Chromium (total)

Jurupa Community Services 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

157

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	2.56 ppb	41	41	0.440 ppb - 4.60 ppb
2015	3.14 ppb	24	24	1.60 ppb - 6.10 ppb
2016	2.99 ppb	24	24	1.50 ppb - 5.10 ppb
2017	3.71 ppb	24	24	1.60 ppb - 6.20 ppb
2018	3.60 ppb	23	22	ND - 5.80 ppb
2019	ND	21	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
2014-03-20	B4C2024-09	0.560 ppb
2014-03-20	B4C2024-05	2.10 ppb
2014-03-20	B4C2030-01	2.40 ppb
2014-03-20	B4C2024-07	0.930 ppb
2014-03-20	B4C2024-03	3.40 ppb
2014-03-20	B4C2024-01	3.40 ppb
2014-03-20	B4C2024-13	3.20 ppb
2014-04-24	B4D2584-01	1.50 ppb
2014-05-06	B4E0520-01	1.10 ppb
2014-08-06	4790-023-1205	3.60 ppb
2014-08-06	4790-025-1120	4.20 ppb
2014-08-12	4790-029-1025	2.20 ppb
2014-08-12	4790-032-1215	4.00 ppb
2014-08-12	4790-033-1305	4.60 ppb
2014-08-12	4790-040-1245	2.20 ppb
2014-08-12	4790-046-1350	2.30 ppb
2014-08-13	4790-018-1220	1.80 ppb
2014-08-13	4790-020-1145	4.60 ppb
2014-08-13	4790-021-1125	3.40 ppb
2014-08-13	4790-022-1250	2.10 ppb
2014-08-13	4790-043-1050	4.10 ppb
2014-08-19	4790-016-0905	1.90 ppb
2014-08-19	4790-017-0935	2.60 ppb
2014-08-19	4790-019-0940	2.70 ppb
2014-08-19	4790-024-1130	4.60 ppb
2014-08-19	4790-026-1105	4.20 ppb
2014-08-19	4790-029-1000	1.000 ppb
2014-08-19	4790-031-1120	1.10 ppb
2014-08-19	4790-046-1200	2.30 ppb
2014-08-20	4790-003-1010	3.20 ppb
2014-08-20	4790-034-0845	3.00 ppb
2014-08-20	4790-055-0915	1.80 ppb
2014-09-09	B4I0893-11	0.440 ppb
2014-09-09	B4I0893-15	0.900 ppb
2014-09-09	B4I0893-17	2.20 ppb
2014-09-09	B4I0893-13	2.00 ppb
2014-09-09	B4I0893-03	4.50 ppb
2014-09-09	B4I0893-01	2.40 ppb
2014-09-09	B4I0893-07	3.50 ppb
2014-09-09	B4I0893-09	1.20 ppb
2014-09-09	B4I0893-05	1.90 ppb
2015-06-25	4790-056-1030	4.40 ppb
2015-08-13	4790-018-1035	2.00 ppb
2015-08-13	4790-022-1023	2.60 ppb
2015-08-13	4790-023-1115	3.40 ppb
2015-08-13	4790-025-1240	3.40 ppb
2015-08-13	4790-029-1205	1.60 ppb
2015-08-13	4790-033-1120	4.70 ppb
2015-08-13	4790-043-1105	4.50 ppb
2015-08-18	4790-024-1410	5.10 ppb
2015-08-18	4790-032-1110	5.10 ppb
2015-08-18	4790-040-1225	2.20 ppb
2015-08-19	4790-046-1045	2.40 ppb
2015-08-19	4790-058-1130	1.60 ppb
2015-08-25	4790-029-1115	1.70 ppb
2015-08-25	4790-046-1110	2.10 ppb
2015-08-26	4790-019-0900	3.00 ppb
2015-08-26	4790-034-1220	3.30 ppb
2015-08-26	4790-055-1205	2.10 ppb
2015-09-09	4790-016-1015	2.40 ppb
2015-09-09	4790-017-0950	2.50 ppb
2015-09-09	4790-021-1225	3.40 ppb
2015-10-01	4790-020-1130	6.10 ppb
2015-10-21	4790-003-1020	3.30 ppb
2015-10-22	4790-057-1220	2.50 ppb
2016-08-02	4790-020-1125	4.60 ppb
2016-08-02	4790-033-1215	4.20 ppb
2016-08-05	4790-029-1120	1.70 ppb
2016-08-05	4790-032-1315	5.00 ppb
2016-08-05	4790-040-1215	2.80 ppb
2016-08-05	4790-046-1245	2.40 ppb
