It’s not rocket science building reservoirs
Panel engineers are about the most stringently regulated civil engineers and they are now all about 70 and due to retire. Reservoir works are a absolute pain in the arse.
It’s not rockets science but it’s not easy
It’s
Ecology
Economy
Geology
Hydrology
Planning
Civil
Structural
In Scotland 10000cubic meters is a reservoir, that’s 4 olympic swimming pools once it’s that size it’s a serious undertaking
In England it’s still 25000 but I think that’s about to drop down.
The water companies are a disaster but radioman you are talking absolute nonsense about how simple the problem is… 15% leakage is considered the break even point where financial benefit balances with maintenance costs.