Know Your Environment. Protect Your Health.

Silver

Columbia Heights 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND80ND
2020N/A00N/A
2021N/A00N/A
202225.0 ppb43ND - 45.0 ppb
2023N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2019-03-2535457368001ND
2019-03-2535457368002ND
2019-03-2535457368003ND
2019-03-2535457368001ND
2019-03-2535457368002ND
2019-03-2535457368003ND
2019-06-1935477220001ND
2019-06-1935477220001ND
2022-03-29B2201642-00143.0 ppb
2022-03-29B2201642-00245.0 ppb
2022-03-29B2201642-00312.0 ppb
2022-03-29B2201642-004ND