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EWG's Tap Water Database — 2021 UPDATE

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Silver

Johnson County SUD

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND110ND
2017ND20ND
2018N/A00N/A
2019ND100ND

ppb = parts per billion

All test results

Date Lab ID Result
2016-03-17Q1611268021ND
2016-03-17Q1611268020ND
2016-03-17Q1611268019ND
2016-03-17Q1611268018ND
2016-03-17Q1611268017ND
2016-06-01Q1621680008ND
2016-06-01Q1621680007ND
2016-11-21Q1650944019ND
2016-11-21Q1650944004ND
2016-11-21Q1650944018ND
2016-11-21Q1650944003ND
2017-02-14Q1706687011ND
2017-05-04Q1718433001ND
2019-02-20Q1907529012ND
2019-02-20Q1907529031ND
2019-02-20Q1907529011ND
2019-02-20Q1907529030ND
2019-02-20Q1907529010ND
2019-02-20Q1907529009ND
2019-02-20Q1907529029ND
2019-05-21Q1927429008ND
2019-05-21Q1927429010ND
2019-05-21Q1927429009ND