Abstract: A multi-user bottle including a fluid storage chamber, an opening to the fluid storage chamber, and an attachment to a detachable fluid reservoir apart from the opening. The bottle may include the detachable fluid reservoir. In some aspects, the attachment to the detachable fluid reservoir is on an opposite side of the bottle from the opening. Preferably, the detachable fluid reservoir, when attached, cannot contaminate the opening. The fluid storage chamber may also include detachable section to facilitate filling of the bottle.