Know Your Environment. Protect Your Health.

Chromium (total)

Middletown Water Department

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND40ND
2023ND40ND

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
2018-03-01IOCR 200489002ND
2018-03-01IOC1 200489001ND
2018-04-16IOC1 200492152ND
2018-04-16IOCR 200492151ND
2019-05-13IOC1 200531892ND
2019-05-13IOCR 200531894ND
2019-05-21IOC1 200533082ND
2019-05-21IOCR 200533084ND
2020-05-06IOC1 200574724ND
2020-05-06IOCR 200574725ND
2020-05-14IOC1 200575834ND
2020-05-14IOCR 200575835ND
2021-03-30IOC1 200611335ND
2021-03-30IOCR 200611337ND
2021-03-30IOC1 200611336ND
2021-04-07IOCR 200612106ND
2022-05-11E300182524 300182533ND
2022-05-11E300182526 300182546ND
2022-05-11I300182528 300182552ND
2022-05-11I300182529 300182557ND
2023-06-23E300370712 300370715ND
2023-06-23E300370718 300370721ND
2023-06-23I300370724 300370727ND
2023-06-23I300370731 300370734ND