Chromium (total)

City of Angleton

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
2013	0.0219 ppb	12	1	ND - 0.263 ppb
2014	0.132 ppb	12	6	ND - 0.293 ppb
2015	N/A	0	0	N/A
2016	ND	2	0	ND
2017	ND	3	0	ND
2018	N/A	0	0	N/A
2019	ND	2	0	ND

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
2013-08-27	Q1306185011	ND
2013-08-27	Q1306185007	ND
2013-08-27	Q1306185009	ND
2013-08-27	Q1306185001	ND
2013-08-27	Q1306185003	ND
2013-08-27	Q1306185005	ND
2013-11-20	Q1314129007	ND
2013-11-20	Q1314129003	ND
2013-11-20	Q1314129009	0.263 ppb
2013-11-20	Q1314129001	ND
2013-11-20	Q1314129005	ND
2013-11-20	Q1314129011	ND
2014-02-25	Q1405933007	0.257 ppb
2014-02-25	Q1405933011	0.216 ppb
2014-02-25	Q1405933009	0.274 ppb
2014-02-25	Q1405933001	0.282 ppb
2014-02-25	Q1405933005	0.293 ppb
2014-02-25	Q1405933003	0.263 ppb
2014-05-19	Q1416779011	ND
2014-05-19	Q1416779009	ND
2014-05-19	Q1416779007	ND
2014-05-19	Q1416779005	ND
2014-05-19	Q1416779001	ND
2014-05-19	Q1416779003	ND
2016-01-20	AD18847	ND
2016-01-20	AD18846	ND
2017-03-28	AD77078	ND
2017-05-23	AD85159	ND
2017-05-23	AD85160	ND
2019-01-28	AE51542	ND
2019-05-02	AE64555	ND