Asbestos
Heritage Ranch Community Services 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
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 | ND | 5 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | 0.50 MFL | 2 | 1 | ND - 1.00 MFL |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/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
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-14 | CA4010012_001_001-201805141334 | ND |
| 2018-05-14 | CA4010012_002_002-201805141341 | ND |
| 2018-11-01 | CA4010012_002_002-201811011307 | ND |
| 2018-11-01 | CA4010012_002_002-201811011308 | ND |
| 2018-11-01 | CA4010012_001_001-201811011307 | ND |
| 2019-05-09 | CA4010012_002_002-201905091240 | ND |
| 2019-05-09 | CA4010012_001_001-201905091217 | ND |
| 2020-05-07 | CA4010012_001_001-202005071035 | ND |
| 2020-11-19 | CA4010012_001_001-202011191330 | ND |
| 2021-06-10 | CA4010012_001_001-202106101322 | ND |
| 2021-11-18 | CA4010012_001_001-202111181020 | 1.00 MFL |