Another word for down-the-drain

Sofia watched the last of the blood swirl down the drain.

At the house, she washed her hands, watching the water turn red and swirl down the drain.

"Perhaps, if you promise him not to drink it except with me, he'll spare the rest of those precious bottles," Andre said, gaze on the wine going down the drain.

She glanced down to watch the blood stream down the drain then held up her arm.

The water stung her skin, and she grimaced as her attacker's blood ran down the drain.