High Purity Semiconductor-Manufacturing Water compared to tap water

WATER SPECIFICATION TAP WATER HIGH PURITY WATER
Resistivity (megohm-cm) 0.0002 15-18
Electrolites (parts per billion) 200,000 <25
Particulate content (No./mL) 100,000 <150
Living organism (No./mL) 100-10,000 <10

In the production of semiconductors, 99.9 % of organisms found in tap water must be removed. This means that for every liter of tap water consumed in semiconductor processing, there are 10,000,000 microorganisms being ingested.

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2007 Arizona Board of Regents for The University of Arizona