Chromium (total)

El Paso Water Utilities

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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146

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	2.76 ppb	68	54	ND - 9.60 ppb
2014	2.76 ppb	13	13	0.570 ppb - 5.50 ppb
2015	0.498 ppb	14	7	ND - 1.50 ppb
2016	2.82 ppb	10	10	0.750 ppb - 6.60 ppb
2017	1.72 ppb	19	11	ND - 6.70 ppb
2018	0.0833 ppb	12	1	ND - 1.000 ppb
2019	2.25 ppb	10	6	ND - 6.00 ppb

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
2013-05-06	1305195-001A	3.20 ppb
2013-05-06	1305196-001A	ND
2013-05-06	1305191-001A	4.60 ppb
2013-05-06	1305192-001A	9.60 ppb
2013-05-06	1305194-001A	4.00 ppb
2013-05-06	1305193-001A	8.00 ppb
2013-05-06	1305198-001A	4.80 ppb
2013-05-06	1305199-001A	0.790 ppb
2013-05-06	1305201-001A	0.220 ppb
2013-05-06	1305200-001A	8.70 ppb
2013-05-06	1305197-001A	3.80 ppb
2013-05-07	1305231-001D	ND
2013-05-07	1305230-001D	ND
2013-05-07	1305228-001D	1.40 ppb
2013-05-07	1305229-001D	ND
2013-05-07	1305232-001D	ND
2013-05-08	1305299-001D	5.40 ppb
2013-05-08	1305294-001D	ND
2013-05-08	1305298-001D	9.30 ppb
2013-05-08	1305297-001D	1.40 ppb
2013-05-08	1305295-001D	3.30 ppb
2013-05-09	1305296-001D	4.60 ppb
2013-05-14	1305448-001D	3.90 ppb
2013-05-14	1305449-001D	2.10 ppb
2013-05-15	1305491-001D	2.80 ppb
2013-05-15	1305492-001D	3.30 ppb
2013-05-15	1305490-001D	ND
2013-05-15	1305493-001D	3.00 ppb
2013-05-15	1305489-001D	0.300 ppb
2013-05-21	1305665-001D	1.30 ppb
2013-07-30	1308027-001A	4.20 ppb
2013-07-30	1308025-001A	2.40 ppb
2013-07-30	1308024-001A	3.10 ppb
2013-08-28	1308995-001C	4.60 ppb
2013-08-28	1308996-001C	3.30 ppb
2013-11-11	1311347-001A	4.00 ppb
2013-11-11	1311346-001A	4.80 ppb
2013-11-11	1311356-001A	4.70 ppb
2013-11-11	1311350-001A	3.00 ppb
2013-11-11	1311345-001A	3.80 ppb
2013-11-11	1311355-001A	3.10 ppb
2013-11-11	1311352-001A	4.00 ppb
2013-11-11	1311353-001A	1.60 ppb
2013-11-11	1311351-001A	0.350 ppb
2013-11-11	1311354-001A	3.30 ppb
2013-11-11	1311349-001A	1.50 ppb
2013-11-11	1311348-001A	3.40 ppb
2013-11-11	1311342-001C	4.30 ppb
2013-11-11	1311341-001C	4.80 ppb
2013-11-12	1311391-001D	ND
2013-11-12	1311393-001D	3.20 ppb
2013-11-12	1311394-001D	ND
2013-11-12	1311396-001D	1.50 ppb
2013-11-12	1311392-001D	ND
2013-11-12	1311397-001D	ND
2013-11-12	1311395-001D	ND
2013-11-13	1311490-001D	4.20 ppb
2013-11-13	1311492-001D	1.40 ppb
2013-11-13	1311491-001D	1.90 ppb
2013-11-19	1311633-001D	4.90 ppb
2013-11-19	1311634-001D	4.60 ppb
2013-11-20	1311721-001D	ND
2013-11-20	1311725-001D	2.90 ppb
