EWG's Tap Water Database — 2019 UPDATE



City of Steubenville

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.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20120.923 ppm12120.600 ppm - 1.30 ppm
20131.03 ppm12120.620 ppm - 1.50 ppm
20140.914 ppm12120.620 ppm - 1.25 ppm
20150.828 ppm12120.550 ppm - 1.18 ppm
20160.843 ppm12120.590 ppm - 1.05 ppm
20170.800 ppm12120.570 ppm - 1.11 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
2012-01-1093000861840.810 ppm
2012-02-1493000869190.820 ppm
2012-03-1393000990690.740 ppm
2012-04-1093001086390.750 ppm
2012-05-0893001192390.600 ppm
2012-06-1293001163260.890 ppm
2012-07-0993000054491.03 ppm
2012-08-1493000112171.05 ppm
2012-09-1193000237171.30 ppm
2012-10-0993000245401.18 ppm
2012-11-1393000384961.02 ppm
2012-12-1193000485270.880 ppm
2013-01-0893000485300.900 ppm
2013-02-1293000602750.860 ppm
2013-03-1293000718951.06 ppm
2013-04-0993000768220.740 ppm
2013-05-1493000851830.620 ppm
2013-06-1193001120990.960 ppm
2013-07-0993000853791.20 ppm
2013-08-13A1301156851.000 ppm
2013-09-10A1301156901.50 ppm
2013-10-08A1301156961.05 ppm
2013-11-12A1301157011.30 ppm
2013-12-10A1301043461.20 ppm
2014-01-14A1401157071.10 ppm
2014-02-11A1401195021.000 ppm
2014-03-11A1401336371.25 ppm
2014-04-08A1401364780.900 ppm
2014-05-13A1401415950.620 ppm
2014-06-10A1401477350.950 ppm
2014-07-08A1401477390.820 ppm
2014-08-12A1401654330.700 ppm
2014-09-09A1401702210.940 ppm
2014-10-14A1401765521.10 ppm
2014-11-11A1402016220.750 ppm
2014-12-09A1402016260.840 ppm
2015-01-13A1502134541.18 ppm
2015-02-10A1502306191.03 ppm
2015-03-10A1502405140.920 ppm
2015-04-14A1502551720.720 ppm
2015-05-12A1502629760.700 ppm
2015-06-09A1502652200.880 ppm
2015-07-14A1502781820.550 ppm
2015-08-11A1502822650.650 ppm
2015-09-08A1502882560.760 ppm
2015-10-13A1502994551.000 ppm
2015-11-10A1502994590.770 ppm
2015-12-08A1503092840.770 ppm
2016-01-12A1603345690.940 ppm
2016-02-09A1601245231.02 ppm
2016-03-08A1603279500.790 ppm
2016-04-12A1603429960.590 ppm
2016-05-10A1603501940.600 ppm
2016-06-14A1603610190.770 ppm
2016-07-12A1604039310.980 ppm
2016-08-09A1604029200.790 ppm
2016-09-06A1604029230.880 ppm
2016-10-11A1604029291.05 ppm
2016-11-08A1604029330.880 ppm
2016-12-13A1604039290.820 ppm
2017-01-10A1704039390.800 ppm
2017-02-14A1704128930.820 ppm
2017-03-14A1704128880.780 ppm
2017-04-11A1704128920.650 ppm
2017-05-09A1704242200.570 ppm
2017-06-13A1704248040.700 ppm
2017-07-11A1704307950.650 ppm
2017-08-08A1704351660.770 ppm
2017-09-12A1704530181.11 ppm
2017-10-10A1704608391.03 ppm
2017-11-14A1704627950.770 ppm
2017-12-12A1704765100.950 ppm