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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Bethpage WD

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.

 

549

Samples

0

Samples exceeding legal limit (MCL)

545

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20143.17 ppm11110.540 ppm - 5.66 ppm
20153.69 ppm14140.510 ppm - 6.87 ppm
20163.61 ppm5150ND - 6.77 ppm
20173.82 ppm176175ND - 8.00 ppm
20183.41 ppm151149ND - 7.30 ppm
20193.64 ppm1461460.640 ppm - 8.10 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
2014-05-08140553-002-PRI1.76 ppm
2014-05-081405553-001-PRI4.21 ppm
2014-05-081405553-003-PRI3.09 ppm
2014-05-091405686-005-PRI3.36 ppm
2014-05-091405686-001-PRI5.66 ppm
2014-05-091405686-002-PRI3.81 ppm
2014-05-091405686-003-PRI0.540 ppm
2014-05-091405686-006-PRI3.43 ppm
2014-05-091405686-004-PEI3.30 ppm
2014-05-131405879-001-PRI0.890 ppm
2014-05-131405877-001-PRI4.84 ppm
2015-03-231503F54-001 PRI0.510 ppm
2015-05-121505847-001 PRI4.45 ppm
2015-05-121505792-003 PRI4.89 ppm
2015-05-121505847-003 PRI3.76 ppm
2015-05-121505792-005 PRI3.86 ppm
2015-05-121505792-002 PRI1.08 ppm
2015-05-121505792-006 PRI6.87 ppm
2015-05-121505847-002 PRI3.20 ppm
2015-05-121505792-004 PRI3.78 ppm
2015-05-121505792-001 PRI5.61 ppm
2015-05-121505792-007 PRI3.69 ppm
2015-05-121505792-008 PRI2.88 ppm
2015-09-241509J66-001 PRI6.10 ppm
2015-09-241509J66-002 PRI0.940 ppm
2016-04-191604H82-001 PRI4.67 ppm
2016-06-071606552-011 PRI4.10 ppm
2016-06-071606552-003 PRI4.05 ppm
2016-06-071606552-013 PRI1.44 ppm
2016-06-071606552-007 PRI3.68 ppm
2016-06-071606552-012 PRI3.05 ppm
2016-06-071606552-001 PRI5.20 ppm
2016-06-071606552-010 PRI6.77 ppm
2016-06-071606552-009 PRI3.43 ppm
2016-06-071606552-002 PRI5.20 ppm
2016-06-071606552-006 PRI1.01 ppm
2016-06-071606552-008 PRI2.94 ppm
2016-06-071606552-004 PRI3.25 ppm
2016-06-071606552-005 PRI3.33 ppm
2016-10-037010160016.20 ppm
2016-10-034010160024.50 ppm
2016-10-037010160033.60 ppm
2016-10-037010040023.50 ppm
2016-10-037010040033.50 ppm
2016-10-037010040013.80 ppm
2016-10-047010860022.80 ppm
2016-10-047010900025.50 ppm
2016-10-047010860013.80 ppm
2016-10-047010900015.40 ppm
2016-10-047010860032.90 ppm
2016-10-047010850011.10 ppm
2016-11-017033290033.50 ppm
2016-11-017033290023.50 ppm
2016-11-017033420015.80 ppm
2016-11-017033400012.00 ppm
2016-11-017033380010.780 ppm
2016-11-017033420023.90 ppm
2016-11-017033420033.90 ppm
2016-11-02703443003ND
2016-11-027034430023.00 ppm
2016-11-027034410011.10 ppm
2016-11-027034390025.70 ppm
2016-11-027034430014.00 ppm
2016-12-017057570023.70 ppm
2016-12-017057550024.60 ppm
2016-12-017057570014.20 ppm
2016-12-017057550034.10 ppm
2016-12-017057590012.20 ppm
2016-12-017057550016.10 ppm
2016-12-017057570033.70 ppm
2016-12-017057540020.840 ppm
2016-12-027058560016.10 ppm
