 ppm
20164.15 ppm28280.210 ppm - 6.80 ppm
20173.85 ppm29290.230 ppm - 6.40 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
2012-01-09PVA0475-01I0.280 ppm
2012-01-09PVA0476-013.40 ppm
2012-01-12PVA0814-014.80 ppm
2012-01-12PVA0815-016.40 ppm
2012-01-17PVA1028-015.80 ppm
2012-01-18PVA1137-011.70 ppm
2012-01-19PVA1240-013.30 ppm
2012-01-25PVA1556-011.80 ppm
2012-02-13PVB0897-011.70 ppm
2012-02-13PVB0898-010.810 ppm
2012-02-13PVB0899-011.90 ppm
2012-02-28PVB1867-01B0.860 ppm
2012-03-01PVC0073-01B0.230 ppm
2012-03-15PVC1257-01I7.30 ppm
2012-03-27PVC1957-014.20 ppm
2012-04-02PVD0064-010.450 ppm
2012-04-02PVD0073-01ND
2012-04-03PVD0158-016.20 ppm
2012-04-03PVD0160-015.00 ppm
2012-04-09PVD0611-01I0.980 ppm
2012-04-09PVD0612-013.70 ppm
2012-04-23PVD1652-013.00 ppm
2012-05-01PVE0080-015.50 ppm
2012-05-02PVE0219-01I7.40 ppm
2012-07-02PVG0059-016.10 ppm
2012-07-02PVG0060-014.90 ppm
2012-07-02PVG0062-01BND
2012-07-02PVG0068-01B1.80 ppm
2012-07-09PVG0476-014.30 ppm
2012-07-24PVG1658-017.20 ppm
2012-07-26PVG1876-017.20 ppm
2012-08-01PVH0103-013.00 ppm
2012-08-28PVH2120-012.70 ppm
2012-08-28PVH2122-010.680 ppm
2012-09-04PVI0086-012.90 ppm
2012-10-01PVJ0063-016.10 ppm
2012-10-01PVJ0070-01I6.50 ppm
2012-10-01PVJ0072-01IND
2012-10-09PVJ0683-014.30 ppm
2012-10-24PVJ1673-012.50 ppm
2012-12-05PVL0292-015.00 ppm
2012-12-20PVL1426-01I0.310 ppm
2013-01-16PWA1110-012.00 ppm
2013-01-17PWA1114-013.60 ppm
2013-01-28PWA1663-013.20 ppm
2013-01-28PWA1665-016.70 ppm
2013-01-29PWA1744-011.20 ppm
2013-01-29PWA1749-012.00 ppm
2013-02-07PWB0485-016.80 ppm
2013-02-11PWB0696-011.60 ppm
2013-02-13PWB0905-010.390 ppm
2013-04-08PWD0470-013.30 ppm
2013-04-15550-735-1I6.30 ppm
2013-04-24550-1401-1I1.90 ppm
2013-07-29550-7634-1I3.00 ppm
2013-07-29550-7636-11.70 ppm
2013-07-30550-7713-1ND
2013-07-30550-7716-1I0.710 ppm
2013-07-31550-7810-1I2.10 ppm
2013-07-31550-7815-1I6.30 ppm
2013-08-07550-8302-13.50 ppm
2013-08-12550-8579-14.30 ppm
2013-08-13550-8672-11.70 ppm
2013-08-26550-9435-1IND
2013-08-27550-9504-1I2.60 ppm
2013-08-29550-9668-1I3.90 ppm
2013-10-15201310150527I3.40 ppm
2013-10-22201310220364I2.40 ppm
2013-11-04201311040082I5.80 ppm
2014-01-27201401270086IND
2014-01-2720140270088I5.50 ppm
2014-01-28201401280465I2.00 ppm
2014-01-28201401280468I3.30 ppm
2014-01-28201401280470I1.10 ppm
2014-01-28201401280487I3.70 ppm
2014-01-28201401280488I4.80 ppm
2014-02-04201402040530I2.80 ppm
2014-02-04201402040531I6.10 ppm
2014-02-11201402110334I4.20 ppm
2014-02-11201402110335I0.310 ppm
2014-02-11201402110336I0.790 ppm
2014-03-04201403040337I3.30 ppm
2014-03-04201403040338I1.40 ppm
2014-03-31201403310120I3.70 ppm
2014-04-28201404290156I6.60 ppm
2014-04-28201404290167I3.60 ppm
2014-08-12201408120488I5.40 ppm
2014-10-07201410070503I5.80 ppm
2014-12-02201412090218I8.00 ppm
