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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Jericho Water District

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

 

147

Samples

0

Samples exceeding legal limit (MCL)

128

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.47 ppm3634ND - 7.57 ppm
20153.03 ppm2521ND - 5.58 ppm
20163.03 ppm3228ND - 6.27 ppm
20172.85 ppm23230.0900 ppm - 5.00 ppm
20182.90 ppm222.30 ppm - 3.50 ppm
20193.04 ppm2927ND - 5.80 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
2014-04-011404097-002-PRI0.290 ppm
2014-04-011404097-013-PRI3.89 ppm
2014-04-011404097-010-PRI4.20 ppm
2014-04-011404097-006-PRI0.290 ppm
2014-04-011404097-011-PRI3.06 ppm
2014-04-011404097-007-PRI4.74 ppm
2014-04-011404097-012-PRI2.82 ppm
2014-04-011404097-015-PRI4.41 ppm
2014-04-011404097-008-PRI3.34 ppm
2014-04-011404097-009-PRI1.10 ppm
2014-04-071404480-003-PRI2.44 ppm
2014-04-071404488-003-PRI2.12 ppm
2014-04-071404480-001-PRI5.38 ppm
2014-04-071404480-002-PRI2.68 ppm
2014-04-071404488-004-PRI3.92 ppm
2014-04-071404488-002-PRIND
2014-04-071404488-001-PRI2.26 ppm
2014-04-141404A40-002-PRI0.120 ppm
2014-04-171404D10-001-PRI3.72 ppm
2014-05-061405329-001-PRI3.05 ppm
2014-05-091405646-001-PRI3.04 ppm
2014-05-131405882-003-PRI3.36 ppm
2014-05-131405882-008-PRI1.35 ppm
2014-05-131405882-002-PRI7.57 ppm
2014-05-131405882-004-PRI3.84 ppm
2014-05-131405882-005-PRI2.93 ppm
2014-05-131405882-006-PRI3.48 ppm
2014-05-141405A02-002-PRI1.01 ppm
2014-05-221405G78-001-PRI3.44 ppm
2014-06-241406G97-001-PRI4.64 ppm
2014-07-021407133-001-PRI0.110 ppm
2014-07-021407133-002-PRI0.110 ppm
2014-07-031407286-001-PRI0.0800 ppm
2014-07-031407288-002-PRI0.0800 ppm
2014-11-071411507-002-PRI0.1000 ppm
2014-11-071411507-001-PRIND
2015-03-161503A63-003-PRI2.99 ppm
2015-03-161503A73-001-POCS4.76 ppm
2015-03-161503A73-003-POCS1.64 ppm
2015-03-161503A73-002-POCS4.06 ppm
2015-03-231503F87-001-PRI4.21 ppm
2015-03-231503F87-002-PRI2.55 ppm
2015-03-301503K54-001PRI4.02 ppm
2015-04-011504075-009-PRIND
2015-04-011504075-002-PRI4.58 ppm
2015-04-011504075-007-PRI1.98 ppm
2015-04-011504075-001-PRI1.74 ppm
2015-04-011504075-010-PRI1.71 ppm
2015-04-011504075-004-PRIND
2015-04-011504075-008-PRI2.35 ppm
2015-04-011504075-006-PRI3.92 ppm
2015-04-011504075-011-PRI3.51 ppm
2015-04-06504327-001-PRI4.81 ppm
2015-04-211504F72-001-PRI2.77 ppm
2015-04-271504K19-001-PRI5.12 ppm
2015-04-271504K19-002-PRI2.56 ppm
2015-04-271504K21-001-PRI5.36 ppm
2015-07-011507048-002-PRI5.58 ppm
2015-07-281507J92-002-PRI5.44 ppm
2015-10-231510I59-001-PRIND
2015-10-231510I59-002-PRIND
2016-01-111601589-003-PRI4.20 ppm
2016-01-111601589-001-PRI4.53 ppm
