Know Your Environment. Protect Your Health.

Chromium (total)

Belmont Waterworks Inc.

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
20206.67 ppb31ND - 20.0 ppb
20212.65 ppb21ND - 5.30 ppb
2022ND20ND
20232.26 ppb52ND - 6.20 ppb

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
2020-03-02B2001159-001ND
2020-03-02B2001159-00220.0 ppb
2020-03-02B2001159-003ND
2021-07-14B2103192-0015.30 ppb
2021-10-05B2105321-001ND
2022-02-01B2200515-001ND
2022-05-11B2202359-001ND
2023-04-10B2301575-001ND
2023-04-10B2301575-0025.10 ppb
2023-04-10B2301575-003ND
2023-05-09B2301963-0016.20 ppb
2023-05-09B2301963-002ND