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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Guernsey County Water Department

NOTE: Guernsey County Water Department purchases water from City of Cambridge which is required to test for nitrate. Sample information shown below was taken by City of Cambridge.

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.

 

72

Samples

0

Samples exceeding legal limit (MCL)

56

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.231 ppm1210ND - 0.570 ppm
20130.166 ppm1210ND - 0.475 ppm
20140.223 ppm128ND - 0.750 ppm
20150.745 ppm12120.180 ppm - 4.70 ppm
20160.539 ppm12120.280 ppm - 1.07 ppm
20170.493 ppm12120.150 ppm - 1.20 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

NOTE: Guernsey County Water Department purchases water from City of Cambridge which is required to test for nitrate. Sample information shown below was taken by City of Cambridge.

Date Lab ID Result
2012-01-047010370.570 ppm
2012-02-017020150.395 ppm
2012-03-077030440.160 ppm
2012-04-047040380.105 ppm
2012-05-02705042ND
2012-06-067060550.195 ppm
2012-07-037070190.240 ppm
2012-08-01708039ND
2012-09-047090070.400 ppm
2012-10-037100390.342 ppm
2012-11-077110680.210 ppm
2012-12-057120470.150 ppm
2013-01-02801022ND
2013-02-058020420.195 ppm
2013-03-208031840.475 ppm
2013-04-038040370.174 ppm
2013-05-018050070.120 ppm
2013-06-058060530.105 ppm
2013-07-038070510.280 ppm
2013-08-078080780.210 ppm
2013-09-048090410.125 ppm
2013-10-028100450.210 ppm
2013-11-068110690.1000 ppm
2013-12-04812054ND
2014-01-08901067ND
2014-02-05902068ND
2014-03-059030670.750 ppm
2014-04-029040430.409 ppm
2014-05-07905103ND
2014-06-049060360.160 ppm
2014-07-169072140.250 ppm
2014-08-069080470.140 ppm
2014-09-179092660.710 ppm
2014-10-01910008ND
2014-11-059110490.135 ppm
2014-12-039120440.119 ppm
2015-01-071010620.570 ppm
2015-02-041020480.180 ppm
2015-03-041030480.370 ppm
2015-04-011040100.430 ppm
2015-05-061050814.70 ppm
2015-06-171062550.480 ppm
2015-07-091071390.430 ppm
2015-08-051080720.240 ppm
2015-09-021090400.305 ppm
2015-10-071100990.450 ppm
2015-11-041110620.290 ppm
2015-12-021120390.500 ppm
2016-01-062010710.760 ppm
2016-02-032020670.590 ppm
2016-03-022030401.07 ppm
2016-04-062040730.280 ppm
2016-05-042050660.340 ppm
2016-06-012060100.542 ppm
2016-07-202072470.570 ppm
2016-08-032080910.315 ppm
2016-09-072091290.580 ppm
2016-10-052100720.438 ppm
2016-11-022110380.360 ppm
2016-12-072120800.620 ppm
2017-01-043010620.500 ppm
2017-02-013020070.600 ppm
2017-03-013030070.355 ppm
2017-04-053040530.530 ppm
2017-05-033050770.150 ppm
2017-06-073061080.523 ppm
2017-07-053070560.255 ppm
2017-08-023080610.480 ppm
2017-09-063090710.295 ppm
2017-10-043100691.20 ppm
2017-11-013110070.510 ppm
2017-12-063120790.522 ppm