2016-08-05	4790-056-0945	5.10 ppb
2016-08-05	4790-057-0915	3.40 ppb
2016-08-09	4790-018-1025	2.20 ppb
2016-08-09	4790-023-1130	3.00 ppb
2016-08-09	4790-043-1100	4.60 ppb
2016-08-09	4790-058-1050	1.50 ppb
2016-08-10	4790-046-1335	2.20 ppb
2016-08-11	4790-029-1320	1.60 ppb
2016-08-16	4790-025-1035	2.90 ppb
2016-08-16	4790-034-1000	3.10 ppb
2016-08-16	4790-055-1055	2.00 ppb
2016-08-17	4790-016-1200	2.20 ppb
2016-08-17	4790-017-0955	2.60 ppb
2016-08-17	4790-019-1050	2.80 ppb
2016-08-17	4790-024-0930	4.70 ppb
2016-08-23	4790-022-1045	1.70 ppb
2016-08-24	4790-003-1025	2.50 ppb
2016-08-24	4790-021-1150	3.00 ppb
2017-08-01	4790-029-0920	1.80 ppb
2017-08-02	4790-019-0905	3.00 ppb
2017-08-02	4790-020-0830	4.70 ppb
2017-08-02	4790-021-1100	4.20 ppb
2017-08-02	4790-023-1000	3.70 ppb
2017-08-02	4790-024-1015	5.20 ppb
2017-08-02	4790-034-1145	4.40 ppb
2017-08-02	4790-043-0830	5.70 ppb
2017-08-02	4790-046-0850	2.70 ppb
2017-08-03	4790-029-1135	2.00 ppb
2017-08-03	4790-032-1040	4.80 ppb
2017-08-03	4790-040-1110	4.80 ppb
2017-08-03	4790-056-0930	6.20 ppb
2017-08-03	4790-058-1000	2.30 ppb
2017-08-08	4790-003-0950	3.90 ppb
2017-08-08	4790-025-1025	4.10 ppb
2017-08-08	4790-033-1130	4.80 ppb
2017-08-09	4790-016-1148	2.70 ppb
2017-08-09	4790-017-1040	2.80 ppb
2017-08-09	4790-018-0920	2.80 ppb
2017-08-09	4790-022-1000	2.90 ppb
2017-08-09	4790-046-0955	1.60 ppb
2017-08-17	4790-026-1200	4.90 ppb
2017-10-31	4790-057-0920	3.00 ppb
2018-07-11	4790-017-1035	2.70 ppb
2018-07-11	4790-022-1035	ND
2018-07-12	4790-016-1050	2.50 ppb
2018-07-12	4790-018-0945	3.20 ppb
2018-07-17	4790-023-1030	3.80 ppb
2018-07-17	4790-033-0900	5.00 ppb
2018-07-19	4790-003-0835	4.10 ppb
2018-07-19	4790-026-1045	5.80 ppb
2018-08-01	4790-019-0825	3.00 ppb
2018-08-01	4790-020-0925	3.10 ppb
2018-08-01	4790-021-0815	3.50 ppb
2018-08-01	4790-043-1015	5.20 ppb
2018-08-02	4790-024-0940	5.10 ppb
2018-08-02	4790-034-0830	3.60 ppb
2018-08-07	4790-032-0900	4.50 ppb
2018-08-07	4790-040-1000	3.20 ppb
2018-08-13	4790-029-1000	1.90 ppb
2018-08-22	4790-046-1000	2.70 ppb
2018-08-28	4790-025-0925	4.50 ppb
2018-08-29	4790-057-1000	3.80 ppb
2018-08-30	4790-056-0845	5.80 ppb
2018-09-05	4790-029-1120	3.00 ppb
2018-09-05	4790-046-1035	2.90 ppb
2019-07-10	4790-029-1115	ND
2019-07-11	4790-046-0900	ND
2019-07-23	4790-029-1345	ND
2019-07-23	4790-046-1200	ND
2019-08-15	4790-018-1230	ND
2019-08-15	4790-020-0905	ND
2019-08-15	4790-023-1005	ND
2019-08-15	4790-025-1155	ND
2019-08-15	4790-033-1105	ND
2019-08-20	4790-056-1130	ND
2019-08-21	4790-003-0920	ND
2019-08-21	4790-019-1000	ND
2019-08-21	4790-043-1040	ND
2019-08-22	4790-016-1020	ND
2019-08-22	4790-017-1150	ND
2019-08-22	4790-022-1235	ND
2019-08-27	4790-057-1150	ND
2019-08-28	4790-024-1045	ND
2019-08-28	4790-032-1010	ND
2019-08-28	4790-034-1220	ND
2019-08-28	4790-040-1055	ND