Years ago I had the idea of watering my plants with condensate from my
dehumidifier. (At the time I was buying distilled water for that purpose.)
Someone knowledgeable told me the condensate was toxic. I have no
recollection of why that was (or even why I was watering my plants with
distilled water, for that matter) or if your filters would help at all; but
the idea is so obvious that it would be done if practical.