"I am fully aware of the hours requirement for this role as a water treatment operator and am able to commit to day, evening, night, weekend, and holiday hours. In my personal time, we have a very busy family with kids' activities. Fortunately, my wife works a day shift job on the weekdays and we have solid backup plans for child care with close family nearby. One thing I'm hoping to understand is how scheduling works. Are you able to shed more light on the shifts I would be working if I'm offered the position?"

If the water treatment operator position calls out the specific hours for the job in the job posting, that is great! Make sure to reiterate that you will be able to meet the requirements. But a lot of time, the hours for the job will be more generic. If this is the case, be sure to give an overview of your availability while remaining open to any scheduling that would come your way. To be fair to yourself, you should also be open and honest about any scheduling conflicts that you may have with your family and your personal life. In the end, your interviewer knows that every individual will have their own unique personal commitments, and being honest about them up front is the best.