Know Your Environment. Protect Your Health.

Chromium (hexavalent)

San Joaquin County-mokelumne Acres

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).

 

10

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
20200.920 ppb53ND - 2.20 ppb
2021N/A00N/A
2022N/A00N/A
20230.800 ppb52ND - 2.10 ppb

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
2020-09-09CA3910017_009_009-2020090911451.20 ppb
2020-09-09CA3910017_003_003-2020090912002.20 ppb
2020-09-09CA3910017_006_006-202009091410ND
2020-09-09CA3910017_007_007-2020090912201.20 ppb
2020-09-24CA3910017_008_008-202009241220ND
2023-09-13CA3910017_003_003-2023091311052.10 ppb
2023-09-13CA3910017_007_007-202309131125ND
2023-09-13CA3910017_009_009-2023091310351.90 ppb
2023-09-13CA3910017_006_006-202309131000ND
2023-09-13CA3910017_008_008-202309131010ND