Hard water build up can be obvious, if you know what you're looking for. Take a look under the lip of your bathroom or kitchen sink faucet. Can you see a white or green crusty-looking build up? What you see are actually mineral deposits from hard water. Do you notice a dark ring around the drains and toilet bowl? If so it's likely you have a hard water problem. Hard water has high concentrations of minerals that over time attach and accumulate on your plumbing fixtures. Eventually the hard water can erode them badly enough that you must replace them. Save your hardware with a water softener.
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