2016-12-027058640023.30 ppm
2016-12-027058640033.80 ppm
2016-12-027058640014.20 ppm
2016-12-027058600011.30 ppm
2017-01-037081240020.900 ppm
2017-01-037081190023.70 ppm
2017-01-037081210034.20 ppm
2017-01-037081190033.70 ppm
2017-01-037081220012.20 ppm
2017-01-037081190014.10 ppm
2017-01-037081210016.00 ppm
2017-01-037081210024.50 ppm
2017-01-047082280011.30 ppm
2017-01-047082260033.70 ppm
2017-01-047082260023.20 ppm
2017-01-047082300016.10 ppm
2017-01-047082260014.10 ppm
2017-02-0170102960020.780 ppm
2017-02-0170103010024.30 ppm
2017-02-0170102990014.00 ppm
2017-02-0170102990023.60 ppm
2017-02-0170102970011.90 ppm
2017-02-0170103010015.80 ppm
2017-02-0170103010033.70 ppm
2017-02-0170102990033.60 ppm
2017-02-0270104280014.10 ppm
2017-02-0270104280023.20 ppm
2017-02-0270104280033.60 ppm
2017-02-027010431001ND
2017-02-0270104330011.30 ppm
2017-03-0170123240030.370 ppm
2017-03-0170123300013.80 ppm
2017-03-0170123300063.60 ppm
2017-03-0170123300054.10 ppm
2017-03-0170123300045.50 ppm
2017-03-0170123300072.00 ppm
2017-03-0170123300023.30 ppm
2017-03-0170123300033.30 ppm
2017-03-0270124440053.80 ppm
2017-03-0270124440043.10 ppm
2017-03-0270124440011.30 ppm
2017-03-0270124440065.60 ppm
2017-03-0270124440034.10 ppm
2017-04-0370147020074.60 ppm
2017-04-0370147020057.50 ppm
2017-04-0370147020033.40 ppm
2017-04-0370147020064.50 ppm
2017-04-0370147020023.70 ppm
2017-04-0370147070030.370 ppm
2017-04-0370147020043.40 ppm
2017-04-0370147020012.20 ppm
2017-04-0370147070024.50 ppm
2017-04-0470147930041.30 ppm
2017-04-0470147930023.00 ppm
2017-04-0470147930034.50 ppm
2017-04-0470147930014.10 ppm
2017-04-0470147930066.00 ppm
2017-04-1170154940045.30 ppm
2017-04-1170154940035.30 ppm
2017-04-117015498001-PRI5.30 ppm
2017-04-287017197011-PRI4.70 ppm
2017-04-287017197008-PRI2.90 ppm
2017-04-287017197009-PRI4.10 ppm
2017-04-287017197010-PRI8.00 ppm
2017-04-287017197001-PRI5.50 ppm
2017-04-287017197006-PRI1.30 ppm
2017-04-287017197003-PRI3.90 ppm
2017-04-287017197007-PRI4.40 ppm
2017-04-287017197002-PRI7.60 ppm
2017-04-287017197004-PRI4.00 ppm
2017-04-287017197013-PRI2.90 ppm
2017-04-287017197012-PRI4.90 ppm
2017-04-287017197005-PRI3.70 ppm
2017-05-0170173300072.20 ppm
2017-05-0170173300043.80 ppm
2017-05-0170173300024.80 ppm
2017-05-0170173300090.920 ppm
2017-05-0170173300017.80 ppm
2017-05-0170173300053.60 ppm
2017-05-0170173300035.10 ppm
2017-05-0170173300063.60 ppm
2017-05-0270174190041.30 ppm
2017-05-0270174190065.40 ppm
2017-05-0270174190023.10 ppm
2017-05-0270174190075.50 ppm
2017-05-0270174190033.80 ppm
2017-05-0570174190014.10 ppm
2017-06-0170200870057.30 ppm
2017-06-0170200870084.60 ppm
2017-06-0170200870012.20 ppm
2017-06-0170200870074.70 ppm
2017-06-0170200870023.70 ppm
2017-06-0170200870064.60 ppm
2017-06-0170200870094.70 ppm
2017-06-0170200870043.40 ppm
2017-06-0170200870033.40 ppm
