Silver

Truckee Meadows Water Authority

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.

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111

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	ND	14	ND
2015	ND	9	ND
2016	ND	19	ND
2017	ND	25	ND
2018	ND	21	ND
2019	ND	23	ND

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-04-22	0414-13-I	ND
2014-04-22	0414-12-IS	ND
2014-04-22	0414-16-IS	ND
2014-04-23	0414-17-IS	ND
2014-06-09	0614-06-IS	ND
2014-06-09	0614-07-I	ND
2014-06-17	0614-11-IS	ND
2014-06-17	0614-10-I	ND
2014-06-17	0614-09-I	ND
2014-06-17	0614-12-IS	ND
2014-06-17	0614-13-IS	ND
2014-06-17	0614-14-IS	ND
2014-06-24	0614-28-IS	ND
2014-06-24	0614-26-IS	ND
2015-06-08	1506017-01	ND
2015-06-08	1506018-01	ND
2015-06-11	1506027-01	ND
2015-06-17	1506035-01	ND
2015-06-17	1506036-01	ND
2015-06-17	1506037-01	ND
2015-06-17	1506038-01	ND
2015-06-23	1506055-01	ND
2015-06-23	1506061-01	ND
2016-05-31	1605028-01	ND
2016-05-31	1605025-01	ND
2016-05-31	1605026-01	ND
2016-05-31	1605027-01	ND
2016-06-01	1606001-01	ND
2016-06-06	1606010-01	ND
2016-07-19	1607023-01	ND
2016-07-19	1607024-01	ND
2016-07-19	1607025-01	ND
2016-08-04	1608010-01	ND
2016-08-04	1608011-01	ND
2016-08-15	1608022-01	ND
2016-08-15	1608023-01	ND
2016-08-24	1608035-01	ND
2016-08-24	1608034-01	ND
2016-08-24	1608033-01	ND
2016-08-24	1608037-01	ND
2016-08-25	1608036-01	ND
2016-08-25	1608039-01	ND
2017-02-07	1702004-01	ND
2017-03-08	1703009-01	ND
2017-03-08	1703008-01	ND
2017-05-02	1705003-01	ND
2017-05-02	1705004-01	ND
2017-05-02	1705005-01	ND
2017-05-15	1705023-01	ND
2017-05-15	1705025-01	ND
2017-05-15	1705024-01	ND
2017-05-25	1705041-01	ND
2017-07-11	1707003-01WET	ND
2017-07-11	1707002-01WET	ND
2017-07-11	1707005-01WET	ND
2017-07-11	1707004-01WET	ND
2017-07-18	1707020-01WET	ND
2017-07-18	1707021-01WET	ND
2017-07-18	1707022-01WET	ND
2017-07-18	1707024-01WET	ND
2017-08-16	1708013-01	ND
2017-08-16	1708014-01	ND
2017-08-29	1708026-01	ND
2017-08-29	1708027-01	ND
2017-08-29	1708029-01	ND
2017-08-29	1708030-01	ND
2017-08-29	1708025-01	ND
2018-01-23	1801009-01	ND
2018-02-01	1802001-01WET	ND
2018-02-06	1802006-01WET	ND
2018-03-01	1802003-02	ND
2018-04-04	1804005-01	ND
2018-04-09	1804011-01	ND
2018-04-09	1804012-01	ND
2018-04-11	1804017-01	ND
2018-04-11	1804018-01	ND
2018-04-11	1804019-01	ND
2018-04-24	1804027-01	ND
2018-04-25	1804025-01	ND
2018-04-26	1804044-01	ND
2018-05-21	1805043-01	ND
2018-05-23	1805041-01	ND
2018-07-24	1807025-01	ND
2018-11-14	1811008-02	ND
2018-11-14	1811009-02	ND
2018-11-14	1811010-02	ND
2018-11-14	1811011-02	ND
2018-11-14	1811012-02	ND
2019-01-09	1901012-02	ND
2019-01-09	1901013-02	ND
2019-01-16	1901011-02	ND
2019-01-16	1901017-02	ND
2019-01-22	1901010-02	ND
2019-02-05	1902001-01	ND
2019-02-26	1902019-01	ND
2019-05-07	1905007-01	ND
2019-05-07	1905008-01	ND
2019-05-29	1905027-01	ND
2019-06-19	1906012-01	ND
2019-06-19	1906013-01	ND
2019-06-19	1906014-01	ND
2019-06-19	1906015-01	ND
2019-06-19	1906016-01	ND
2019-07-09	1907014-02	ND
2019-07-09	1907018-01	ND
2019-07-25	1907045-01	ND
2019-07-29	1907046-01	ND
2019-07-30	1907048-01	ND
2019-08-06	1908002-01	ND
2019-08-06	1908004-01	ND
2019-08-06	1908007-01	ND