Is this they’re way of saying climate change will cause people to piss and crap more?
Over time, all sewage systems fail, regardless of whether climate changes or not. Blockages occur, causing overflows, or the material of which the sewer pipes are made erodes, corrodes, or simply disintegrates, causing subterranean discharges, some seeping into the ground water from which the drinking water is drawn.
There is no correlation, and even so, correlation is not causation.