Cycle Trading

[jaws57]

I live in Central Texas in a rural area which is colder usually than in a city. It is supposed to get down to 0 on Monday. Also if it doesnt get above 32 today then this will be day #2 below freezing. Next 5 days forcast highs are 30 and below. So a week posssible below freeze. Cant be good for pipes. I like to think Im winterized exposed pipes are wrapped but I will spend today making sure.
Im worried about my septic system, it is a aeorobic kind which means sprinklers to get rid of treated water.