In my neck of the woods, sewer fees are paid on an annual basis as part of the property tax bill.
Water is billed every two months. Currently my monthly bill averages about $21/month. This is up from the $15/month it cost ten years ago. My bill would be higher, but there is a good well on the property that I use extensively for lawn watering and irrigation. The catch there is that the electricity to run the pump probably costs some, hard to say just how much what with the variable rate tiers, or if it is more or less than muni water would cost.
Jeff, if you live within driving range of a Grocery Outlet or a Big Lots, I suggest looking there for phosphated dw detergents. Right now I can get a rather huge 11 lb box of phosphated Cascade for $7 at Grocery Outlet. It works well, also.