2017-06-0270201880025.80 ppm
2017-06-0270202070011.20 ppm
2017-06-0270201950014.00 ppm
2017-06-0270201950033.20 ppm
2017-06-0270201950023.10 ppm
2017-06-0270201880015.80 ppm
2017-07-0370230570017.20 ppm
2017-07-0370230510033.40 ppm
2017-07-0370230510014.00 ppm
2017-07-0370230600012.30 ppm
2017-07-0370230510023.30 ppm
2017-07-0370230570034.60 ppm
2017-07-0370230570024.60 ppm
2017-07-0570231490014.10 ppm
2017-07-0570231490034.30 ppm
2017-07-0570231490076.40 ppm
2017-07-0570231490065.80 ppm
2017-07-0570231490041.000 ppm
2017-07-0570231490023.10 ppm
2017-08-0270259360011.20 ppm
2017-08-0270259360053.90 ppm
2017-08-0270259360033.80 ppm
2017-08-0270259250012.40 ppm
2017-08-0270259360042.90 ppm
2017-08-0370261040022.00 ppm
2017-08-0370260440013.90 ppm
2017-08-0370261040014.60 ppm
2017-08-0370260440033.20 ppm
2017-08-0370260440045.70 ppm
2017-08-0370260440023.20 ppm
2017-08-1470271340025.20 ppm
2017-08-1470271340015.70 ppm
2017-09-0170287330061.30 ppm
2017-09-0170287330033.90 ppm
2017-09-0170287330043.10 ppm
2017-09-0170287330026.10 ppm
2017-09-0170287330053.70 ppm
2017-09-0170287330015.90 ppm
2017-09-0570288220017.10 ppm
2017-09-0570288220062.40 ppm
2017-09-0570288220053.20 ppm
2017-09-0570288220034.60 ppm
2017-09-0570288220043.20 ppm
2017-09-0570288220024.40 ppm
2017-09-0870292530011.90 ppm
2017-10-0270315130013.80 ppm
2017-10-0270315230022.60 ppm
2017-10-0270315190014.70 ppm
2017-10-0270315230017.50 ppm
2017-10-0270315230035.30 ppm
2017-10-0270315130023.20 ppm
2017-10-0270315130033.30 ppm
2017-10-0370317710022.90 ppm
2017-10-0370317760015.70 ppm
2017-10-0370317710013.70 ppm
2017-10-0370317710032.90 ppm
2017-10-0370317760025.70 ppm
2017-10-2370337240011.20 ppm
2017-11-0170344710035.10 ppm
2017-11-0170344680033.10 ppm
2017-11-0170344710024.30 ppm
2017-11-0170344680023.00 ppm
2017-11-0170344710016.80 ppm
2017-11-0170344680013.30 ppm
2017-11-0270346120032.30 ppm
2017-11-0270346150025.70 ppm
2017-11-0270346120022.40 ppm
2017-11-0270346210011.000 ppm
2017-11-0270346120013.40 ppm
2017-11-0270346150015.50 ppm
2017-11-0770350570012.40 ppm
2017-12-0470370250012.70 ppm
2017-12-0470370220024.20 ppm
2017-12-0470370200012.50 ppm
2017-12-0470370220034.70 ppm
2017-12-0470370220016.30 ppm
2017-12-0470370250033.10 ppm
2017-12-0470370250023.10 ppm
2017-12-0570371280015.80 ppm
2017-12-0570371780032.80 ppm
2017-12-0570371830021.20 ppm
2017-12-0570371780013.80 ppm
2017-12-0570371780022.80 ppm
2017-12-0570371830011.20 ppm
2018-01-0270394330023.10 ppm
2018-01-0270394320011.80 ppm
2018-01-0270394280021.90 ppm
2018-01-0270394280012.10 ppm
2018-01-0270394330033.10 ppm
2018-01-0270394330015.10 ppm
2018-01-0370395420014.30 ppm
2018-01-0370395370022.40 ppm
2018-01-0370395370033.00 ppm
2018-01-0370395370013.60 ppm
2018-01-0370395490010.900 ppm
2018-01-0570396630011.60 ppm
