Know Your Environment. Protect Your Health.

Chromium (hexavalent)

Ventura County Waterworks District No. 19 - Somis

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

 

13

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20150.143 ppb138ND - 0.582 ppb
2016N/A00N/A
2017N/A00N/A
2018ND80ND
2019ND80ND
2020ND80ND
2021ND70ND
2022ND70ND
2023ND60ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2015-02-10112166PND
2015-02-10112167PND
2015-02-10312250P0.0480 ppb
2015-02-10312251P0.0730 ppb
2015-02-10112164P0.180 ppb
2015-05-11313288P0.0890 ppb
2015-05-11113210Q0.540 ppb
2015-08-11114765PND
2015-08-11114766PND
2015-08-11114767PND
2015-08-11314851P0.147 ppb
2015-08-11314852P0.204 ppb
2015-08-11114764P0.582 ppb