2015-01-14201501140604I0.480 ppm
2015-01-27201501270254I3.70 ppm
2015-01-27201501270255I1.60 ppm
2015-01-28201501280356I6.20 ppm
2015-01-28201501280362I1.10 ppm
2015-01-28201501280369I6.30 ppm
2015-02-03201502030356I3.80 ppm
2015-02-05201502050481I1.90 ppm
2015-02-10201502100321I2.20 ppm
2015-02-11201502110463I3.10 ppm
2015-02-17201502170327I2.40 ppm
2015-02-18201502180271I3.10 ppm
2015-02-24201502240338I3.20 ppm
2015-02-24201502240346I3.90 ppm
2015-02-24201502240350I5.60 ppm
2015-03-02201503020321I3.90 ppm
2015-04-01201504010566I0.290 ppm
2015-04-01201504010572I5.60 ppm
2015-04-01201504010667I6.40 ppm
2015-04-02201504020191I6.60 ppm
2015-04-02201504020192I3.80 ppm
2015-07-13201507130169I5.60 ppm
2015-07-21201507220475I7.20 ppm
2015-08-17201508170182I6.40 ppm
2015-09-10201509100489I6.20 ppm
2015-10-12201510120115I6.30 ppm
2015-10-12201510120130I6.60 ppm
2015-11-04201511040191I6.40 ppm
2015-12-02201512020672I0.570 ppm
2016-01-05201601070012I0.870 ppm
2016-01-06201601070016I0.210 ppm
2016-01-06201601070018I3.30 ppm
2016-01-12201601120222I5.70 ppm
2016-01-19201601190321I1.70 ppm
2016-01-19201601190354I6.70 ppm
2016-01-26201601260298I0.710 ppm
2016-01-26201601260338I1.30 ppm
2016-02-08201602080042I2.10 ppm
2016-02-08201602080053I5.50 ppm
2016-02-17201602170370I6.50 ppm
2016-02-17201602170376I4.00 ppm
2016-03-02201603020441I3.30 ppm
2016-03-23201603230459I2.20 ppm
2016-04-06201604060435I6.50 ppm
2016-04-06201604060444I5.40 ppm
2016-04-07201604070686I6.30 ppm
2016-04-19201604190185I3.60 ppm
2016-05-31201605310460I2.90 ppm
2016-06-28201606280521I3.60 ppm
2016-07-06201607060623I5.40 ppm
2016-07-12201607130201I6.20 ppm
2016-07-20201607270447I6.80 ppm
2016-09-07201609070506I3.60 ppm
2016-10-05201610050431I5.30 ppm
2016-10-10201610100334I6.40 ppm
2016-10-10201610100335I3.60 ppm
2016-11-29201611290449I6.40 ppm
2017-01-04201701040808 I0.680 ppm
2017-01-0420170104081510.230 ppm
2017-01-0420170104082415.40 ppm
2017-01-1720170117029816.20 ppm
2017-01-1720170117030011.60 ppm
2017-01-1720170117030616.40 ppm
2017-01-1720170117030911.10 ppm
2017-01-1720170117033213.60 ppm
2017-01-3120170131033212.10 ppm
2017-01-3120170131033310.870 ppm
2017-02-08201702080211 I5.10 ppm
2017-02-1520170215059312.10 ppm
2017-03-29201703290514I3.90 ppm
2017-04-05201704050584I2.80 ppm
2017-04-05201704050683I5.50 ppm
2017-04-05201704050685I3.80 ppm
2017-05-01201705010511I6.00 ppm
2017-06-06201706060727I4.60 ppm
2017-06-06201706060731I4.20 ppm
2017-07-27201707280114I3.80 ppm
2017-07-27201707280128I5.30 ppm
2017-08-01201708010744I6.40 ppm
2017-08-01201708010745I3.90 ppm
2017-10-04201710040630I6.20 ppm
2017-10-04201710040631I5.10 ppm
2017-10-04201710040632I2.60 ppm
2017-10-04201710040636I3.70 ppm
2017-10-30201710300297I6.40 ppm
2017-10-30201710300306I2.00 ppm