in 100 liters a day how many liters that save water using low flow fixtures can you show also the calculation

Sure, I can help with that. However, I need more information to provide a precise answer. The amount of water saved using low-flow fixtures depends on the specific type of fixture and its flow rate.

For example, let's consider a standard showerhead, which has a flow rate of about 15 liters per minute, and a low-flow showerhead, which has a flow rate of about 9 liters per minute.

If you take a 10-minute shower, with a standard showerhead, you would use:

15 liters/minute * 10 minutes = 150 liters

With a low-flow showerhead, you would use:

9 liters/minute * 10 minutes = 90 liters

So, in this case, you would save:

150 liters - 90 liters = 60 liters per shower

If you take one shower a day, that's a saving of 60 liters a day.

Please note that this is a simplified example and actual savings can vary based on factors like the specific flow rates of your fixtures, how long you run the water, and how many times a day you use the fixtures.