|You should not wait until the situation is like in the picture!||Most of the holes are blocked or narrowed - from the remaining holes the water comes out in thin jets. Think yourself about the hygienic problems.|
It is very easy to solve the problem:
|Unscrew the spray head! Then you may easily press out the rubber grommet.||You are a chemist and therefore you know, that lime may be dissolved by a diluted solution of citric acid. You know that hydrochloric acid also works, but you will not do so, because then also the red varnish will flake off. If escaping of bubbles stops rinse with water and reassemble.|
A strong and often recurring calcification may be an indicator, that the valve does not completely stop the water flow.