Most paper manufactures obtain their water from nearby
rivers. Obviously, whatever foreign matter is contained in the
water can wind up in their paper. Our mill's water supply is from
an artesian well that originates from a limestone water table 800 feet
below the earth's surface. For the 60 years they have tested
their water, it has never varied in these astonishing characteristics:
pH 7.2 - 7.6, no iron or copper traces, and a high concentration of
calcium. Alum is never used in the manufacturing process.