Know Your Environment. Protect Your Health.

Chromium (total)

New Iberia Water System (lAWCO)

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
2018ND140ND
20199.60 ppb229.60 ppb
2020N/A00N/A
20214.63 ppb75ND - 7.00 ppb
2022ND10ND
2023N/A00N/A

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
2018-06-26AE22011ND
2018-06-26AE22008ND
2018-06-26AE22008ND
2018-06-26AE22011ND
2018-10-02B1804758-001ND
2018-10-02B1804758-005ND
2018-10-02B1804758-004ND
2018-10-02B1804758-003ND
2018-10-02B1804758-002ND
2018-10-02B1804758-001ND
2018-10-02B1804758-005ND
2018-10-02B1804758-004ND
2018-10-02B1804758-003ND
2018-10-02B1804758-002ND
2019-01-28B1900362-0019.60 ppb
2019-01-28B1900362-0019.60 ppb
2021-05-03B2102116-001ND
2021-07-20B2103287-0016.50 ppb
2021-07-20B2103287-0026.60 ppb
2021-07-20B2103287-0035.50 ppb
2021-07-20B2103287-0046.80 ppb
2021-07-20B2103287-0057.00 ppb
2021-10-19B2105504-001ND
2022-02-15B2200644-001ND