Checked locally today and my pH/ppm is normal for my water company, ~7.5/120

The last time I thought my pH was going crazy, it turned out to be the pH probe in my meter going bad. It got very slow to calibrate and eventually stopped calibrating at all. I use a Hanna meter, so replacement was fairly simple..

I'm not sure the fall runoff would significantly affect it, unless possibly on a well. Even then, it's a long way to source.. when I used well water (Western Washington), it was also consistent year round.

Peace,

Farmer Rich