Depends entirely on the type ...

Depends entirely on the type of crop orif you are using it for landscaping. Crops eaten raw for example have different standards especially for Total and Faecal Coliforms. Unfortunately varies from country to country so you will have to check locally. If for landscaping, Plants are highly adaptable so the BOD should not be a problem nor should the COD if from domestic only sources. Amount of water, phosphates, nitrates will determine what plants can grow.