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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Freeport

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

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74

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
20150.0483 ppb122ND - 0.320 ppb
2016ND140ND
2017ND110ND
2018ND110ND
2019ND100ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-241402B81-004-PRIND
2014-02-241402B81-003-PRIND
2014-02-241402B81-008-PRIND
2014-02-241402B81-007-PRIND
2014-02-241402B81-005-PRIND
2014-02-241402B81-002-PRIND
2014-02-241402B81-006-PRIND
2014-02-241402B81-001-PRIND
2014-08-191408D71-001-PRIND
2014-10-141410928-001-PRIND
2014-10-2235161486003AMND
2014-10-2235161486001AMND
2014-10-2235161486007AMND
2014-10-2235161486005AMND
2014-10-301410K14-001-PRIND
2014-12-181412D94-001-PRIND
2015-03-111503723-005-PRIND
2015-03-111503723-003-PRIND
2015-03-111503723-004-PRIND
2015-03-111503723-001-PRIND
2015-03-111503723-006-PRIND
2015-03-111503723-007-PRIND
2015-03-111503723-002-PRIND
2015-03-151503C65-002-PRIND
2015-04-2935186825001AM0.320 ppb
2015-04-2935186825005AM0.260 ppb
2015-07-2035198632003AMND
2015-07-2035198632001AMND
2016-03-021603153-005-PRIND
2016-03-021603153-001-PRIND
2016-03-021603153-002AND
2016-03-021603153-002-PRIND
2016-03-021603153-006-PRIND
2016-03-021603153-004-PRIND
2016-03-021603153-003ND
2016-03-171603E70-003A-PRIND
2016-03-171603E70-001-PRIND
2016-03-171603E70-002A-PRIND
2016-03-171603E70-003-PRIND
2016-05-111607I26-001AND
2016-09-221609J39-001-PRIND
2016-09-221609J39-001ND
2017-03-227013890008-PRIND
2017-03-227013890011-PRIND
2017-03-227013890007-PRIND
2017-03-227013890009-PRIND
2017-03-227013890001-PRIND
2017-03-227013890006-PRIND
2017-03-227013890002-PRIND
2017-03-227013890010-PRIND
2017-03-227013890005-PRIND
2017-03-227013890003-PRIND
2017-03-227013890004-PRIND
2018-03-067044635005-PRIND
2018-03-067044635009-PRIND
2018-03-067044635008-PRIND
2018-03-067044635001-PRIND
2018-03-067044635007-PRIND
2018-03-067044635006-PRIND
2018-03-067044635004-PRIND
2018-03-067044635003-PRIND
2018-03-067044635002-PRIND
2018-03-297046647001-PRIND
2018-05-117051431001-PRIND
2019-01-317078033001-PRIND
2019-01-317078033009-PRIND
2019-01-317078033007-PRIND
2019-01-317078033006-PRIND
2019-01-317078033008-PRIND
2019-01-317078033010-PRIND
2019-01-317078033004-PRIND
2019-01-317078033005-PRIND
2019-01-317078033003-PRIND
2019-01-317078033002-PRIND