Sorry, beer brewing terms.
A hot ferment is what happens for me most of the year, with high temps mid 90s and lows in the 70s, at high humidity. My ferments run like I've placed them in a proofing oven... If it goes wrong, it goes wrong VERY fast.
A lot of the nation cold ferments much of the year 40s to mid 60s. Those ferments take longer, its a slower process. If it starts to go wrong, can maybe be saved.
"Wild" ferments count on whatever wild yeast and bacteria in the environment to start your ferment. For good or ill. Controlled ferments are usually begun with a starter of some sort. SCOBY, Sourdough starter, Red Star Yeast (like used for bread making), the "mother" from ACV, live active yogurt, kefir, even the yeast husks from the bottom of a bottle conditioned ale. You have options. Though the amount you can initially ferment with confidence is determined by the amount of starter available to you.
/edit and I have well water from a deep aquifer, no chlorine. Very limited other contaminates. It is rather basic (limestone caverns).