And where would those places be? Here in NJ it's not only legal, but
usual for tenants to pay for utilities, including water and sewer.
You may find some whacko places where laws say otherwise, but it
certainly not "most places."
And even beyond that, he can certainly just jack up the rent by an
appropriate amount, making any such law not only stupid, but close to
worthless.
If sewer rates are not crazy, and the city isn't about to start a big
project,[secondary treatment, combined sewer overflow, anything that
sasy 'consent decree] go with the sewer. Grinder pumps are fairly
reliable, and with a rental unit, you don't need the hassles
You'd go with the sewer without even understanding what the cost of the
conversion, plus the monthly expense, etc is vs the cost of fixing the
existing system?

The tennant pays the bills directly for all the other utilities and the
sewer would be based on the water use since it's not metered
seperately. That's pretty standard in these parts.