Know Your Environment. Protect Your Health.

Chromium (hexavalent)

San Antonio Water Company

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).

 

20

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
20180.325 ppb82ND - 1.40 ppb
20191.20 ppb111.20 ppb
2020ND10ND
20210.250 ppb102ND - 1.30 ppb
2022N/A00N/A
2023N/A00N/A

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
2018-10-26CA3610085_011_011-2018102609301.20 ppb
2018-10-26CA3610085_013_013-201810260839ND
2018-10-26CA3610085_016_016-201810261124ND
2018-10-26CA3610085_004_004-2018102609401.40 ppb
2018-10-26CA3610085_018_018-201810261024ND
2018-10-26CA3610085_002_002-201810261028ND
2018-10-26CA3610085_017_017-201810260855ND
2018-10-26CA3610085_003_003-201810261000ND
2019-01-04CA3610085_011_011-2019010409531.20 ppb
2020-04-07CA3610085_021_021-202004071020ND
2021-07-20CA3610085_011_011-2021072008421.30 ppb
2021-07-20CA3610085_003_003-202107201013ND
2021-07-20CA3610085_017_017-202107200943ND
2021-07-20CA3610085_018_018-202107201130ND
2021-07-20CA3610085_002_002-202107201124ND
2021-07-20CA3610085_013_013-202107200954ND
2021-07-20CA3610085_001_001-202107201036ND
2021-07-27CA3610085_021_021-202107271245ND
2021-07-27CA3610085_004_004-2021072709081.20 ppb
2021-07-27CA3610085_016_016-202107270810ND