What is the consequence of using tap water that is very hard for endoscope cleaning?

Using very hard tap water for endoscope cleaning can lead to a variety of issues that affect the cleaning process. Specifically, it tends to contain high levels of minerals, particularly calcium and magnesium, which can interfere with the cleaning efficacy of detergents. When hard water is used, the minerals can bind with the surfactants in the detergent, reducing their effectiveness. As a result, more detergent may be necessary to achieve the same level of cleaning when using hard water compared to using softer water.

Additionally, the presence of these minerals in hard water can lead to the formation of mineral deposits or scale on the endoscope and cleaning equipment over time, further complicating the cleaning process. Therefore, increased detergent use is a practical consequence of using hard tap water, as the standard amount may not suffice to overcome the effects of water hardness.