Know Your Environment. Protect Your Health.

Silver

St John Water District 1

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
2018ND20ND
2019ND20ND
2020ND10ND
2021ND10ND
2022ND10ND
2023ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-2335370117004ND
2018-01-2335370117004ND
2019-01-2235444040001ND
2019-01-2235444040001ND
2020-03-05B2001219-001ND
2021-01-28B2100470-001ND
2022-02-02B2200528-001ND
2023-03-20B2301168-001ND