It seems common sense that a shower uses less water than a bath, but it really boils down to how long you take to scrub up.
A quick shower is more water-efficient than a bath, but a long hot shower is likely to use more as it just drains away instead of filling up the tub.
On average a bathtub will hold around 80 litres, whereas a modern shower over an eight-minute period uses about 62 litres.
When you’re choosing a shower it’s worth paying attention to the shower head and water flow rate – as well as your showering speed.
A big consideration is the strength of the shower. High volume power showers send water jetting out so fast it can knock you back and actually hurt. These can use more water in a few minutes than a full bath.
The Cost Of A 5 Minute Shower
This is a calculation based on averages so if you want an exact figure you have to consult your water and electricity unit charges.
A five-minute shower:
A power shower running on 12kws an hour creates 1kw of electricity at a price of 14p per k/w.
If your shower runs at ten litres a minute and water costs 0.3p per litre five minutes cost 15p
So, a five-minute shower works out at 29p. If four of you are showering that’s £1.16 a day. Times 31 days in a month? £35.96
Remember to use your own prices for an exact figure.
Shower Heads Make The Difference
A shower head controls water speed, consumption and spray pattern. There are lots on the market including water-saving shower heads.
If you’d like to cut down on water they could be an option for you.
Here’s how you can tell before investing.
- Grab a bucket
- Take the shower head off
- Turn on the shower and let it flow for one minute
The amount collected in the bucket shows litres per minute supplied to your water system.
If there’s more than nine litres in there you could benefit from a water-saving showerhead.
How Do Water Saving Shower Heads Work?
They reduce consumption in several ways
- Aerating the water so air is pushed through
- They regulate how much water flows through the head
- A flow restrictor pulses the water and reduce the flow.
They still provide a really lovely consistent shower but can bring down your water bill, especially if there are lots of showers happening each day.
In short, a shower with flow restriction that’s used for a few minutes each day can save water, but a powerful power shower that the whole family luxuriate beneath will use lots of water and cost more.