Did you meter the postage or regular stamp?

I tested the meter tonight with no water running for 3 hours and the meter did not move.

It would be worth considering the cost of separate metering for this one.

Im not really sure what else to do about my water situation my bill on Average is about 75$ water and 40$ sewer a month well recently I received a bill for 413$ for one month they came  and looked at my meter and said there wasn't any leaks reading so I had my landlord come  to look under the house a small leak was found but said it couldn't have went up that high I have a 600$ water bill and a 700$ sewer bill and no leaks were found what do I do now? 

@Willem Hendriks I break down monthly my costs for repairs & maintenance, legal fees, interest, taxes, water, sewer & house meter electricity if present.  

hi jeff. you check with the local authorities on everything. first, go see the city treasurer. make sure the assessment shows that the house is worth what you will be paying. then, usually in the same building, talk with the code enforcement officer. they usually know about any issues with any house in their area. he or she can give you all the ugly details about the house and usually let you know when it was last occupied. next, go to the utility companies and ask when the power was last on, when was the gas last turned on, and when was the water last turned on. if it has not been a long time, chances are, things are ok. the only way you are gonna find a water leak is to have water flowing thru the pipes. same for electric. once it is turned on, any issues will show themselves. same with gas. turn it on and see what leaks and what doesn't. water has a main shut off valve, usually by the meter. if any leaks show up, just turn it off and fix the issues. gas has the same thing. usually right on the gas meter is a shut off. if anything leaks, turn the gas off and fix the leak. with electric, thats a different deal. usually the only way to shut off the electric completely is to pull the meter. but, if there are any electrical issues when you have it turned on, shut off the main breaker in that main service panel and fix the issues. its not as complicated as you would think. do your homework and you should be fine

There is already a second meter for natural gas set up on the property so I plan to convert that unit to natural gas as well.

We had a water meter leak & HAD to use a Lic Plumber to change the incoming coupling on the city side and the city had to turn the water off.

This would include things like sensors and controls such as smart thermostats, lighting control, water meter flow sensors.

You can either put it under your name but charge it on top of the rent to each tenant,only keep one water meter connected (instead of multiple ones on same property) and pay it your self and charge higher rent in lieu of that and last, i saw once someone that have some kind of water meter clock connected on the line and can see how many gallons they spent per month, but then you would have to calculate each month the price per gallons consumed,etc.