Use of unanalysed well water is more dangerous for human health than it is for the faucets. Please make sure to have your well water analysed before using it. Due to lack of sufficient pressure, combi boiler or water heater may not operate, which, in turn, may cut hot water supply. What’s more, particles that come from well may damage the on/off system. Since well water is harder and more corrosive compared to tap water, it may cause corrosion inside the product, which is impossible to see from outside.