Improving cost by considering treatment cost

[LaurelineJ]

Depending on the use and source of water, treatment costs differ. A first crude representation of this will be done by considering two tiers of water quality (drinking/non-drinking) and have the associated treatment cost in function of the source of the water.

What needs to be done/modified:

• change the water demand component by aggregating demands from the various sectors in two variables that distinguish drinking water from non-drinking.
• change the allocation component: for each point of source, we need to distinguish which withdrawals will be used to meet high- or low-quality demand. We need to add the corresponding parameters, variables, timestep functions, and constraints matrix generation functions.
• change optimization-given: both high- and low-quality demands need to be met.
• create/complete optimization configuration file to specify if we want to make a water quality distinction or not.

The first step consist in collecting data for treatment cost in function of the source of water. We will start with national values and move to regional values if data is available.