around 25% of that. The Bottled water industry has developed dramatically over the past 30 years and in that time come under huge scrutiny due to the negative environmental effects of packaging and transportation as well as the impacts of production through groundwater extraction.
Installing a water filtration system in the house will eliminate or greatly reduce the dependency on bottled water. Filtration systems range in price from around $20-$200 a water filtration system and can be very easy to install. Add that price to the cost of tap water being just 5% of the average bottled water price and it makes sense to install one. Some products attach onto the end of the faucets and others are installed in the plumbing. 
