Chromium (total)

Green Taylor Water District

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.104 ppb	18	5	ND - 0.527 ppb
2015	ND	6	0	ND
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	N/A	0	0	N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-07-02	4062835-03A	0.412 ppb
2014-07-02	4062835-11A	ND
2014-07-02	4062835-01A	ND
2014-07-02	4062835-09A	ND
2014-07-02	4062835-07A	ND
2014-07-02	4062835-05A	ND
2014-09-17	4091620-01A	ND
2014-09-17	4091620-05A	0.511 ppb
2014-09-17	4091620-03A	0.225 ppb
2014-09-17	4091620-09A	ND
2014-09-17	4091620-07A	0.202 ppb
2014-09-17	4091620-11A	ND
2014-10-14	4100765-09A	ND
2014-10-14	4100765-03A	0.527 ppb
2014-10-15	4100765-11A	ND
2014-10-15	4100765-05A	ND
2014-10-15	4100765-01A	ND
2014-10-15	4100765-07A	ND
2015-01-14	5010182-09A	ND
2015-01-14	5010182-01A	ND
2015-01-14	5010182-07A	ND
2015-01-14	5010182-11A	ND
2015-01-14	5010182-05A	ND
2015-01-14	5010182-03A	ND