Know Your Environment. Protect Your Health.

Asbestos

St John Water District 3

Asbestos is a mineral fiber introduced into water by the dissolution of asbestos-containing minerals and from decay of asbestos cement in water mains. Asbestos causes cancer when ingested or inhaled.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND60ND
2020N/A00N/A
2021ND20ND
2022N/A00N/A
2023N/A00N/A

MFL = million fibers per liter

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 7 MFL

The legal limit for asbestos, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s.

MFL = million fibers per liter

All test results

Date Lab ID Result
2018-10-2335425995001ND
2018-10-2335425995003ND
2018-10-2335425995001ND
2018-10-2335425995003ND
2019-02-1235447920001ND
2019-02-1235447920002ND
2019-02-1235447920003ND
2019-02-1235447920001ND
2019-02-1235447920002ND
2019-02-1235447920003ND
2021-10-2035672418001ND
2021-10-2035672422001ND