EWG's Tap Water Database — 2019 UPDATE


Nitrate and nitrite

City of Steubenville

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. 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
20150.838 ppm12120.550 ppm - 1.30 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 health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL) 10 ppm

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
2015-01-13A1502134541.30 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