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EWG's Tap Water Database — 2021 UPDATE

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Silver

Western MWD (Arlington)

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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71

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND100ND
2015ND140ND
2016ND120ND
2017ND130ND
2018ND100ND
2019ND120ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-034790-009-0930ND
2014-02-034790-007-1115ND
2014-02-064790-001-1120ND
2014-02-064790-002-1145ND
2014-02-064790-005-1300ND
2014-02-064790-004-1240ND
2014-02-064790-003-1210ND
2014-05-054790-009-1345ND
2014-05-054790-007-1100ND
2014-08-054790-007-1400ND
2015-02-094790-009-1130ND
2015-02-094790-007-0930ND
2015-02-114790-004-1500ND
2015-02-114790-003-1440ND
2015-02-114790-005-1520ND
2015-02-114790-002-1415ND
2015-02-184790-009-1400ND
2015-02-244790-001-1045ND
2015-05-044790-007-1350ND
2015-05-054790-009-0905ND
2015-08-034790-009-1345ND
2015-08-044790-007-1310ND
2015-11-024790-007-1250ND
2015-11-024790-009-1130ND
2016-02-124790-009-1030ND
2016-02-134790-001-0930ND
2016-02-134790-003-0950ND
2016-02-134790-004-1010ND
2016-02-134790-005-1030ND
2016-03-294790-002-0705ND
2016-05-024790-009-1015ND
2016-05-024790-007-1120ND
2016-08-014790-009-1030ND
2016-08-014790-007-0930ND
2016-11-014790-009-1120ND
2016-11-014790-007-0900ND
2017-02-064790-009-1030ND
2017-02-074790-001-1330ND
2017-02-074790-002-1230ND
2017-02-074790-003-1245ND
2017-02-074790-004-1300ND
2017-02-074790-005-1315ND
2017-04-034790-009-1231ND
2017-05-014790-007-1252ND
2017-05-014790-009-1240ND
2017-08-014790-007-1005ND
2017-08-014790-009-1217ND
2017-11-064790-009-1100ND
2017-11-074790-007-0845ND
2018-02-214790-007-1100ND
2018-02-214790-009-0900ND
2018-02-264790-001-1340ND
2018-02-264790-002-1405ND
2018-05-144790-007-1010ND
2018-05-234790-009-1030ND
2018-08-284790-009-0940ND
2018-08-284790-007-0910ND
2018-11-054790-009-1115ND
2018-11-054790-007-1000ND
2019-02-044790-008-1330ND
2019-02-044790-007-1400ND
2019-02-044790-009-1255ND
2019-05-064790-007-1000ND
2019-05-064790-009-1130ND
2019-05-074790-008-1030ND
2019-08-134790-007-1045ND
2019-08-134790-009-1115ND
2019-08-134790-008-1120ND
2019-11-044790-007-1210ND
2019-11-044790-008-1030ND
2019-11-044790-009-1120ND