I love me a good utility stock. As far as defensive investments go, they are often about as stable an investment as you can find in this world. There are no sure things in life, but betting on people to continue to use water and electricity is about as close to a guarantee as you can find in common stock investing.
York Water is one of those utility investments that should make an income investor want to sing. It really has the most beautiful dividend history of any company I have ever come across. York Water has been paying uninterrupted dividends since 1816. That is awesome in every single sense of the word. Your great-great-great-great-great grandfather could have come over on the boat from Europe, bought 100 shares of York Water stock, and you, the great-great-great-great-great grandchild would still be collecting the cash payments every ninety days today. Oh, and the dividend has grown three thousand fold since then, so you would literally be a water baron right now.