"Spam Collector" wrote in message
...
On 2007-06-29, BoyPete wrote:

Just why would tap water be saline? It's 'fresh' water.

It wouldn't be as salty as seawater, but there are areas along
coastlines (usually not the rocky ones) and places inland (such
as a large area of West Texas) where well water is naturally salty..

Frank

Exactly. Just because it is "fresh water" doesn't mean that it doesn't
have dissolved solids and chlorides. In the U.S., the national secondary
drinking water regulations allows up to 500 mg/l of total dissolved solids
in drinking water, and up to 250 mg/l of chloride. If your drinking water
contains chlorides AND TDSs close to the allowable limit, you will have a
relatively high salinity (as freshwater goes), and that can affect your Ph.
That was the reason I asked the question.

George