You have to check the ...

You have to check the regulation in your country regarding raw water quality in order to be treated and reuse it for drinking water. In Jordan have such regulation and it is not allowed to use wastewater as raw water to be treated for drinking water, as still you have choice to find better quality of resource water.

If you have choices of much better raw water quality than wastewater this is good for everybody in your country.

For treated wastewater reuse it depend what type of crops you are going to irrigate- e.g. raw eaten vegetables, cooked vegetables, parks, fruit trees, flowers...etc. You have first to read WHO wastewater reuse guideline in order to determine what type of treatment you need, which mainly depend on E.coli counts and other parameters.

Best luck