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EWG's Tap Water Database — 2021 UPDATE

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Silver

City of Crowley

NOTE: City of Crowley purchases water from City of Fort Worth which is required to test for silver. Sample information shown below was taken by City of Fort Worth.

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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29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND50ND
2016ND50ND
2017ND20ND
2018ND50ND
2019ND50ND

ppb = parts per billion

All test results

NOTE: City of Crowley purchases water from City of Fort Worth which is required to test for silver. Sample information shown below was taken by City of Fort Worth.

Date Lab ID Result
2014-01-15Q1401044008ND
2014-01-15Q1401044007ND
2014-01-15Q1401044006ND
2014-04-23Q1412967005ND
2015-01-28Q1503441006ND
2015-01-28Q1503441005ND
2015-05-06Q1516781004ND
2015-05-06Q1516781003ND
2015-07-22Q1528384020ND
2016-02-17Q1607005030ND
2016-02-17Q1607005029ND
2016-02-17Q1607005028ND
2016-04-20Q1615700002ND
2016-06-13Q1623857002ND
2017-02-22Q1707727027ND
2017-02-22Q1707727026ND
2017-04-26Q1717031006ND
2017-04-26Q1717031005ND
2017-08-02Q1732335006ND
2018-01-24Q1802705010ND
2018-01-24Q1802705009ND
2018-01-24Q1802705008ND
2018-03-20Q1811001007ND
2018-03-20Q1811001005ND
2019-01-23Q1903345013ND
2019-04-24Q1916570022ND
2019-05-22Q1927658004ND
2019-05-22Q1927658011ND
2019-06-17Q1936867003ND