That's a bad idea- please don't anyone do that. Hoses have warning tags on to remind (or inform) us that hoses are made of materials that can leach some unhealthy chemicals into the water- hence the yucky taste, your first clue. Since we're bigger & tougher than our snakes, it could affect them long before it makes us sick.
I used to have an old rubber hose (came with the house) that would produce foamy water for a few minutes after I'd turn the water on. I wouldn't even water my plants with it! I mean, maybe we are being too paranoid but it never hurts to err on the side of caution!