Disclosed herein is a device for facilitating siphoning of greywater (graywater) or gently used water. An adapter is designed to fit onto the end of a hose or tube. The adapter is manually held tightly or attached by friction to a spigot or faucet. The faucet is turned on and running water primes the hose. The adapter is then placed under the surface of a collection of greywater in a sink, tub, clothes washer and the like. Greywater is then allowed to flow to a garden, lawn, cistern or other place where the greywater can be put to use instead of shunting it into a sewer. The device includes a funnel-shaped portion and a threaded portion. The device is made from a pliant material such as a silicone rubber or plastic.