Know Your Environment. Protect Your Health.

Silver

Portland Water District - Greater Portland

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND10ND
2023ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-07-101807-01040-001ND
2019-06-041906-00591-001ND
2020-06-162006-02278-001ND
2021-06-092106-01445-001ND
2022-06-212206-03375-001ND
2023-06-142306-03033-001ND