2018-02-0170418590034.20 ppm
2018-02-0170418640032.50 ppm
2018-02-0170418550012.50 ppm
2018-02-0170418640022.70 ppm
2018-02-0170418640012.50 ppm
2018-02-0170418590024.10 ppm
2018-02-0170418590016.30 ppm
2018-02-0270419320013.70 ppm
2018-02-0270419290011.20 ppm
2018-02-0270419320022.70 ppm
2018-02-0270419320033.90 ppm
2018-02-0270419230015.20 ppm
2018-02-237043795002-PRI2.70 ppm
2018-02-237043795003-PRI3.50 ppm
2018-02-237043795001-PRI3.60 ppm
2018-03-0170441700022.80 ppm
2018-03-0170442270024.50 ppm
2018-03-0170441700012.70 ppm
2018-03-0170442300012.70 ppm
2018-03-0170442270016.30 ppm
2018-03-0170442270035.30 ppm
2018-03-0170441700032.90 ppm
2018-03-0270443600013.40 ppm
2018-03-0270443640011.20 ppm
2018-03-0270443680015.30 ppm
2018-03-0270443600033.90 ppm
2018-03-0270443600022.70 ppm
2018-04-0270468520012.60 ppm
2018-04-0270468510022.80 ppm
2018-04-0270468490024.10 ppm
2018-04-0270468490016.10 ppm
2018-04-0270468510012.40 ppm
2018-04-0270468490034.20 ppm
2018-04-0270468510032.80 ppm
2018-04-0370469650022.60 ppm
2018-04-0370469650033.90 ppm
2018-04-0370469650013.20 ppm
2018-04-0370469680011.20 ppm
2018-04-0370469610014.50 ppm
2018-05-0170500030023.80 ppm
2018-05-0170500030016.00 ppm
2018-05-0170500060011.80 ppm
2018-05-0170500060022.50 ppm
2018-05-0170500010012.50 ppm
2018-05-0170500030033.90 ppm
2018-05-0170500060032.60 ppm
2018-05-027050253002ND
2018-05-0270502490015.60 ppm
2018-05-0270502530011.20 ppm
2018-05-0270502490024.90 ppm
2018-05-077050706004-PRI2.60 ppm
2018-05-077050706005-PRI2.80 ppm
2018-05-077050706011-PRI2.60 ppm
2018-05-077050706010-PRI4.10 ppm
2018-05-077050706008-PRI7.00 ppm
2018-05-077050706003-PRI2.50 ppm
2018-05-077050706007-PRIND
2018-05-077050706001-PRI5.30 ppm
2018-05-077050706009-PRI4.30 ppm
2018-05-077050706002-PRI5.70 ppm
2018-05-077050706006-PRI1.20 ppm
2018-06-0470535530033.20 ppm
2018-06-0470535470024.20 ppm
2018-06-0470535530022.90 ppm
2018-06-0470535470017.30 ppm
2018-06-0470535470034.80 ppm
2018-06-0470535530012.60 ppm
2018-06-0470535540013.00 ppm
2018-06-0570536670020.990 ppm
2018-06-0570536650015.70 ppm
2018-06-0570536650025.70 ppm
2018-06-0570536670013.50 ppm
2018-07-0270568200014.40 ppm
2018-07-0270568250034.30 ppm
2018-07-0270568250014.60 ppm
2018-07-0270568210022.80 ppm
2018-07-0270568210012.60 ppm
2018-07-0270568250024.10 ppm
2018-07-0270568210032.80 ppm
2018-07-0370570490026.20 ppm
2018-07-0370570520011.10 ppm
2018-07-0370570490016.10 ppm
2018-07-0370570520021.20 ppm
2018-08-0670604820012.80 ppm
2018-08-0670604830012.60 ppm
2018-08-0670604830032.70 ppm
2018-08-0670604880034.80 ppm
2018-08-0670604880024.20 ppm
2018-08-0670604880015.00 ppm
2018-08-0670604830022.70 ppm
2018-08-0770607290011.000 ppm
2018-08-0770607340015.30 ppm
2018-08-0770607340025.10 ppm
2018-08-0770607290021.000 ppm
2018-09-0470635080012.70 ppm
