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EWG's Tap Water Database — 2021 UPDATE

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Silver

Acton Water Supply District

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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95

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND100ND
2015ND180ND
2016ND140ND
2017ND130ND
20180.250 ppb244ND - 2.00 ppb
2019ND160ND

ppb = parts per billion

All test results

Date Result
2014-04-10ND
2014-05-06ND
2014-05-06ND
2014-05-19ND
2014-05-19ND
2014-05-19ND
2014-05-19ND
2014-05-19ND
2014-06-02ND
2014-06-02ND
2015-03-03ND
2015-05-27ND
2015-05-27ND
2015-05-27ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-26ND
2015-06-26ND
2015-06-26ND
2015-06-26ND
2015-06-26ND
2015-08-03ND
2015-08-17ND
2015-11-02ND
2016-01-06ND
2016-05-02ND
2016-05-02ND
2016-05-02ND
2016-05-18ND
2016-05-18ND
2016-05-18ND
2016-06-06ND
2016-06-06ND
2016-06-28ND
2016-07-14ND
2016-07-29ND
2016-09-07ND
2016-10-07ND
2017-02-01ND
2017-03-22ND
2017-03-31ND
2017-03-31ND
2017-05-03ND
2017-05-03ND
2017-06-27ND
2017-06-27ND
2017-07-27ND
2017-07-27ND
2017-08-09ND
2017-08-09ND
2017-12-11ND
2018-01-24ND
2018-03-14ND
2018-03-23ND
2018-03-231.000 ppb
2018-03-23ND
2018-04-26ND
2018-06-111.000 ppb
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-212.00 ppb
2018-06-21ND
2018-06-21ND
2018-06-22ND
2018-06-22ND
2018-06-222.00 ppb
2018-07-26ND
2018-09-19ND
2018-09-19ND
2018-09-19ND
2018-12-03ND
2018-12-10ND
2019-01-29ND
2019-01-31ND
2019-03-12ND
2019-05-14ND
2019-05-14ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-05-29ND
2019-07-24ND
2019-07-25ND
2019-07-25ND
2019-07-31ND
2019-09-16ND
2019-12-11ND
2019-12-16ND