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Re: The changing PH of tap water?

Subject: Re: The changing PH of tap water?
by EagleC on 17/6/2010 15:52:58

No, but yes, perhaps.

Tap water contains dissolved gasses and temporary buffers to ensure that it's close to a nice tasty PH 7 for us humans to drink when we put it into a glass. If you leave the water standing these temporary buffers degrade, disperse or otherwise leave the water and the ph returns to its more natural and stable PH.

This could mean the PH goes up or down, it depends on the chemical composition of the water.