Do you know where your leach field is? That water doesn't have to be "wasted" if you have productive plants growing there. It doesn't have to be food, it could be coppice
wood for the fireplace or crafts or something for the
soap business.
Retrofitting plumbing gets very expensive very fast, and probably not a good use of money unless you have special circumstances--you have to replace pipes anyway because of age, grey water would prevent having to redo the whole septic, etc.
"You must be the change you want to see in the world." "First they ignore you, then they laugh at you, then they fight you, then you win." --Mahatma Gandhi
"Preach the Gospel always, and if necessary, use words." --Francis of Assisi.
"Family farms work when the whole family works the farm." -- Adam Klaus