Know Your Environment. Protect Your Health.

Silver

North Castle Water District #4

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND60ND
2021ND60ND
2022ND60ND
2023ND60ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-07-24AU15716-INSND
2018-07-24AU15718-INSND
2019-08-05AV16474-INSND
2019-08-05AV16471-INSND
2020-02-25AW03861-INSND
2020-02-25AW03853-INSND
2020-02-25AW03855-INSND
2020-07-13AW13180-INSND
2020-07-29AW14499-INSND
2020-08-27AW16635-INSND
2021-03-02AX04052-INSND
2021-03-03AX04224-INSND
2021-03-03AX04226-INSND
2021-07-06AX13097-INSND
2021-08-03AX15569-INSND
2021-08-03AX15556-INSND
2022-03-01AY03618-INSND
2022-03-01AY03616-INSND
2022-03-01AY03622-INSND
2022-07-19AY12490-SECND
2022-07-20AY12624-INSND
2022-07-21AY12753-INSND
2023-03-21AZ5922909-INSND
2023-03-21AZ05015-INSND
2023-03-22AZ05102-INSND
2023-07-10AZ12341-INSND
2023-07-10AZ12342-INSND
2023-07-25AZ13469-INSND