Know Your Environment. Protect Your Health.

Silver

City of Colusa

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.

 

5

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
2019N/A00N/A
2020ND50ND
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2020-04-07CA0610002_003_003-202004070840ND
2020-04-07CA0610002_002_002-202004070800ND
2020-04-20CA0610002_004_004-202004200950ND
2020-04-27CA0610002_005_005-202004270840ND
2020-04-30CA0610002_006_006-202004300800ND