Here your max sewer bill is set based on the average water use of 3 winter months. If you go over that in the summer, we assume it’s mostly landing in the yard and not the sewer.

You usually can get a credit for la large water usage that doesn't go in the drain. Most commonly done for filling swimming pools.

Our sewage bill is determined by the lowest two months of water usage from Dec-Feb plus a base cost.

They’re separate in a lot of places