A liquid delivery apparatus for a bicycle includes a container adapted to contain a liquid and a tube having a first end and a second end. The container is releasably mountable to a selected one of a seat rail and a seat post of the bicycle. The container has a first opening and a second opening. The first opening is adapted to receive a liquid and is disposed above a normal liquid level line of the liquid when present in the container. The second opening is disposed below the normal liquid level line. The first end of the tube is attachable to the container in fluid communication with the second opening. The liquid when present in the container is delivered to a mouthpiece attached to the second end of the tube.