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EWG's Tap Water Database — 2019 UPDATE

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Silver

Carson City Public Works

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.

 

70

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND100ND
2013ND60ND
2014ND200ND
20150.0800 ppb81ND - 0.640 ppb
2016ND40ND
2017ND220ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-06-21201206220321-IND
2012-06-25201206270244-IND
2012-06-25201206270216-IND
2012-07-11201207130064-IND
2012-08-01201208020264-IND
2012-08-08201208100396-IND
2012-09-18201209200453-IND
2012-10-02201210030297-IND
2012-10-22201210230058-IND
2012-11-13201211150453-IND
2013-06-18201306190582-IND
2013-06-26201306270194-IND
2013-07-18201307200001-IND
2013-07-23201307240725ND
2013-09-09201309100461-IND
2013-09-25201309260254-IND
2014-05-27201405280593-IND
2014-06-19201406200119ND
2014-06-19201406200120ND
2014-06-19201406200196ND
2014-06-19201406200195ND
2014-06-19201406200121ND
2014-06-19201406200194ND
2014-06-24201406250085ND
2014-06-24201406250084ND
2014-06-24201406250088ND
2014-06-24201406250087ND
2014-06-24201406250086ND
2014-06-24201406250083ND
2014-06-25201406260269ND
2014-06-25201406260267ND
2014-06-25201406260268ND
2014-06-25201406260270ND
2014-07-08201407090717ND
2014-07-30201407310263ND
2014-09-04201409050261ND
2015-06-29201506300124-IOCND
2015-06-29201506300177-IOCND
2015-06-30201507010220-IOCND
2015-07-14201507150299ND
2015-07-15201507160441ND
2015-07-15201507160598ND
2015-08-04201508050327ND
2015-08-102015081102630.640 ppb
2016-06-22201606230265ND
2016-06-22201606230270ND
2016-08-10201608110453ND
2016-08-10201608110350ND
2017-05-15201705160867ND
2017-05-15201705160571ND
2017-05-15201705160632ND
2017-05-16201705170782ND
2017-05-16201705170304ND
2017-05-16201705170491ND
2017-05-23201705240962ND
2017-05-25201705260591ND
2017-06-20201706210537ND
2017-06-20201706210725ND
2017-07-05201707060865ND
2017-07-20201707210331ND
2017-07-20201707210328ND
2017-07-25201707260764ND
2017-07-25201707260654ND
2017-07-25201707260765ND
2017-07-26201707260490ND
2017-07-27201707280313ND
2017-08-01201708020922ND
2017-08-01201708020897ND
2017-08-01201708021436ND
2017-08-28201708290217ND