2013-11-20	1311723-001D	1.70 ppb
2013-11-20	1311724-001D	ND
2013-11-20	1311727-001D	3.00 ppb
2013-11-20	1311726-001D	3.40 ppb
2013-11-21	1311722-001D	0.850 ppb
2014-02-17	1402608-001C	4.10 ppb
2014-02-17	1402609-001C	5.50 ppb
2014-04-24	Q1413114005	1.70 ppb
2014-04-28	Q1413580009	4.30 ppb
2014-04-28	Q1413580010	4.80 ppb
2014-04-28	Q1413580011	4.70 ppb
2014-06-30	Q1424630008	0.750 ppb
2014-06-30	Q1424630009	0.760 ppb
2014-06-30	Q1424630010	0.570 ppb
2014-10-20	Q1453050001	0.880 ppb
2014-10-20	Q1453050015	1.70 ppb
2014-11-13	Q1455930006	0.970 ppb
2014-12-09	Q1459148001	5.10 ppb
2015-02-23	Q1507037007	0.930 ppb
2015-03-31	Q1511708007	ND
2015-03-31	Q1511708008	ND
2015-03-31	Q1511708009	0.590 ppb
2015-03-31	Q1511708010	0.910 ppb
2015-03-31	Q1511708011	ND
2015-04-01	Q1511987003	ND
2015-04-01	Q1511987004	ND
2015-04-01	Q1511987005	1.10 ppb
2015-06-02	Q1520193004	ND
2015-06-29	Q1524410010	ND
2015-06-29	Q1524410011	1.30 ppb
2015-06-29	Q1524410012	1.50 ppb
2015-11-09	Q1544169006	0.640 ppb
2016-02-29	Q1608128020	6.60 ppb
2016-02-29	Q1608128021	5.10 ppb
2016-02-29	Q1608128022	4.50 ppb
2016-02-29	Q1608128023	1.60 ppb
2016-05-04	Q1617572006	1.10 ppb
2016-05-04	Q1617572007	0.750 ppb
2016-05-04	Q1617572008	1.10 ppb
2016-11-16	Q1649856002	2.00 ppb
2016-11-16	Q1649856028	2.60 ppb
2016-11-16	Q1649856003	2.80 ppb
2017-03-01	Q1708907011	5.30 ppb
2017-03-01	Q1708907012	5.50 ppb
2017-03-01	Q1708907013	6.70 ppb
2017-03-01	Q1708907014	ND
2017-03-07	Q1709845008	2.20 ppb
2017-03-07	Q1709845009	2.30 ppb
2017-03-07	Q1709845010	1.70 ppb
2017-03-07	Q1709845011	2.20 ppb
2017-05-02	Q1718064004	1.30 ppb
2017-05-04	Q1718587002	ND
2017-05-04	Q1718587016	ND
2017-05-04	Q1718587003	ND
2017-08-28	Q1738511001	ND
2017-11-16	Q1758977011	ND
2017-11-16	Q1758977012	1.40 ppb
2017-11-29	Q1761133008	2.60 ppb
2017-11-30	Q1761453013	ND
2017-11-30	Q1761453025	1.40 ppb
2017-11-30	Q1761453002	ND
2018-06-06	Q1822783002	1.000 ppb
2018-06-07	Q1822783021	ND
2018-07-10	Q1826925017	ND
2018-11-13	Q1845910008	ND
2018-11-13	Q1845910013	ND
2018-11-13	Q1845910018	ND
2018-11-14	Q1845910028	ND
2018-11-14	Q1845910038	ND
2018-11-14	Q1845910023	ND
2018-11-14	Q1845910046	ND
2018-11-14	Q1845910033	ND
2018-11-15	Q1846719010	ND
2019-02-27	Q1908637014	6.00 ppb
2019-02-27	Q1908637015	3.80 ppb
2019-02-27	Q1908637016	5.40 ppb
2019-02-28	Q1908637034	2.50 ppb
2019-04-23	Q1916065004	ND
2019-05-23	Q1928420008	1.90 ppb
2019-06-26	Q1940399012	ND
2019-06-26	Q1940399013	ND
2019-08-05	Q1950660004	2.90 ppb
2019-11-14	Q1976997009	ND