Know Your Environment. Protect Your Health.

Chromium (total)

Old Westbury

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND50ND
2020ND60ND
2021ND60ND
2022ND60ND
2023ND60ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-11-137070939001-PRIND
2018-11-147071093001-PRIND
2018-12-057072928001-PRIND
2018-12-127073711001-PRIND
2018-12-177074138001-PRIND
2019-08-2870103044002-PRIND
2019-08-2870103044001-PRIND
2019-09-0570103873001-PRIND
2019-09-0570103873002-PRIND
2019-09-1770105242001-PRIND
2020-09-0870144945001-PRIND
2020-09-0970145143001-PRIND
2020-09-1470145712001-PRIND
2020-09-1670146108001-PRIND
2020-09-2170146589001-PRIND
2020-09-2370146960001-PRIND
2021-11-1070194292002-PRIND
2021-11-1070194292001-PRIND
2021-11-1670194898002-PRIND
2021-11-1670194898001-PRIND
2021-12-0870197161001-PRIND
2021-12-2270198898001-PRIND
2022-10-2670234596001-PRIND
2022-11-0270235277001-PRIND
2022-11-1470236636001-PRIND
2022-11-1670237103001-PRIND
2022-11-3070238258001-PRIND
2022-12-2170240933001-PRIND
2023-11-0170276064002-PRIND
2023-11-0170276064001-PRIND
2023-11-0870276911002-PRIND
2023-11-0870276911001-PRIND
2023-11-2970279039001-PRIND
2023-11-2970279039002-PRIND