Pay As You Go
My water bill is composed of two parts - the supply charge that is on the metered consumption and a waste water charge that uses the consumption figure plus a figure based on the rain/surface water catchment area of the property.
With IoT connected "intelligent" WCs, the waste water charge can be fine tuned and reported (c.f. electricity smart meters). The water company could send you an itemised bill, listing each and every flush and the waste matter load/burden. Or even have direct billing "Pay-As-You-Pee-and-Poo"/Pay-As-You-Go.
Biting the hand that feeds IT
