Antimony

California Water Service (CWS) - Bakersfield

Antimony is a naturally occurring metal that enters tap water from plumbing fittings and also from industrial uses, such as production of metal alloys, batteries and plastics. Antimony causes organ damage and shortens lifespans in studies of laboratory animals.

MORE ABOUT THIS CONTAMINANT

214

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	0.156 ppb	54	38	ND - 0.426 ppb
2015	0.0735 ppb	40	13	ND - 0.552 ppb
2016	ND	38	0	ND
2017	ND	29	0	ND
2018	ND	29	0	ND
2019	ND	24	0	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppb

The EWG Health Guideline of 1 ppb for antimony 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 change to the stomach and intestines.

EPA Maximum Contaminant
Level (MCL) 6 ppb

The legal limit for antimony, established in 1992, was based on a toxicity study in laboratory animals published in 1970. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-01-06	5810-026-1415	ND
2014-01-14	5810-002-1008	ND
2014-02-04	5810-009-0931	ND
2014-03-04	5810-253-0810	ND
2014-05-05	5701-250-0958	0.422 ppb
2014-05-27	5701-250-0916	0.168 ppb
2014-06-02	5701-250-1048	0.276 ppb
2014-06-04	5701-131-0953	0.218 ppb
2014-06-05	5810-005-1016	ND
2014-06-09	5701-250-1017	0.177 ppb
2014-06-16	5701-250-0908	0.150 ppb
2014-06-18	5701-163-1105	0.280 ppb
2014-06-23	5701-250-1115	0.120 ppb
2014-06-25	5810-018-1018	ND
2014-06-25	5810-020-0934	ND
2014-06-30	5810-021-1025	ND
2014-06-30	5701-250-0916	0.128 ppb
2014-07-07	5806-011-1500	ND
2014-07-07	5701-055-1115	0.229 ppb
2014-07-07	5701-250-1050	0.231 ppb
2014-07-08	5701-005-1230	0.140 ppb
2014-07-08	5701-091-1430	0.192 ppb
2014-07-10	5806-031-1345	ND
2014-07-14	5701-250-0909	0.378 ppb
2014-07-15	5701-129-1100	0.268 ppb
2014-07-21	5701-250-1010	0.123 ppb
2014-07-28	5701-250-0952	0.111 ppb
2014-08-06	5806-024-1420	ND
2014-08-13	5806-015-1120	ND
2014-08-13	5701-250-1108	0.357 ppb
2014-08-18	5701-250-1042	0.277 ppb
2014-08-25	5701-250-1102	0.203 ppb
2014-09-02	5701-250-0553	0.426 ppb
2014-09-24	5701-143-1255	0.281 ppb
2014-09-29	5701-250-0922	0.170 ppb
2014-10-06	5701-006-1032	0.220 ppb
2014-10-06	5701-055-0914	0.261 ppb
2014-10-06	5701-250-0947	0.232 ppb
2014-10-07	5701-091-1000	0.254 ppb
2014-10-08	5701-050-0955	0.0800 ppb
2014-10-08	5806-050-1013	ND
2014-10-09	5806-004-1326	ND
2014-10-13	5701-250-0956	0.180 ppb
2014-10-20	5806-006-1125	ND
2014-10-20	5701-250-0858	0.138 ppb
2014-10-27	5701-250-0848	0.158 ppb
2014-11-03	5701-250-1202	0.277 ppb
2014-12-08	5701-143-1345	0.194 ppb
2014-12-08	5701-163-1420	0.247 ppb
2014-12-08	5701-250-0935	0.222 ppb
2014-12-09	5701-129-1425	0.238 ppb
2014-12-09	5701-131-1348	0.201 ppb
2014-12-15	5701-250-1031	0.212 ppb
2014-12-16	5810-003-2240	ND
2015-01-08	5701-072-1412	0.0720 ppb
2015-01-12	5701-055-1000	0.283 ppb
2015-01-12	5701-091-1015	0.284 ppb
2015-01-12	5701-250-1006	0.258 ppb
2015-01-20	5701-250-1420	0.116 ppb
2015-01-26	5701-250-1033	0.186 ppb
2015-02-09	5701-250-1040	0.254 ppb
2015-02-17	5701-250-0915	0.151 ppb
2015-03-02	5701-143-1526	0.150 ppb
2015-03-02	5701-250-1306	0.552 ppb
2015-03-04	5806-051-1130	ND
2015-03-04	5806-072-1215	ND
2015-03-19	5806-253-0735	ND
2015-04-06	5701-250-0914	0.145 ppb
2015-04-20	5806-053-1307	ND
2015-04-21	5806-038-1450	ND
2015-05-11	5806-096-1025	ND
2015-05-11	5806-105-1331	ND
2015-05-11	5806-156-0938	ND
2015-06-10	5701-143-1015	0.216 ppb
2015-06-16	5701-129-1258	0.273 ppb
2015-07-08	5806-059-1410	ND
2015-07-08	5806-068-1132	ND
2015-08-05	5806-099-1400	ND
2015-08-10	5806-098-1035	ND
2015-08-13	5806-160-0934	ND
2015-09-08	5701-250-0937	ND
2015-09-10	5806-092-1437	ND
2015-09-29	5701-091-1501	ND
2015-09-29	5701-129-1430	ND
