Service the debt by selling assets of the C suite that got them into this mess. Charge corporations real taxes and levy fines and penalties that are realistic to the damaged caused. Essential services should never be private because this is exactly what happens. And the end user is penalized, and a couple hundred extra € will continue to increase until noone can pay their bills, and then the business will go insolvent anyway, and people will be left without water service anyway.
We need to stop subsidizing corporate failures, so they can privatize the profit.