Asbestos
Four Way Special Utility 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.
11
Samples
1
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 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 3.15 MFL | 3 | 1 | ND - 9.46 MFL |
| 2022 | 0.05 MFL | 4 | 1 | ND - 0.20 MFL |
| 2023 | 0.10 MFL | 4 | 1 | ND - 0.38 MFL |
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 |
|---|---|---|
| 2021-06-02 | CAL21065197 | 9.46 MFL |
| 2021-06-24 | CAL21066018 | ND |
| 2021-12-09 | CAL211211026 | ND |
| 2022-03-07 | CAL22032025 | 0.20 MFL |
| 2022-04-20 | CAL22043689 | ND |
| 2022-08-08 | CAL22087897 | ND |
| 2022-10-17 | CAL221010487 | ND |
| 2023-01-09 | CAL2301219 | ND |
| 2023-04-24 | 3239901 | ND |
| 2023-08-02 | 3340897 | 0.38 MFL |
| 2023-10-10 | 3417083 | ND |