Silver

California American Water Company - Antelope

Silver occurs naturally in surface and groundwater and can be added to water as a biocide that inhibits growth of bacteria and algae. Increasingly, the use of antimicrobial nano-sized silver particles in consumer products contributes to silver in water sources used for drinking water.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2013	N/A	0	N/A
2014	N/A	0	N/A
2015	ND	16	ND
2016	ND	1	ND
2017	N/A	0	N/A
2018	ND	16	ND
2019	ND	1	ND

ppb = parts per billion

All test results

Date	Lab ID	Result
2015-08-05	1225-003-1110	ND
2015-08-05	1225-005-1222	ND
2015-08-05	1225-006-0945	ND
2015-08-10	1225-014-1125	ND
2015-08-10	1225-013-1021	ND
2015-08-10	1225-011-0855	ND
2015-08-11	1225-001-0915	ND
2015-08-11	1225-002-1236	ND
2015-08-11	1225-004-1255	ND
2015-08-11	1225-018-1145	ND
2015-08-11	1225-007-0907	ND
2015-08-11	1225-009-1020	ND
2015-08-12	1225-016-1050	ND
2015-08-13	1225-012-1100	ND
2015-08-13	1225-017-0909	ND
2015-08-20	1225-008-1150	ND
2016-05-05	1225-010-1358	ND
2018-08-07	1233-009-0900	ND
2018-08-07	1233-010-1310	ND
2018-08-07	1233-011-1120	ND
2018-08-07	1233-012-1030	ND
2018-08-07	1233-018-1210	ND
2018-08-08	1233-017-1010	ND
2018-08-08	1233-002-0920	ND
2018-08-08	1233-016-1340	ND
2018-08-09	1233-008-1020	ND
2018-08-09	1233-007-1130	ND
2018-08-14	1233-040-1040	ND
2018-08-14	1233-014-1045	ND
2018-08-14	1233-013-1220	ND
2018-08-14	1233-006-1000	ND
2018-08-14	1233-004-0830	ND
2018-08-14	1233-003-1130	ND
2019-05-16	1225-001-1320	ND