We are doing annual warranty maintenance on whole house softener and reverse osmosis drinking water systems on municipal water. Testing the water to make sure units are working at their optimum. Everything tested perfect. Water is soft, reverse osmosis is providing purified water. Servicing the units and changing the filters for continued success and longevity of the units. Some iron on the injector. Even on municipal water, iron is present because of the municipality infrastructure. 🐳💦