Chromium (total)

Las Vegas Valley 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.

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149

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	0.0630 ppb	10	2	ND - 0.430 ppb
2014	0.0655 ppb	73	7	ND - 1.10 ppb
2015	N/A	0	0	N/A
2016	ND	1	0	ND
2017	0.0887 ppb	62	1	ND - 5.50 ppb
2018	N/A	0	0	N/A
2019	ND	3	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
2013-03-06	201303080526AM	0.200 ppb
2013-03-06	201303080524AM	0.430 ppb
2013-06-05	201306070101AM	ND
2013-06-05	201306070103AM	ND
2013-09-16	201309190437AM	ND
2013-09-16	201309190439AM	ND
2013-12-18	201312200208AM	ND
2013-12-18	201312200210AM	ND
2013-12-18	201312200212AM	ND
2013-12-18	201312200206AM	ND
2014-03-11	14030130-001	ND
2014-03-18	201403200555AM	ND
2014-03-18	201403200557AM	ND
2014-04-23	201404250235AM	ND
2014-04-23	201404250233AM	0.800 ppb
2014-04-23	201404250231AM	0.760 ppb
2014-05-12	14050125-001	ND
2014-05-12	14050125-002	ND
2014-05-12	14050125-004	ND
2014-05-12	14050129-002	ND
2014-05-12	14050129-001	ND
2014-05-12	14050129-005	ND
2014-05-12	14050129-003	ND
2014-05-12	14050129-004	ND
2014-05-13	14050166-001	ND
2014-05-13	14050166-002	ND
2014-05-13	14050166-011	ND
2014-05-13	14050181-003	ND
2014-05-13	14050181-002	ND
2014-05-13	14050181-011	ND
2014-05-13	14050181-001	ND
2014-05-13	14050181-012	ND
2014-05-14	14050257-001	ND
2014-05-14	14050257-011	ND
2014-05-14	14050257-012	ND
2014-06-03	14050494-001	ND
2014-06-03	14050494-003	ND
2014-06-03	14050494-002	ND
2014-06-03	14050513-001	ND
2014-06-03	14050513-002	ND
2014-06-03	14050513-003	ND
2014-06-04	14060076-001	ND
2014-06-04	14060081-001	ND
2014-06-04	14060081-002	ND
2014-06-04	14060081-003	ND
2014-06-04	14060076-003	ND
2014-06-04	14060076-002	ND
2014-06-09	14060160-001	ND
2014-06-09	14060160-002	ND
2014-06-09	14060160-003	ND
2014-06-10	14060170-002	ND
2014-06-10	14060170-001	ND
2014-06-10	14060165-002	ND
2014-06-10	14060170-003	ND
2014-06-10	14060165-003	ND
2014-06-10	14060165-001	ND
2014-06-11	14060242-003	ND
2014-06-11	14060242-002	ND
2014-06-11	14060242-001	ND
2014-06-11	14060230-003	ND
2014-06-11	14060230-002	ND
2014-06-11	14060230-001	ND
2014-06-16	14060276-002	ND
2014-06-16	14060276-001	ND
2014-06-16	14060276-003	ND
2014-06-16	14060271-003	ND
2014-06-16	14060271-002	ND
2014-06-16	14060271-001	ND
2014-06-17	14060388-002	ND
2014-06-17	14060388-001	ND
2014-06-17	14060393-003	ND
2014-06-17	14060393-001	ND
2014-06-17	14060393-002	ND
2014-06-17	14060388-003	ND
2014-06-18	14060398-002	ND
2014-06-18	14060398-001	ND
2014-06-25	14060526-001	ND
2014-09-23	14090415-001	ND
2014-09-29	201410010262AM	0.330 ppb
2014-09-29	201410010215AM	0.300 ppb
2014-10-22	201410240233AM	0.390 ppb
2014-10-22	201410240231AM	1.10 ppb
2014-10-22	201410240229AM	1.10 ppb
2016-05-09	S1601630005	ND
2017-05-01	S1702783001	ND
2017-05-08	S1703312001	ND
2017-05-08	S1703196002	ND
2017-05-08	S1703196004	ND
2017-05-08	S1703196003	5.50 ppb
2017-05-08	S1703195002	ND
2017-05-08	S1703195004	ND
2017-05-08	S1703195003	ND
2017-05-08	S1703195005	ND
2017-05-08	S1703195001	ND
2017-05-09	S1703308001	ND
2017-05-09	S1703308003	ND
2017-05-09	S1703308002	ND
2017-05-09	S1703183004	ND
2017-05-09	S1703183003	ND
2017-05-09	S1703308004	ND
2017-05-09	S1703183001	ND
2017-05-09	S1703183002	ND
2017-05-10	S1703184005	ND
2017-05-10	S1703184003	ND
2017-05-15	S1703185003	ND
2017-05-15	S1703185001	ND
2017-05-15	S1703185002	ND
2017-06-05	S1703270003	ND
2017-06-05	S1703270001	ND
2017-06-05	S1703270002	ND
2017-06-05	S1703431002	ND
2017-06-05	S1703431001	ND
2017-06-05	S1703431003	ND
2017-06-05	S1703586001	ND
2017-06-05	S1703586003	ND
2017-06-05	S1703586002	ND
2017-06-06	S1703808001	ND
2017-06-06	S1703808002	ND
2017-06-06	S1703808003	ND
2017-06-06	S1703735001	ND
2017-06-06	S1703735003	ND
2017-06-06	S1703735002	ND
2017-06-07	S1703809001	ND
2017-06-07	S1704004001	ND
2017-06-07	S1704004002	ND
2017-06-07	S1704003001	ND
2017-06-12	S1703811001	ND
2017-06-12	S1703813002	ND
2017-06-12	S1703811002	ND
2017-06-12	S1703812001	ND
2017-06-12	S1703810002	ND
2017-06-12	S1703810003	ND
2017-06-12	S1703813001	ND
2017-06-12	S1703810001	ND
2017-06-12	S1703812002	ND
2017-06-14	S1703814003	ND
2017-06-14	S1703814001	ND
2017-06-14	S1703814002	ND
2017-06-14	S1703815002	ND
2017-06-14	S1703815004	ND
2017-06-14	S1703815003	ND
2017-06-27	S1703816001	ND
2017-07-19	S1704278001	ND
2017-07-24	S1704294001	ND
2017-08-22	S1705156001	ND
2017-08-29	S1705295001	ND
2019-04-30	S1907076001	ND
2019-07-02	S1916252001	ND
2019-08-20	S1923827001	ND