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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Moore

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.

MORE ABOUT THIS CONTAMINANT

 

140

Samples

0

Samples exceeding legal limit (MCL)

116

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.487 ppm21210.360 ppm - 0.720 ppm
20150.423 ppm2421ND - 0.890 ppm
20160.411 ppm2117ND - 0.730 ppm
20170.288 ppm2318ND - 0.500 ppm
20180.310 ppm2519ND - 0.590 ppm
20190.376 ppm2620ND - 0.760 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
2014-03-134C14011-050.500 ppm
2014-03-134C14011-060.400 ppm
2014-03-134C14011-070.650 ppm
2014-03-134C14011-080.490 ppm
2014-08-114H12133-010.550 ppm
2014-08-114H12133-020.550 ppm
2014-08-114H12133-040.720 ppm
2014-08-114H12133-060.360 ppm
2014-08-184H19104-050.470 ppm
2014-08-184H19104-060.460 ppm
2014-08-184H19104-070.410 ppm
2014-10-094J10006-030.720 ppm
2014-10-094J10006-040.440 ppm
2014-10-094J10006-050.440 ppm
2014-10-094J10006-060.400 ppm
2014-10-094J10006-070.510 ppm
2014-10-094J10006-080.660 ppm
2014-12-044L05007-010.370 ppm
2014-12-044L05007-020.390 ppm
2014-12-044L05007-030.360 ppm
2014-12-044L05007-070.370 ppm
2015-03-105C10136-010.890 ppm
2015-03-105C10136-020.700 ppm
2015-03-105C10136-03ND
2015-03-105C10136-04ND
2015-03-105C10136-050.350 ppm
2015-03-165C17090-010.640 ppm
2015-03-165C17090-020.530 ppm
2015-03-165C17090-030.680 ppm
2015-06-245F26009-030.319 ppm
2015-06-245F26009-040.570 ppm
2015-06-245F26009-050.244 ppm
2015-12-085L08161-030.550 ppm
2015-12-085L08161-040.570 ppm
2015-12-085L08161-050.380 ppm
2015-12-085L08161-060.290 ppm
2015-12-085L08161-070.380 ppm
2015-12-085L08161-100.540 ppm
2015-12-225L22074-060.300 ppm
2015-12-225L22085-01ND
2015-12-225L22085-020.300 ppm
2015-12-225L22085-030.520 ppm
2015-12-225L22085-040.260 ppm
2015-12-225L22085-050.420 ppm
2015-12-225L22085-060.730 ppm
2016-02-226B23061-020.580 ppm
2016-02-226B23061-030.340 ppm
2016-02-226B23061-050.570 ppm
2016-02-236B23061-010.730 ppm
2016-02-236B23061-04ND
2016-03-246C25003-010.330 ppm
2016-03-246C25003-020.490 ppm
2016-03-246C25003-03ND
2016-03-246C25003-04ND
2016-04-286D29012-040.530 ppm
2016-04-286D29012-070.290 ppm
2016-04-286D29012-080.480 ppm
2016-08-186H19025-030.720 ppm
2016-08-186H19025-040.580 ppm
2016-12-286L29051-010.420 ppm
2016-12-286L29051-020.420 ppm
2016-12-286L29051-03ND
2016-12-286L29051-040.570 ppm
2016-12-286L29051-050.570 ppm
2016-12-286L29051-060.600 ppm
2016-12-286L29051-070.420 ppm
2017-05-157E16017-050.270 ppm
2017-09-117I12038-030.360 ppm
2017-09-117I12038-040.390 ppm
2017-09-117I12038-05ND
2017-10-037J03118-01ND
2017-10-037J03118-02ND
2017-10-037J03118-030.500 ppm
2017-10-037J03118-040.370 ppm
2017-10-037J03118-050.350 ppm
2017-10-037J03118-060.370 ppm
2017-10-037J03118-070.500 ppm
2017-10-037J03118-080.300 ppm
2017-10-317K01144-020.380 ppm
2017-10-317K01144-04ND
2017-10-317K01144-050.340 ppm
2017-10-317K01144-070.260 ppm
2017-10-317K01144-080.260 ppm
2017-10-317K01144-090.410 ppm
2017-12-147L15016-020.280 ppm
2017-12-147L15016-030.500 ppm
2017-12-147L15016-040.360 ppm
2017-12-147L15016-050.430 ppm
2017-12-147L15016-06ND
2018-03-13AC13155-010.390 ppm
2018-03-13AC13155-020.470 ppm
2018-03-13AC13155-030.590 ppm
2018-03-13AC13155-040.400 ppm
2018-03-13AC13155-05ND
2018-03-13AC13155-06ND
2018-03-28AC29087-010.510 ppm
2018-03-28AC29087-040.520 ppm
2018-03-29AC29087-020.380 ppm
2018-03-29AC29087-030.340 ppm
2018-06-11AF12163-01ND
2018-06-11AF12163-02ND
2018-06-11AF12163-030.490 ppm
2018-06-11AF12163-04ND
2018-06-11AF12163-050.330 ppm
2018-08-13AH14226-010.290 ppm
2018-08-13AH14228-08ND
2018-11-19AK20110-050.260 ppm
2018-11-19AK20110-090.290 ppm
2018-11-19AK20110-100.370 ppm
2018-12-20AL21007-010.330 ppm
2018-12-20AL21007-020.580 ppm
2018-12-20AL21007-030.570 ppm
2018-12-20AL21007-040.330 ppm
2018-12-27AL28012-010.299 ppm
2019-03-26BC26100-01ND
2019-03-26BC26100-020.350 ppm
2019-03-26BC26100-03ND
2019-03-26BC26100-040.480 ppm
2019-03-26BC26100-05ND
2019-03-26BC26100-060.420 ppm
2019-03-27BC27112-010.280 ppm
2019-03-27BC27112-020.310 ppm
2019-03-27BC27112-030.700 ppm
2019-03-27BC27112-040.320 ppm
2019-03-27BC27112-050.470 ppm
2019-03-27BC27112-060.330 ppm
2019-08-27BH27135-030.600 ppm
2019-08-27BH27135-040.330 ppm
2019-08-27BH27135-050.520 ppm
2019-08-27BH27135-06ND
2019-09-16BI17137-060.630 ppm
2019-09-16BI17137-070.290 ppm
2019-09-24BI24149-010.580 ppm
2019-09-24BI24149-020.760 ppm
2019-09-24BI24149-030.710 ppm
2019-09-24BI24149-04ND
2019-09-24BI24149-05ND
2019-09-24BI24149-060.680 ppm
2019-09-24BI24149-070.670 ppm
2019-09-24BI24149-080.340 ppm