I have well water, too, which would certainly clog nipple waterers; it clogs everything else, eventually. I am lucky enough to have a galvanized one that does not leak. I also use a plastic one that I've never had any trouble with. They are on concrete blocks, which I agree, the chickens rarely if ever cause to tip. I also have a bowl with a slightly leaky hose faucet, so they never run out -- a necessity during summer around here, IMO, unless you can check on them like hourly.
An inexpensive version of nipple waterers is a rabbit waterer, if you want to experiment. They don't hold much, though. I used to use them for my broodies and baby chicks. And they don't clog!
An inexpensive version of nipple waterers is a rabbit waterer, if you want to experiment. They don't hold much, though. I used to use them for my broodies and baby chicks. And they don't clog!