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EWG's Tap Water Database — 2021 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.

 

65

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
20150.0800 ppb81ND - 0.640 ppb
2016ND40ND
2017ND220ND
2018ND60ND
2019ND50ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-27201405280593-IND
2014-06-19201406200195ND
2014-06-19201406200121ND
2014-06-19201406200194ND
2014-06-19201406200196ND
2014-06-19201406200120ND
2014-06-19201406200119ND
2014-06-24201406250084ND
2014-06-24201406250083ND
2014-06-24201406250086ND
2014-06-24201406250087ND
2014-06-24201406250088ND
2014-06-24201406250085ND
2014-06-25201406260269ND
2014-06-25201406260270ND
2014-06-25201406260268ND
2014-06-25201406260267ND
2014-07-08201407090717ND
2014-07-30201407310263ND
2014-09-04201409050261ND
2015-06-29201506300124-IOCND
2015-06-29201506300177-IOCND
2015-06-30201507010220-IOCND
2015-07-14201507150299ND
2015-07-15201507160598ND
2015-07-15201507160441ND
2015-08-04201508050327ND
2015-08-102015081102630.640 ppb
2016-06-22201606230265ND
2016-06-22201606230270ND
2016-08-10201608110350ND
2016-08-10201608110453ND
2017-05-15201705160867ND
2017-05-15201705160632ND
2017-05-15201705160571ND
2017-05-16201705170304ND
2017-05-16201705170782ND
2017-05-16201705170491ND
2017-05-23201705240962ND
2017-05-25201705260591ND
2017-06-20201706210537ND
2017-06-20201706210725ND
2017-07-05201707060865ND
2017-07-20201707210331ND
2017-07-20201707210328ND
2017-07-25201707260765ND
2017-07-25201707260764ND
2017-07-25201707260654ND
2017-07-26201707260490ND
2017-07-27201707280313ND
2017-08-01201708020922ND
2017-08-01201708020897ND
2017-08-01201708021436ND
2017-08-28201708290217ND
2018-04-2518041332-01ND
2018-05-15201805160828ND
2018-05-15201805161020ND
2018-05-24201805250730ND
2018-05-30201805310461ND
2018-07-23201807240376ND
2019-06-24201906250202AND
2019-08-21201908220455ND
2019-08-22201908230324ND
2019-09-24201909250291ND
2019-09-25201909260166ND