Asbestos
Patterson Water System
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.
19
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 14 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
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 |
|---|---|---|
| 2019-01-15 | 35442597002 | ND |
| 2019-01-15 | 35442597001 | ND |
| 2019-01-15 | 35442597001 | ND |
| 2019-01-15 | 35442597002 | ND |
| 2019-07-24 | 35484634001 | ND |
| 2019-07-24 | 35484634002 | ND |
| 2019-07-24 | 35484634002 | ND |
| 2019-07-24 | 35484634001 | ND |
| 2019-09-09 | 35496011001 | ND |
| 2019-09-09 | 35496011002 | ND |
| 2019-09-09 | 35496011001 | ND |
| 2019-09-09 | 35496011002 | ND |
| 2019-10-22 | 35507060001 | ND |
| 2019-10-22 | 35507060001 | ND |
| 2020-04-28 | 35548548001 | ND |
| 2021-03-25 | 35622193001 | ND |
| 2022-01-06 | 35689160001 | ND |
| 2023-01-30 | 35779491001 | ND |
| 2023-01-30 | 35779491002 | ND |