Cleveland Water Usage - Comparing Bills

[Austin Tam]

I have two duplexes in Cleveland and the water/sewer bills are really crushing my cash flow.  I looked into the hourly usage and can find patterns in what I'm confident are toilet flushes.  I'm seeing 7.5 gallons per flush. All the toilets in the properties are water-efficient and supposed to use 1.8 gpf or less.  Am I missing something here?  Is anyone else seeing this discrepancy? 

edit: Found this on the Cleveland water website: 

"Cleveland Water meters measure water in thousand cubic feet (one cubic foot equals approximately 7.5 gallons), or MCF. Charges for the amount of water consumed are based on the number of MCF units used during a billing period. One MCF unit equals 1,000 cubic feet or approximately 7,480.05 gallons."

My understanding is the meter's lowest unit of measurement is 0.001 MCF.  So they charge .001 MCF or 7.5 gallons for every flush even though only 1.8 gallons are used.  Is that right??