Know Your Environment. Protect Your Health.

Asbestos

Ventura County Waterworks District No. 19 - Somis

NOTE: Ventura County Waterworks District No. 19 - Somis purchases water from Calleguas Municipal Water District which is required to test for asbestos. Sample information shown below was taken by Calleguas Municipal Water District.

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND90ND
2019ND70ND
2020ND30ND
2021ND80ND
2022ND70ND
2023ND10ND

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

NOTE: Ventura County Waterworks District No. 19 - Somis purchases water from Calleguas Municipal Water District which is required to test for asbestos. Sample information shown below was taken by Calleguas Municipal Water District.

Date Lab ID Result
2018-02-13CA5610050_015_015-201802131050ND
2018-02-13CA5610050_016_016-201802130945ND
2018-02-26CA5610050_004_004-201802260915ND
2018-03-07CA5610050_013_013-201803071320ND
2018-03-08CA5610050_012_012-201803081000ND
2018-03-08CA5610050_014_014-201803081330ND
2018-03-18CA5610050_014_014-201803181330ND
2018-04-30CA5610050_017_017-201804301030ND
2018-11-05CA5610050_004_004-201811050820ND
2019-01-29CA5610050_004_004-201901290930ND
2019-02-04CA5610050_018_018-201902040945ND
2019-02-05CA5610050_023_023-201902050945ND
2019-02-05CA5610050_022_022-201902051020ND
2019-02-07CA5610050_020_020-201902070840ND
2019-02-11CA5610050_021_021-201902110930ND
2019-02-19CA5610050_019_019-201902191100ND
2020-01-03CA5610050_007_007-202001031030ND
2020-01-07CA5610050_008_008-202001071030ND
2020-01-30CA5610050_004_004-202001300930ND
2020-02-10CA5610050_015_015-202002101145ND
2020-02-10CA5610050_009_009-202002101145ND
2020-02-10CA5610050_006_006-202002101005ND
2020-02-12CA5610050_010_010-202002121110ND
2020-11-04CA5610050_004_004-202011040830ND
2021-02-10CA5610050_015_015-202102100830ND
2021-02-11CA5610050_004_004-202102110920ND
2021-02-12CA5610050_006_006-202102121115ND
2021-02-17CA5610050_017_017-202102171100ND
2021-02-17CA5610050_013_013-202102171000ND
2021-02-19CA5610050_013_013-202102191040ND
2021-02-22CA5610050_016_016-202102221117ND
2021-02-23CA5610050_014_014-202102231000ND
2022-01-03CA5610050_004_004-202201030920ND
2022-01-04CA5610050_019_019-202201040850ND
2022-01-06CA5610050_023_023-202201060920ND
2022-01-13CA5610050_020_020-20220113NULND
2022-01-19CA5610050_022_022-202201191200ND
2022-01-19CA5610050_018_018-202201191115ND
2022-07-27CA5610050_021_021-202207271040ND
2023-03-15CA5610050_004_004-202303150900ND
2023-03-21CA5610050_006_006-202303211000ND
2023-03-21CA5610050_007_007-202303211100ND
2023-03-22CA5610050_009_009-202303221140ND
2023-03-23CA5610050_007_007-202303230830ND
2023-09-21CA5610050_010_010-202309211250ND