[wahern]

This is precisely why municipalities are permitted to impose exactions on a project--so that developers can't unfairly offload infrastructure costs on the public. If the additional sewage volume of a project is going to overflow pipes 5 miles away, municipalities can and regularly do exact fees as a condition of approval to cover the costs of upgrades.

Unfortunately, these days exactions are also abusively imposed to offset the supposed costs of "gentrification" and other unquantifiable social phenomena, and sometimes the dollar value of such imaginary costs conspicuously set so high as to make a development financially unviable. This is how cities like SF force developers to include below-market-rate units or to make cash contributions to low-income housing projects, even when a project is not actually displacing any pre-existing tenants.