1. The water from the old well was undrinkable due to its foul smell and taste.
2. The coffee at the gas station was undrinkable, so I had to throw it away.
3. The milk had gone bad and was undrinkable, so I had to pour it down the sink.
4. The tap water in the city was undrinkable, so residents had to rely on bottled water.
5. The wine was undrinkable after being left open for too long.
6. The soda had gone flat and was undrinkable, so I had to get a new one.
7. The cocktail was so strong that it was undrinkable for most people.
8. The tea was undrinkable without any sugar to sweeten it.
9. The beer was undrinkable due to its skunky taste.
10. The lemonade had been left out in the sun for too long and had become undrinkable.