Chromium (hexavalent)

California Water Service (CWS) - Salinas

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

MORE ABOUT THIS CONTAMINANT

138

Samples

Samples exceeding legal limit (MCL)

110

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	3.60 ppb	79	73	ND - 7.20 ppb
2015	1.94 ppb	8	4	ND - 5.10 ppb
2016	ND	4	0	ND
2017	3.54 ppb	34	27	ND - 7.20 ppb
2018	2.28 ppb	9	5	ND - 5.00 ppb
2019	0.475 ppb	4	1	ND - 1.90 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-04-02	201404030378AM	0.0400 ppb
2014-04-02	201404030343AM	5.60 ppb
2014-04-02	201404030281AM	2.60 ppb
2014-04-03	201404040301AM	6.70 ppb
2014-04-08	201404090683AM	3.40 ppb
2014-04-09	201404100790AM	3.20 ppb
2014-04-09	201404100821AM	6.90 ppb
2014-04-09	201404100649AM	3.30 ppb
2014-04-09	201404100607AM	6.30 ppb
2014-04-09	201404120173AM	3.90 ppb
2014-04-10	201404120133AM	4.60 ppb
2014-04-10	201404120071AM	6.30 ppb
2014-04-10	201404150242AM	3.80 ppb
2014-04-10	201404120092AM	2.30 ppb
2014-04-10	201404120085AM	4.40 ppb
2014-04-10	201404120144AM	5.80 ppb
2014-04-10	201404120151AM	5.20 ppb
2014-04-16	201404190039AM	0.0380 ppb
2014-04-16	201404190068AM	ND
2014-04-17	201404190080AM	5.00 ppb
2014-04-17	201404190050AM	0.320 ppb
2014-04-17	201404190059AM	6.00 ppb
2014-04-22	9590-129-1012	ND
2014-04-24	201404250185AM	0.0400 ppb
2014-04-29	201404300785AM	6.80 ppb
2014-05-29	201405300253AM	2.10 ppb
2014-07-22	9590-129-0951	ND
2014-08-13	9590-027-1214	3.30 ppb
2014-08-13	9590-028-1357	3.40 ppb
2014-08-13	9590-029-1005	4.00 ppb
2014-08-13	9590-030-1111	4.90 ppb
2014-08-27	9590-037-1250	3.00 ppb
2014-08-27	9590-039-1354	4.00 ppb
2014-08-27	9590-041-1325	5.30 ppb
2014-09-09	201409100981AM	0.0360 ppb
2014-09-09	201409100988AM	7.20 ppb
2014-09-09	201409100966AM	6.20 ppb
2014-09-10	201409110691AM	3.30 ppb
2014-09-10	201409110913AM	3.30 ppb
2014-09-10	201409110893AM	ND
2014-09-11	9590-005-1601	4.40 ppb
2014-09-11	9590-015-1405	1.60 ppb
2014-09-11	9590-017-1332	5.70 ppb
2014-09-11	9590-046-1434	3.80 ppb
2014-09-15	201409160396AM	6.70 ppb
2014-09-16	201409170672AM	4.40 ppb
2014-09-16	201409180647AM	ND
2014-09-16	201409170646AM	0.0320 ppb
2014-09-16	201409170782AM	3.20 ppb
2014-09-17	9590-018-1418	3.50 ppb
2014-09-17	9590-019-1822	3.30 ppb
2014-09-17	9590-020-1426	5.20 ppb
2014-09-17	9590-022-1200	5.40 ppb
2014-09-17	9590-023-1310	3.60 ppb
2014-09-17	9590-131-1616	4.30 ppb
2014-09-18	201409190390AM	5.40 ppb
2014-09-18	201409200134AM	3.10 ppb
2014-09-18	201409190378AM	4.40 ppb
2014-09-19	201409230178AM	5.50 ppb
2014-09-22	201409230163AM	0.140 ppb
