Construction costs are currently skyrocketing

It just doesn't always work. Are you on the basic supply?

I have already heard twice that although the basic supply tariff is the cheaper one, it is only offered for a limited period, and then the customer is quickly upgraded to a "normal tariff." For example, with ENTEGA. Also, the price can be increased almost arbitrarily within two weeks.

What does that have to do with a mid-terrace house?! Neither water, chimney sweep, maintenance, garbage, property tax nor insurance depend on the existence of a third or even fourth exterior wall!

220 euros per month is not much, we pay about 110 euros just for water for three people... and just wait until inflation and rising energy prices show up in these items as well.

110€ for water for three people? Is there Evian?
We pay 71€ for six people with 2 loads of washing machine and dishwasher daily...

We pay around 6 euros per m3, including wastewater. The garden may be small, but the last summers had long heat periods.

But hopefully you don't pay for sewage in the garden.

If he doesn't have a second water meter, he should...