[hotrod]

The answer to your question depends on your local water quality.

The ideal would be to use distilled water. That would ensure that your nozzles would not develop mineral deposits and clog up over time.

To some extent it also depends on what size jets your running and how often you intend to clean the nozzles. It would also depend somewhat on how much water your system used.

If your tapwater contains a lot of minerals ( so called hard water ) then you should probably use a distilled or de-mineralized water. This would for example be the case if you have problems with water spotting on glassware and mineral deposit build up in cooking pans.

If you have soft water that does not leave noticable mineral deposits when it dries, and your willing to occasionally check your spray nozzles for mineral build up, you can probably run straight tap water, or a mix of straight tap water, and distilled or de-mineralized water.

Even with fairly hard water in a pinch you could use it to top off the system as long as you did not run it all the time.

Larry