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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Freeport

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

 

63

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND80ND
2016ND110ND
2017ND110ND
2018ND110ND
2019ND100ND

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
2014-02-241402B81-004-PRIND
2014-02-241402B81-003-PRIND
2014-02-241402B81-008-PRIND
2014-02-241402B81-001-PRIND
2014-02-241402B81-007-PRIND
2014-02-241402B81-005-PRIND
2014-02-241402B81-002-PRIND
2014-02-241402B81-006-PRIND
2014-08-191408D71-001-PRIND
2014-10-141410928-001-PRIND
2014-10-301410K14-001-PRIND
2014-12-181412D94-001-PRIND
2015-03-111503723-003-PRIND
2015-03-111503723-007-PRIND
2015-03-111503723-002-PRIND
2015-03-111503723-006-PRIND
2015-03-111503723-001-PRIND
2015-03-111503723-004-PRIND
2015-03-111503723-005-PRIND
2015-03-151503C65-002-PRIND
2016-03-021603153-006-PRIND
2016-03-021603153-003ND
2016-03-021603153-004-PRIND
2016-03-021603153-002-SECND
2016-03-021603153-005-PRIND
2016-03-171603E70-003-SECND
2016-03-171603E70-003-POCSND
2016-03-171603E70-001-PRIND
2016-05-111607I26-001AND
2016-09-221609J39-001-PRIND
2016-09-221609J39-001ND
2017-03-227013890005-PRIND
2017-03-227013890003-PRIND
2017-03-227013890008-PRIND
2017-03-227013890004-PRIND
2017-03-227013890001-PRIND
2017-03-227013890007-PRIND
2017-03-227013890011-PRIND
2017-03-227013890009-PRIND
2017-03-227013890010-PRIND
2017-03-227013890002-PRIND
2017-03-227013890006-PRIND
2018-03-067044635008-SECND
2018-03-067044635006-SECND
2018-03-067044635009-SECND
2018-03-067044635002-SECND
2018-03-067044635004-SECND
2018-03-067044635003-SECND
2018-03-067044635007-SECND
2018-03-067044635005-SECND
2018-03-067044635001-SECND
2018-03-297046647001-SECND
2018-05-117051431001-PRIND
2019-01-317078033006-SECND
2019-01-317078033009-SECND
2019-01-317078033005-SECND
2019-01-317078033010-SECND
2019-01-317078033007-SECND
2019-01-317078033002-SECND
2019-01-317078033004-SECND
2019-01-317078033008-SECND
2019-01-317078033001-SECND
2019-01-317078033003-SECND