You have to experiment: For a long time now I've been as sparing as I could with the water, believing I would run out if I had a higher flow rate.
Recently I've cut down on my work volume (getting too old
) so as I only have to do about half the work I used to, I reckoned I could afford to turn up the flow without risking running out.
SURPRISE: There was no difference in consumption :
Higher flow rate was compensated by quicker working, so same quantity of water used.
BIG BONUS: High flow rate puts more water on the glass so more effective cleaning and especially rinsing. A good quick scrub followed by a thorough flushing for a much shorter time seems to give better results.
Why didn't I work that out months ago? :