Know Your Environment. Protect Your Health.

Asbestos

Harris County Municipal Utility District 399

NOTE: Harris County Municipal Utility District 399 purchases water from Harris County MUD 200 Cranbrook which is required to test for asbestos. Sample information shown below was taken by Harris County MUD 200 Cranbrook.

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.

 

1

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020N/A00N/A
2021ND10ND
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

NOTE: Harris County Municipal Utility District 399 purchases water from Harris County MUD 200 Cranbrook which is required to test for asbestos. Sample information shown below was taken by Harris County MUD 200 Cranbrook.

Date Lab ID Result
2021-02-08CAL21021187ND