Keep septic or go on city sewer on rental property

[Kyle Fitzpatrick]

I am currently under contract for tow studio houses and a two car garage for 42k. both rent out for 600 a month with the garage at an extra 100. Each house has its own septic tank and one has an aerator. I have no clue what the difference is but I do know the city is running sewer next door and would like this property to be under sewer as well. What are your thoughts on doing this vs keeping septic? I am nervous property taxes will go up as well (currently 750 comps are 2000). Also are there any good tips to maintaining a septic? I would like to know what YOU would do and why. Thank you!