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EWG's Tap Water Database — 2021 UPDATE

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Silver

Calleguas Municipal Water 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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
2016ND80ND
2017ND80ND
2018ND80ND
2019ND80ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-105867-010-1130ND
2014-01-105867-006-0945ND
2014-03-215867-007-1125ND
2014-03-315867-006-1020ND
2014-04-115867-009-1010ND
2014-04-185867-011-1030ND
2014-05-075867-004-0915ND
2014-11-185867-008-1315ND
2015-02-025867-004-0815ND
2015-02-195867-017-1415ND
2015-10-215867-014-1020ND
2015-10-275867-016-1130ND
2015-10-275867-015-1300ND
2015-10-275867-012-1030ND
2015-11-045867-004-1340ND
2015-11-055867-013-1140ND
2016-04-045867-004-0840ND
2016-04-055867-023-1000ND
2016-04-055867-022-0930ND
2016-04-065867-021-1150ND
2016-04-065867-020-1305ND
2016-04-065867-019-1030ND
2016-04-065867-018-1100ND
2016-11-075867-004-0745ND
2017-03-215867-004-1040ND
2017-04-175867-009-1245ND
2017-04-175867-008-1005ND
2017-04-185867-006-1130ND
2017-04-195867-011-1050ND
2017-10-165867-004-0855ND
2017-11-065867-007-1015ND
2017-11-065867-010-1120ND
2018-02-135867-016-0945ND
2018-02-135867-015-1050ND
2018-02-265867-004-0915ND
2018-03-075867-013-1320ND
2018-03-085867-014-1330ND
2018-03-085867-012-1000ND
2018-04-305867-017-1030ND
2018-11-055867-004-0820ND
2019-01-295867-004-0930ND
2019-02-045867-018-0945ND
2019-02-055867-022-1020ND
2019-02-055867-023-0945ND
2019-02-075867-020-0840ND
2019-02-115867-021-0930ND
2019-02-195867-019-1100ND
2019-11-045867-004-0800ND