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EWG's Tap Water Database — 2021 UPDATE

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Silver

Woburn Water Department (MWRA)

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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84

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0243 ppb141ND - 0.340 ppb
2015ND140ND
2016ND140ND
2017ND140ND
2018ND140ND
2019ND140ND

ppb = parts per billion

All test results

Date Result
2014-01-27ND
2014-01-27ND
2014-01-27ND
2014-01-27ND
2014-01-27ND
2014-01-27ND
2014-01-270.340 ppb
2014-08-18ND
2014-08-18ND
2014-08-18ND
2014-08-18ND
2014-08-18ND
2014-08-18ND
2014-08-18ND
2015-02-23ND
2015-02-23ND
2015-02-23ND
2015-02-23ND
2015-02-23ND
2015-02-23ND
2015-04-27ND
2015-08-17ND
2015-08-17ND
2015-08-17ND
2015-08-17ND
2015-08-17ND
2015-08-17ND
2015-08-17ND
2016-02-01ND
2016-02-01ND
2016-02-01ND
2016-02-01ND
2016-02-01ND
2016-02-01ND
2016-02-01ND
2016-08-29ND
2016-08-29ND
2016-08-29ND
2016-08-29ND
2016-08-29ND
2016-08-29ND
2016-08-29ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-02-06ND
2017-08-14ND
2017-08-14ND
2017-08-14ND
2017-08-14ND
2017-08-14ND
2017-08-14ND
2017-08-14ND
2018-01-29ND
2018-01-29ND
2018-01-29ND
2018-01-29ND
2018-01-29ND
2018-01-29ND
2018-01-29ND
2018-07-30ND
2018-07-30ND
2018-07-30ND
2018-07-30ND
2018-07-30ND
2018-07-30ND
2018-07-30ND
2019-02-04ND
2019-02-04ND
2019-02-04ND
2019-02-04ND
2019-02-04ND
2019-02-04ND
2019-02-04ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-09-16ND