2016-01-111601589-002-PRI1.14 ppm
2016-01-191601C13-005-PRI2.50 ppm
2016-01-191601C13-001-PRI4.33 ppm
2016-01-191601C13-002-PRI2.96 ppm
2016-01-191601C13-003-PRI2.72 ppm
2016-01-191601C13-004-PRI3.83 ppm
2016-02-021602145-001-PRIND
2016-04-041604270-001-PRI4.05 ppm
2016-04-041604270-002-PRI2.40 ppm
2016-04-041604270-003-PRI5.15 ppm
2016-04-061604515-001-PRI4.33 ppm
2016-04-061604522-002-PRIND
2016-04-061604515-002-PRI3.36 ppm
2016-04-061604522-001-PRI3.08 ppm
2016-04-201604J06-004-PRI4.02 ppm
2016-04-201604J06-002-PRIND
2016-04-251604M73-003-PRI1.04 ppm
2016-04-251604M73-005-PRI3.37 ppm
2016-04-251604M73-006-PRI4.22 ppm
2016-04-251604M73-004-PRIND
2016-04-251604M73-002-PRI5.02 ppm
2016-05-061605621-001-PRI3.69 ppm
2016-05-091605733-001-PRI3.22 ppm
2016-05-091605733-004-PRI1.24 ppm
2016-05-091605729-001-PRI2.70 ppm
2016-05-231605K86-001-PRI2.53 ppm
2016-06-021606201-001-PRI3.45 ppm
2016-06-201606J66-001-PRI2.06 ppm
2016-07-061607317-002-PRI5.53 ppm
2016-07-261607M10-002-PRI6.27 ppm
2017-04-041604270-004-PRI2.51 ppm
2017-06-1270210750140.0900 ppm
2017-06-1270210750162.50 ppm
2017-06-2670223990020.880 ppm
2017-06-2670223990042.50 ppm
2017-06-2670224080050.320 ppm
2017-06-307022976001-PRI3.30 ppm
2017-07-0370230970092.70 ppm
2017-07-077023386001-PRI2.70 ppm
2017-07-1070236200232.50 ppm
2017-07-1070236200274.00 ppm
2017-07-1070236200213.00 ppm
2017-07-1770243450014.30 ppm
2017-07-1770243450024.80 ppm
2017-07-207024847002-PRI0.190 ppm
2017-07-2470250790072.90 ppm
2017-07-2470250790053.90 ppm
2017-07-317025719001-PRI3.50 ppm
2017-08-037026059002-PRI3.80 ppm
2017-08-147027141001-PRI3.50 ppm
2017-08-2170277990023.90 ppm
2017-08-2170277990042.80 ppm
2017-08-2170277990075.00 ppm
2018-05-297053027001-SEC2.30 ppm
2018-06-1170544850023.50 ppm
2019-04-097085085001-SEC4.00 ppm
2019-04-167086016001-SEC3.50 ppm
2019-04-2970875100022.40 ppm
2019-05-067088223001-SECND
2019-05-1370892380021.80 ppm
2019-05-177090009001-SEC3.70 ppm
2019-05-177090009002-SEC2.20 ppm
2019-05-227090518001-SECND
2019-05-237090617001-SEC5.80 ppm
2019-05-247090863001-SEC4.10 ppm
2019-05-2870910490022.50 ppm
2019-06-077092771002-SEC2.70 ppm
2019-06-077092771001-SEC5.60 ppm
2019-06-077092771003-SEC2.40 ppm
2019-06-1070928550022.50 ppm
2019-06-107092589001-PRI3.20 ppm
2019-06-107092854002-PRI3.60 ppm
2019-06-107092854001-PRI4.80 ppm
2019-06-177093930001-PRI3.90 ppm
2019-06-247094945001-SEC2.00 ppm
2019-06-2470949460014.10 ppm
2019-06-2470949460032.00 ppm
2019-07-027096085001-PRI3.10 ppm
2019-07-0870966080032.40 ppm
2019-07-0870966020033.80 ppm
2019-07-0870966080053.10 ppm
2019-07-177097822001-PRI2.90 ppm
2019-07-2970992150042.60 ppm
2019-07-2970992150023.40 ppm