2014-09-25	201409260421AM	5.00 ppb
2014-09-25	201409260401AM	3.60 ppb
2014-09-25	201409260430AM	3.80 ppb
2014-09-25	201409260412AM	0.130 ppb
2014-10-16	9590-024-1316	4.10 ppb
2014-10-16	9590-043-1430	ND
2014-10-16	9590-103-1146	6.70 ppb
2014-10-21	9590-102-1312	7.10 ppb
2014-10-21	9590-104-1445	1.40 ppb
2014-10-21	9590-123-1333	6.60 ppb
2014-11-05	9590-006-1032	2.80 ppb
2014-11-18	9590-022-1225	1.90 ppb
2014-11-18	9590-027-1301	2.30 ppb
2014-11-18	9590-028-1245	1.40 ppb
2014-12-16	9590-009-1035	3.10 ppb
2014-12-16	9590-026-1517	4.40 ppb
2014-12-16	9590-046-1139	3.80 ppb
2014-12-16	9590-106-1154	5.30 ppb
2014-12-16	9590-131-1007	4.50 ppb
2015-01-06	9590-129-1250	ND
2015-03-11	9590-131-1150	5.10 ppb
2015-03-18	9590-014-1505	4.60 ppb
2015-04-21	9590-008-1451	1.70 ppb
2015-04-27	9590-129-1216	ND
2015-07-22	9590-005-1525	4.10 ppb
2015-07-22	9590-129-1405	ND
2015-10-20	9590-129-1355	ND
2016-01-05	9590-129-1328	ND
2016-04-05	9590-129-1451	ND
2016-07-07	9590-129-1201	ND
2016-10-12	9590-129-1346	ND
2017-01-03	9590-129-1208	ND
2017-03-02	9590-132-1050	ND
2017-04-04	9590-129-1316	ND
2017-07-18	9590-129-1110	ND
2017-08-09	9590-015-1234	1.50 ppb
2017-08-09	9590-029-1337	4.10 ppb
2017-08-09	9590-030-1041	4.70 ppb
2017-08-09	9590-037-1010	3.40 ppb
2017-08-09	9590-041-0905	6.30 ppb
2017-08-29	9590-018-1126	3.60 ppb
2017-08-29	9590-019-0955	3.20 ppb
2017-08-29	9590-029-1050	3.90 ppb
2017-09-19	9590-009-1136	3.20 ppb
2017-09-19	9590-019-1150	3.20 ppb
2017-09-19	9590-020-1317	5.70 ppb
2017-09-19	9590-023-1335	4.30 ppb
2017-09-19	9590-026-1250	4.40 ppb
2017-09-20	9590-018-1000	3.70 ppb
2017-10-03	9590-043-1124	ND
2017-10-03	9590-102-1310	7.20 ppb
2017-10-03	9590-103-1408	6.60 ppb
2017-10-03	9590-104-1052	1.50 ppb
2017-10-03	9590-123-1157	6.80 ppb
2017-10-03	9590-129-1049	ND
2017-10-04	9590-022-1106	5.30 ppb
2017-10-04	9590-024-1140	5.20 ppb
2017-10-04	9590-027-0949	3.60 ppb
2017-10-04	9590-106-1040	5.80 ppb
2017-11-07	9590-006-1020	3.10 ppb
2017-11-28	9590-043-1423	ND
2017-11-28	9590-103-1100	6.60 ppb
2017-11-28	9590-104-1359	2.80 ppb
2017-11-28	9590-123-1335	6.80 ppb
2017-12-04	9590-046-1159	3.80 ppb
2018-01-16	9590-129-1330	ND
2018-03-05	9590-008-0938	4.70 ppb
2018-03-05	9590-014-1010	5.00 ppb
2018-03-05	9590-131-1115	4.00 ppb
2018-04-03	9590-129-1507	ND
2018-07-05	9590-005-1110	4.50 ppb
2018-07-05	9590-129-1205	ND
2018-07-23	9590-017-1353	2.30 ppb
2018-10-02	9590-129-1200	ND
2019-01-09	9590-129-1034	ND
2019-04-09	9590-129-1350	1.90 ppb
2019-07-31	9590-129-1241	ND
2019-10-23	9590-129-1019	ND