“Migration of aluminum from food contact materials to food—a health risk for consumers? Part II of III: migration of aluminum from drinking bottles and moka pots made of aluminum to beverages” ⌘ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5388725/

Findings are that drinking coffee from a moka pot made by aluminum will result in a TWI (tolerable weekly intake) of 4%, and that washing the pot in the dishwasher sigificantly increases the aluminum concentration in subsequence brews.