2018-09-0470635070022.50 ppm
2018-09-0470635060024.00 ppm
2018-09-0470635070032.50 ppm
2018-09-0470635060015.00 ppm
2018-09-0470635060034.30 ppm
2018-09-0470635070012.40 ppm
2018-09-0570636960026.50 ppm
2018-09-0570636960041.20 ppm
2018-09-0570636960036.40 ppm
2018-09-0570636960051.30 ppm
2018-10-0170663390016.00 ppm
2018-10-0170663390035.30 ppm
2018-10-0170663380032.50 ppm
2018-10-0170663390024.60 ppm
2018-10-0170663520013.10 ppm
2018-10-0170663380022.00 ppm
2018-10-0170663380012.00 ppm
2018-10-0270664930036.50 ppm
2018-10-0270664930021.10 ppm
2018-10-0270664880012.40 ppm
2018-10-0270664930046.50 ppm
2018-10-0270664930011.10 ppm
2018-11-0170696670033.20 ppm
2018-11-0170696640033.90 ppm
2018-11-0170696670022.70 ppm
2018-11-0170696630012.70 ppm
2018-11-0170696640023.70 ppm
2018-11-0170696640015.60 ppm
2018-11-0170696670012.20 ppm
2018-11-0270698980021.10 ppm
2018-11-0270698980011.10 ppm
2018-11-0270698980045.70 ppm
2018-11-0270698980035.80 ppm
2018-11-0870704720012.20 ppm
2018-12-0370726110022.60 ppm
2018-12-0370726110053.90 ppm
2018-12-0370726110045.90 ppm
2018-12-0370726110011.10 ppm
2018-12-0370726110064.00 ppm
2018-12-0370726110032.40 ppm
2018-12-0370726110072.70 ppm
2018-12-0470727670011.20 ppm
2018-12-0470727580016.10 ppm
2018-12-0470727670021.20 ppm
2019-01-0270752260012.00 ppm
2019-01-0270752260032.50 ppm
2019-01-0270752260022.10 ppm
2019-01-0270752330024.50 ppm
2019-01-0270752330034.70 ppm
2019-01-0270752330016.50 ppm
2019-01-0270752240012.80 ppm
2019-01-0370754350015.80 ppm
2019-01-0370754390011.20 ppm
2019-01-0370754390021.20 ppm
2019-02-0470782420065.60 ppm
2019-02-0470782420032.80 ppm
2019-02-0470782420022.50 ppm
2019-02-0470782420011.60 ppm
2019-02-0470782420047.80 ppm
2019-02-0470782420055.50 ppm
2019-02-0470782420073.30 ppm
2019-02-0570783790011.20 ppm
2019-02-0570783790021.20 ppm
2019-03-0470811560014.10 ppm
2019-03-0470811530018.10 ppm
2019-03-0470811550012.20 ppm
2019-03-0470811530036.60 ppm
2019-03-0470811550033.20 ppm
2019-03-0470811550023.00 ppm
2019-03-0470811530025.80 ppm
2019-03-0570812450011.50 ppm
2019-03-0570812450036.80 ppm
2019-03-0570812450021.40 ppm
2019-04-0170839880011.70 ppm
2019-04-0170839860017.40 ppm
2019-04-0170839880022.60 ppm
2019-04-0170839860036.20 ppm
2019-04-0170839880032.80 ppm
2019-04-0170839890013.70 ppm
2019-04-0170839860026.30 ppm
2019-04-0270841240021.30 ppm
2019-04-0270841240036.60 ppm
2019-04-0270841240011.30 ppm
2019-04-1670859100012.60 ppm
2019-05-0170877490013.10 ppm
2019-05-0170877520016.60 ppm
2019-05-0170877540011.40 ppm
2019-05-0170877520035.00 ppm
2019-05-0170877540022.10 ppm
2019-05-0170877540032.40 ppm
2019-05-0170877520024.50 ppm
2019-05-0270879010021.10 ppm
2019-05-0270879000010.640 ppm
2019-05-0270879010011.10 ppm
2019-06-0370917470062.50 ppm
2019-06-0370917470041.50 ppm
2019-06-0370917470024.60 ppm
