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EWG's Tap Water Database — 2021 UPDATE

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Silver

Hillview Water Company-oakhurst/sierra Lakes

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND10ND
2016N/A00N/A
2017ND120ND
2018ND70ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-055810-034-0940ND
2014-03-055810-033-0900ND
2014-03-055810-032-0853ND
2014-03-055810-031-0910ND
2014-03-055810-030-0925ND
2014-05-225810-028-1425ND
2014-05-225810-024-1522ND
2014-05-225810-010-1602ND
2014-05-225810-009-1555ND
2014-05-225810-007-1545ND
2014-05-225810-003-1458ND
2014-05-225810-002-1510ND
2015-09-155810-001-1059ND
2017-07-275810-041-0910ND
2017-07-275810-040-0840ND
2017-07-275810-039-0920ND
2017-08-015810-002-1545ND
2017-08-015810-003-1555ND
2017-08-015810-028-1510ND
2017-08-025810-034-0908ND
2017-08-025810-007-0851ND
2017-08-025810-030-0905ND
2017-08-025810-031-0919ND
2017-08-025810-032-0933ND
2017-08-025810-033-0956ND
2018-04-305810-024-1445ND
2018-04-305810-048-1432ND
2018-04-305810-047-1410ND
2018-04-305810-046-1410ND
2018-07-255810-010-1025ND
2018-07-255810-009-1000ND
2018-09-195810-001-0911ND