@morehumble That is a low bill tbh. Gas is a little higher than I'd expect but electricity much lower.
Check next month's bill and see how it compares, and check if the gas bill says it was estimated.
You probably have $40+ of daily charges for gas for a month, also often billing periods may not match up between gas and elec e.g. may have been a 40 day gas bill and 28 day elec bill.
As has been said, likely gas water heating, this usually makes up around 1/3rd of energy use(on average) and could be more if people have long hot showers.
Either way, $215 for a months energy for 4 people isn't something to complain about.