A Jack and Jill bathroom is a bathroom with two doors, accessible from two bedrooms. High efficiency toilets combine minimum water usage with maximum flushing power. Walk-in bathtubs can allow users who have previously been unable to bathe on their own, without assistance, to do so comfortably and safely. "Soaking tubs" are ergonomically designed, as well as being significantly deeper than standard bathtubs, allowing bathers to be fully immersed. Switching to water-efficient toilets and other plumbing fixtures can save as much as $50 to $100 a year on water and wastewater bills for the average family.