Environmentalist: ‘I shower once a week. Here’s why you should too’
'It is clear my daily shower habit resulted from falsely imposed cultural norms'
'The daily bath or shower, then, is terrible for the environment and our bank balances. That’s one reason I have reverted to a weekly shower, with a daily sink-wash that includes my underarms and privates.'
http://www.theguardian.com/commentisfree/2016/mar/08/shower-once-a-week-polluting-environment
The average 10-minute shower uses 60 litres of water. A power shower uses three times that and a bath about 80 litres.