Great info here, thank you all.
Otherwise seems like Ubiquiti is the first to look at, per
@matthewsx,
@400bird and
@Advil. It is hard to answer the computer proficiency question, I can program in R and am comfortable in the Unix environment, have set up several raspberry pi systems. Not proficient in networking but can google up answers to my questions. I am comfortable going out beyond my competence (and get stuck). Have looked at Home Assistant, which I'd be happy to set up at my house but at Mom's just need a turnkey. Will take a serious look at Ubiquiti and will separate the water monitoring from the rest and will look into Water cop,
@Dhal22 .