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EWG's Tap Water Database — 2019 UPDATE

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Silver

Portales Water System

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND60ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2012-09-111209493-002BND
2012-09-111209494-002BND
2013-09-051309195-002BND
2013-09-051309194-002BND
2013-09-051309193-002BND
2013-09-051309192-002BND
2013-09-051309191-002BND
2013-09-051309189-002BND