Glad to hear you are all on the mend and back in your own home.
Not sure how your septic tank is set up. Ours has 2 chambers which I built myself out of an old water storage tank. We use a submersible pump in the side which is just black water to use on the garden.
So we really do water our own plants 😁
The one here is very large apparently, it was never pumped since it was put in, in 2002! Nice job on building your own system Andy and utilizing it to its fullest potential too :D