Asbestos
City of Petaluma
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.
9
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | 0.15 MFL | 2 | 1 | ND - 0.30 MFL |
| 2019 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2015-03-19 | 1866-057-1400 | ND |
| 2016-03-09 | 1866-029-0930 | ND |
| 2016-06-22 | 1866-030-1145 | ND |
| 2016-09-22 | 1866-028-0945 | ND |
| 2016-12-19 | 1866-031-0930 | ND |
| 2017-09-13 | 1866-026-1005 | ND |
| 2018-03-14 | 1866-009-0835 | 0.30 MFL |
| 2018-06-06 | 1866-010-0845 | ND |
| 2019-03-13 | 1866-051-1058 | ND |