I grew up in a house on a septic and had no clue that you were not supposed to flush tampons. When we bought this house, I learned that it was better not to flush. So, now that it is MY house, I don't flush tampons, which I hate, and I changed to one ply TP from the deluxe 2 ply Charmin. To offset this loss, I upgraded our paper towels to Viva. We also compost and I do miss the disposal-mostly because I am afraid of "sink gunk". Whenever possible I have DH clean out the sink and when I have to do it, I grab a lot of my Viva paper towels to prevent any possible contact! I wash multiple loads of clothes, take long showers and run the dishwasher at the same time with no issue.
How much does it cost to pump? We haven't done this, but our house is only 6 years old.