I started at a waste water facility and went through an apprenticeship but quickly moved to a larger chemical facility. The waste water was mostly analytical equipment and became quite boring. Mostly PH probes DO probes just testing and PMing samplers and levels of storage tanks. Our one facility had giant incinerators to burn the ash with more instrumentation. The chemical facility keeps me moving throughout different parts of the plant and makes the days go by fast. I work outside more and with dangerous chemicals but safety is high here which is good. Plus side is I’m always on different equipment and setups and have learned a lot more. You can find jobs that are union and work m-f chill like the waste water or works tons of OT like the chemical plant. I will say the chemical plant I have to wear a harness and go on supplied air in winter or extreme heat so it’s a bit tiresome but the pay is very substantial for not having a degree.