Silver

Sands Point

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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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	5	ND
2015	N/A	0	N/A
2016	ND	7	ND
2017	ND	9	ND
2018	ND	8	ND
2019	ND	6	ND

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-11-18	1411C18-004-SEC	ND
2014-11-18	1411C18-003-SEC	ND
2014-11-18	1411C18-002-SEC	ND
2014-11-18	1411C18-005-SEC	ND
2014-11-18	1411C18-001-SEC	ND
2016-09-15	1609D36-001-SEC	ND
2016-11-16	704726005-SEC	ND
2016-12-01	705820002-SEC	ND
2016-12-01	705820001-SEC	ND
2016-12-01	705820005-SEC	ND
2016-12-01	7-5820004-SEC	ND
2016-12-01	705820003	ND
2017-03-21	7013839001-SEC	ND
2017-05-11	7018457003-SEC	ND
2017-05-18	7019036001-SEC	ND
2017-11-14	7035726002-SEC	ND
2017-11-14	7035726006-SEC	ND
2017-11-14	7035726004-SEC	ND
2017-11-14	7035726005-SEC	ND
2017-11-14	7035726001-SEC	ND
2017-11-14	7035726003-SEC	ND
2018-10-16	7068145004-SEC	ND
2018-10-16	7068145006-SEC	ND
2018-10-16	7068145005-SEC	ND
2018-10-16	7068145003-SEC	ND
2018-10-16	7068145002-SEC	ND
2018-10-16	7068145001-SEC	ND
2018-11-06	7070185004-SEC	ND
2018-11-06	7070185002-SEC	ND
2019-10-15	70108488006-SEC	ND
2019-10-15	70108488005	ND
2019-10-15	70108488003-SEC	ND
2019-10-15	70108488004-SEC	ND
2019-10-15	70108488002-SEC	ND
2019-10-15	70108488001-SEC	ND