2019-06-0370917470016.60 ppm
2019-06-0370917470073.30 ppm
2019-06-0370917470035.30 ppm
2019-06-0370917470052.20 ppm
2019-06-0470919220036.30 ppm
2019-06-0470919220046.60 ppm
2019-06-0470919220012.60 ppm
2019-06-0470919220061.20 ppm
2019-06-0470919220021.20 ppm
2019-06-107092852003-PRI1.90 ppm
2019-06-107092852008-PRI7.10 ppm
2019-06-107092852010-PRI5.60 ppm
2019-06-107092852006-PRI1.30 ppm
2019-06-107092852001-PRI6.10 ppm
2019-06-107092852007-PRI1.30 ppm
2019-06-107092852009-PRI4.80 ppm
2019-06-107092852011-PRI3.50 ppm
2019-06-107092852002-PRI5.90 ppm
2019-06-107092852004-PRI2.50 ppm
2019-06-107092852013-PRI3.00 ppm
2019-06-107092852005-PRI2.40 ppm
2019-06-107092852012-PRI2.90 ppm
2019-06-1170931180012.70 ppm
2019-07-0270960690022.60 ppm
2019-07-0270960560024.90 ppm
2019-07-0270960690012.50 ppm
2019-07-0270960560015.80 ppm
2019-07-0270960690032.70 ppm
2019-07-0270960560035.60 ppm
2019-07-0270960600013.60 ppm
2019-07-0370963340015.80 ppm
2019-07-0370963340025.60 ppm
2019-07-0370963370021.10 ppm
2019-07-0370963370011.10 ppm
2019-08-0170996540022.70 ppm
2019-08-0170996490017.00 ppm
2019-08-0170996490025.00 ppm
2019-08-0170996540032.70 ppm
2019-08-0170996490035.60 ppm
2019-08-0170996540012.30 ppm
2019-08-0170996580013.80 ppm
2019-08-0270996950025.50 ppm
2019-08-0270997000011.10 ppm
2019-08-0270997000021.10 ppm
2019-08-0270996950015.50 ppm
2019-09-03701035210022.50 ppm
2019-09-03701035210065.40 ppm
2019-09-03701035210012.10 ppm
2019-09-03701035210032.60 ppm
2019-09-03701035210073.40 ppm
2019-09-03701035210046.90 ppm
2019-09-03701035210054.80 ppm
2019-09-04701036150021.20 ppm
2019-09-04701036150011.10 ppm
2019-09-04701036180016.30 ppm
2019-09-04701036180026.30 ppm
2019-10-01701067760022.70 ppm
2019-10-01701067760012.60 ppm
2019-10-01701067760032.70 ppm
2019-10-01701067760055.30 ppm
2019-10-01701067760046.00 ppm
2019-10-01701067760073.50 ppm
2019-10-01701067760065.40 ppm
2019-10-02701069900051.30 ppm
2019-10-02701069900036.60 ppm
2019-10-02701069900025.90 ppm
2019-10-02701069900041.30 ppm
2019-10-03701072050043.40 ppm
2019-10-03701072050013.30 ppm
2019-11-01701103970032.70 ppm
2019-11-01701103970012.90 ppm
2019-11-04701105170032.60 ppm
2019-11-04701105170011.60 ppm
2019-11-04701105170022.20 ppm
2019-11-04701105170043.20 ppm
2019-11-05701106650015.80 ppm
2019-11-05701106650025.90 ppm
2019-11-05701106620011.20 ppm
2019-11-05701106620021.10 ppm
2019-11-08701111490035.80 ppm
2019-11-08701111490025.10 ppm
2019-11-08701111490016.80 ppm
2019-12-02701135650043.50 ppm
2019-12-02701135650032.50 ppm
2019-12-02701135650022.50 ppm
2019-12-02701135680034.80 ppm
2019-12-02701135680017.20 ppm
2019-12-02701135680024.80 ppm
2019-12-02701135650011.70 ppm
2019-12-03701136550011.30 ppm
2019-12-03701137990032.50 ppm
2019-12-03701137990013.20 ppm
2019-12-03701136550021.20 ppm