Which Costs More Toilet Paper or Water?

Do toilet rolls cost me more than my water bill? I dunno. Let's find out. My comedy books, UK links: A Yorkshire Christmas Carol: https://amzn.eu/d/0enwVmjW The Moron Survival Guide: https://amzn.eu/d/0eWS1o1d Lavender and Brown: https://amzn.eu/d/08twc7PT