City pages built only where the local signal is real.

Buffalo sits at the extreme old-housing end of recent sold-home age rankings.

The strongest local signal here is not a special sewer program. It is extreme housing age and the uncertainty that comes with buried infrastructure in very old homes.

Chicago sold-home age remains old enough that cast iron and buried-line diligence are normal questions.

MWRD says most of the region uses combined sewers, so backup and wet-weather context matter more than generic plumbing copy suggests.

Cleveland sits in the oldest sold-home cohort, which raises the commercial value of old-line screening.

Cleveland Water explicitly tells customers they may be responsible for their water and sewer lines and promotes optional protection.

Philadelphia-area sales skew old enough that buried-line diligence is commercially relevant rather than theoretical.

Philadelphia's official water and city pages both describe sewer laterals as customer-maintained lines connecting the home to the main.

Recent sold-home age data puts Pittsburgh among the oldest large metros in the country.

Pittsburgh Water says the entire sewer lateral from the building to the main is the property owner's responsibility.