If you have a water heater in the unit there may be a shut off before that, usually at the floor or follow the cold side to a shut off. There may be an access panel behind the shower, possible in a hall closet but not always and there might be shut off valves there, but not likely. If your water heater is in the basement, there should be a shut off for each unit there.
You have to replace the cartridge
millions of gallons of water
It depends on the length of the shower, and the flow of water. Shower heads can usually allow anywhere between 2.5 and 5 gallons of water a minute. Most baths require 30-50 gallons of water. To save energy the length of the shower x, multiplied by the water flow y, must equal less than the amount of water used in the bath. X*Y (Minutes/Gallons) < Gallons in Tub
15 gallons
Most newer shower heads restrict water flow to around 3.5 gallons a minute max. . .this would equal around 35 gallons for a 10 minute shower
That depends on the fuel and the cost of the fuel and the temperature of mains water and the shower.
depends on how much you want, like i have 700 gallons.
4 gallons if head delivers 2 gallons/minute
over 10 gallons PER DAY
6.3 gallons of water us used
A shower head would use between 60 to 75 gallons for a 30 minute shower.
Standard high-flow aka unrestricted shower heads made before 1995 were water-guzzlers. As of 1995 shower heads must be low-flow, with a rate of 2.5 gallons per minute.