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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Locust Valley Water District

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.

MORE ABOUT THIS CONTAMINANT

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.785 ppb1711ND - 1.89 ppb
2015N/A00N/A
2016ND50ND
2017ND60ND
2018ND60ND
2019ND60ND

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
2014-03-17105943P0.400 ppb
2014-03-17105944P0.747 ppb
2014-03-17105940P1.25 ppb
2014-03-17305861P1.33 ppb
2014-03-17105942P1.37 ppb
2014-03-17105941P1.48 ppb
2014-08-251408H39-001-PRIND
2014-08-261408I37-002-PRIND
2014-08-261408I37-001-PRIND
2014-09-171409D32-001-PRIND
2014-09-22109091PND
2014-09-231409I18-002-PRIND
2014-11-18309828R1.49 ppb
2014-11-18109826R1.56 ppb
2014-11-18109824R1.29 ppb
2014-11-18109827R0.552 ppb
2014-11-18109825R1.89 ppb
2016-08-151608E20-001-PRIND
2016-08-171608G37-001-PRIND
2016-08-231608L71-001-PRIND
2016-09-071609396-002-PRIND
2016-09-141609B25-001-POCND
2017-02-017010274003ND
2017-08-227027930001-PRIND
2017-08-287028361001-PRIND
2017-08-307028531001-PRIND
2017-09-057028851001-PRIND
2017-09-117029447001-PRIND
2018-01-087039782001-PRIND
2018-08-077060621001-PRIND
2018-08-137061326001-PRIND
2018-08-217062227001-PRIND
2018-08-277062839004-PRIND
2018-09-10706417701-PRIND
2019-08-217062227001-PRIND
2019-08-2770102885001-PRIND
2019-09-0370103457002ND
2019-09-0370103457001-PRIND
2019-09-0970104153002-PRIND
2019-09-0970104153001-PRIND