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EWG's Tap Water Database — 2019 UPDATE

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Asbestos

Los Angeles County WW District 4 & 34-Lancaster

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013N/A00N/A
2014ND10ND
2015ND50ND
2016ND50ND
2017ND30ND

MFL = million fibers per liter

State and national drinking water standards and health guidelines

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
2012-01-245442-054-0937ND
2012-01-245442-053-0903ND
2014-03-125442-093-0956ND
2015-11-175442-026-0817ND
2015-11-175442-041-0757ND
2015-11-175442-035-0850ND
2015-11-195442-016-0836ND
2015-11-195442-023-0856ND
2016-02-095442-016-1028ND
2016-03-095442-023-1041ND
2016-04-205442-026-1016ND
2016-04-205442-041-0934ND
2016-06-275442-095-1050ND
2017-11-212283-045-0935ND
2017-11-212283-055-0940ND
2017-11-212283-063-1010ND