Municipal water treatment plant. Get water from 20 wells, 19 are 55' deep or so and one is 2200'. Basically babysit and repair a large number of pumps, chemical feeders, and process equipment. Do some simple lab tests. If the machines are happy I am happy and don't work too hard. Two shifts I work 5 days a week, one shift four, and one shift three. Weird hours but lots of free time.
Part-time blacksmith for 20+ years.