Yes, WASHSTANDS is a Scrabble word!

Letter values in Scrabble US: W 4, A 1, S 1, H 4, S 1, T 1, A 1, N 1, D 2, S 1.

Is it a valid word?

WASHSTANDS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

furniture consisting of a table or stand to hold a basin and pitcher of water for washing: `wash-hand stand' is a British term
a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face

Also: wash-hand stand.