After looking at our water/sewer/garbage bill, I have come to the conclusion that we use a ton of water. Even during low water usage months, Mr. LL and I average (at the lowest) 50 gallons of water per day. During peak season (May to September), water costs about $.022/gallon, including the sewer rate. Our low flow shower head uses about 5 gallons of water per minute, and one toilet flush uses 1.6 gallons.
We have an on-demand water heater, so we have to wait for a while for the water to warm up. Even if we took only 5-minute showers, it would still take a minute or two for the water to be tolerable. In the winter, it takes longer for water to warm up. If we each took a 7-minute shower at home every day, it would cost $1.54/day. It would cost about $.21 to flush the toilet a total of 6 times per day. For just bathing and flushing the toilet alone, it would cost about $52.50/month. If we were able to cut down to 5-minute showers, we could cut our cost by $.44/day, or about $13.20/month. That would be a 25% reduction.
It’s interesting to me to see that a shower costs $.77, because I haven’t ever looked at the bill closely enough to really parse out the costs.