2015-10-05	5806-079-1335	ND
2015-10-05	5806-091-1205	ND
2015-10-06	5806-058-1050	ND
2015-10-27	5806-056-1205	ND
2015-12-02	5701-129-1415	ND
2015-12-02	5701-131-1349	ND
2015-12-09	5806-106-1300	ND
2015-12-09	5806-163-1203	ND
2015-12-10	5806-094-1315	ND
2015-12-15	5806-108-1015	ND
2016-01-04	5806-106-0905	ND
2016-01-04	5806-107-0905	ND
2016-02-01	5701-250-1045	ND
2016-02-10	5806-122-1321	ND
2016-02-16	5701-250-0855	ND
2016-03-02	5701-143-2100	ND
2016-03-07	5701-250-1105	ND
2016-03-16	5806-253-1025	ND
2016-05-04	5806-124-1235	ND
2016-05-05	5806-118-1350	ND
2016-05-09	5701-250-1200	ND
2016-05-16	5701-250-1224	ND
2016-05-20	5806-110-1350	ND
2016-05-20	5806-126-1250	ND
2016-05-23	5701-250-1218	ND
2016-06-08	5806-148-1230	ND
2016-06-15	5806-131-1045	ND
2016-06-15	5701-131-1100	ND
2016-06-16	5806-055-1025	ND
2016-06-17	5806-151-1015	ND
2016-07-06	5701-250-0938	ND
2016-07-14	5806-109-1200	ND
2016-07-18	5701-055-1134	ND
2016-08-08	5806-149-1240	ND
2016-08-08	5806-154-0945	ND
2016-08-15	5806-125-1013	ND
2016-08-15	5701-250-1019	ND
2016-08-18	5806-069-1051	ND
2016-08-18	5806-150-1153	ND
2016-09-07	5806-119-1120	ND
2016-09-08	5806-052-1120	ND
2016-09-12	5806-143-1015	ND
2016-09-12	5806-146-1055	ND
2016-09-22	5806-117-0930	ND
2016-10-11	5701-129-1509	ND
2016-10-11	5701-129-1510	ND
2016-10-11	5806-129-1519	ND
2016-10-11	5701-250-1132	ND
2017-01-09	5701-250-0912	ND
2017-01-10	5806-002-1025	ND
2017-01-17	5701-250-0820	ND
2017-01-19	5806-026-0949	ND
2017-02-06	5701-250-0920	ND
2017-02-13	5701-250-0920	ND
2017-03-14	5806-253-0850	ND
2017-03-23	5806-021-0904	ND
2017-04-10	5806-009-1125	ND
2017-04-19	5806-004-1145	ND
2017-05-01	5701-250-0935	ND
2017-05-18	5701-250-0945	ND
2017-05-22	5701-250-1003	ND
2017-06-12	5806-050-1135	ND
2017-06-13	5701-005-1135	ND
2017-06-19	5806-018-0936	ND
2017-06-19	5701-250-1044	ND
2017-06-20	5806-005-1035	ND
2017-06-20	5806-015-1019	ND
2017-06-26	5806-006-0947	ND
2017-06-26	5701-250-1040	ND
2017-07-12	5806-003-0741	ND
2017-07-17	5701-250-0903	ND
2017-07-18	5806-031-1100	ND
2017-08-23	5806-024-1337	ND
2017-10-02	5701-250-0925	ND
2017-11-06	5806-011-1027	ND
2017-11-29	5701-250-1215	ND
2017-12-28	5806-020-1010	ND
2018-01-25	5701-267-1426	ND
2018-02-06	5701-250-1015	ND
2018-03-14	5806-051-1140	ND
2018-03-14	5806-072-1250	ND
2018-03-22	5806-253-0800	ND
2018-04-09	5701-250-0955	ND
2018-04-12	5701-267-1523	ND
2018-04-16	5806-156-1057	ND
2018-04-17	5806-053-1400	ND
2018-04-17	5806-105-0930	ND
2018-04-23	5806-094-1107	ND
2018-04-25	5806-096-0930	ND
2018-04-26	5806-038-1145	ND
2018-06-15	9590-026-0945	ND
2018-06-25	5701-091-0909	ND
2018-06-25	5701-250-1055	ND
2018-07-11	5806-068-1118	ND
2018-07-11	5806-092-1400	ND
2018-07-11	5806-106-1431	ND
2018-07-12	5806-056-1444	ND
2018-07-24	5806-059-1414	ND
2018-07-24	5806-091-0850	ND
2018-08-13	5806-099-0950	ND
2018-08-21	5806-098-0942	ND
2018-08-27	5806-160-1221	ND
2018-09-13	5806-058-0955	ND
2018-09-20	5806-069-1025	ND
2018-10-25	5806-058-1144	ND
2018-11-16	5806-048-1128	ND
2019-01-09	5806-107-1109	ND
2019-02-13	5806-122-1021	ND
2019-03-26	5806-253-1055	ND
2019-04-09	5701-091-0845	ND
2019-04-30	5701-267-0920	ND
2019-05-14	5806-125-0840	ND
2019-05-14	5806-126-0920	ND
2019-05-15	5806-118-1330	ND
2019-05-29	5806-110-1130	ND
2019-05-29	5806-124-0930	ND
2019-06-10	5806-148-1100	ND
2019-06-10	5806-151-1059	ND
2019-07-18	5806-109-0955	ND
2019-08-12	5806-117-1130	ND
2019-08-12	5806-149-1054	ND
2019-08-12	5806-154-1259	ND
2019-09-10	5806-146-0836	ND
2019-09-11	5806-143-0920	ND
2019-09-24	5806-055-1330	ND
2019-10-16	5806-052-1150	ND
2019-10-23	5701-018-0940	ND
2019-10-28	5806-150-1135	ND
2019-11-20	5806-108-0835	ND
2019-12-10	5806-119-0845	ND