Thanks, as I expected it isn't a straightforward answer. :)
Will include pressure tanks for now in planning cost estimates. Detailed design can consider the issue further.... I think we will end up developing hydraulic models of each system.
I imagine most of the systems will have zero flows...
I am working on an investment plan for a number of small scale water supply systems. The technical capacity for O&M is currently relatively low.
My question is about the need for pressure tanks.
Some of the systems have pressure tanks (hydropneumatic tanks) to manage pressure fluctuations...