Just last week a bill came in for almost 500€ for just 1.5 hours of work + 45 minutes travel time: sewage pipe sealing test.
I just checked; we (house construction in postal code 0457x) paid 177 euros gross.
And all the water they pumped in (which was of course not little (and that in the very dry summer) we also had to pay for ourselves on top of that :(
At that point I had to laugh while reading (and it was funny to watch in reality too :) ): One of their giant employees borrowed a tiny little watering can, a little brightly colored children's toy watering can, with a capacity of maybe max. 400ml, partially filled it with water and let it run through. The water came out again at the end and we could have even collected and reused it. ;-) However, he also had to climb down into a pit for the money. ;-)
Many municipalities/providers want it as proof. For us it was not mandatory, in the neighboring municipality it was.
For us this test is also mandatory.
And here are our energy provider prices from 01.01.23: --------------------------------------------------------- Electricity consumption price: previously gross 27.78 --> from 01.01.23 gross 48.06 Gas consumption price: previously gross 12.65 --> from 01.01.23 gross 18.96 (The basic price remains the same with both providers. We also do not have a special contract, but are still initially in basic and substitute supply.)