Super septoria

[Going Green]

Hi everyone. I'm new to this forum and I've got a challenge for you. I have septoria on my tomatoes. Every year. No matter what. I swear it's some super mutant strain that resists all efforts at control. I've tried everything. Crop rotation, leaf removal, low and careful watering, different cultivars, baking soda, copper sulfate, even Daconil. If it's been suggested on the internet I've tried it. But it always comes back and once it appears there's no stopping it. I have brandywine now on a completely new never before been gardened plot and they are totally infested. I'm 90% sure it's septoria. None of my coworkers has this pest in their tomatoes. I'm at my wits end. Does anyone know a trick or tip for getting rid of this? I would truly be forever in your debt.