Question: Where does rome's drinking water come from?
Disambiguated questions and answers: question: What kind of fountain does modern rome's drinking water mostly come from?
What lake does modern rome's drinking water mainly come from?
What device does ancient rome's drinking water get transported through?
answer: nasone
fontanella
Lake Bracciano
aqueducts
aqueduct
Natural Questions answer: aqueducts (from the Wikipedia article "Roman aqueduct")