I know why. We previously lined the water pipes we drink from with asbestos. Don't believe me? Do a dial before you dig of any pipe connections to any pre-existing subdivisions from the 60's, 70's, 80's etc...
source: dialbeforeyoudig.com.au
If you think asbestos can only damage cells of the body if inhaled, then I can't help you.
source: Google. (2025). Gemini 2.5 Pro (Preview 31-05) [Large language model]. Retrieved from https://ai.google.dev/gemini-api/docs/models
"However, in 2010 it was discovered that asbestos cement pipes can degrade as a result of the action of various bacteria in drinking water distribution systems. It was found that the bacteria present favor the acceleration of free lime leaching and the dissolution of calcium-containing minerals in the hydrated cement matrix." source: Peña-Castro M, Montero-Acosta M, Saba M. A critical review of asbestos concentrations in water and air, according to exposure sources. Heliyon. 2023 Apr 25;9(5):e15730. doi: 10.1016/j.heliyon.2023.e15730. PMID: 37305461; PMCID: PMC10256854.
