Comment by gcanyon

This is not new. I just watched a video a few days ago talking about Levittown, built in the post-WWII boom, where the house lots were just big enough to build septic systems for each, given the current state of the ground/drainage. So as the soil compacted/absorbed the output of the houses, and as people installed washing machines, and and as people converted their attics to additional bedrooms (which they were originally told was fine to do) and occupancy/water use went up, hundreds (thousands?) of backyards became soft, smelly swamps. Eventually the whole neighborhood had to switch to sewers, at enormous expense.