Water Systems for Pharmaceutical Facilities 593 4.0 POTABLE WATER Potable water, also called drinking or tap water, is used for sanitary purposes such as drinking fountains, showers, toilets, hand-wash basins cooking, etc. If the water supply to the facility is from a public system such as city water, the maximum contaminant levels, are set by the Environmental Protection Agency(EPA)Standards, Title 40 CFR, Part 141. Table 3 is a highlight of a typical water supply standard. Primary drinking water regulations, Appendix I outlines the existing and proposed U. S.EPA drinking water maximum contaminant levels Table 3: Minimum Potable Water Standard Appearance chloride 250 ppm Sulfate 250 ppm 0.05 mg/L Fecal Coliforms 1/100 ml(Proposed: 0/100 ml) Other Microbes Total Dissolved Solids Chromium Hexavalent 0.05mg 0.7mg 0.2mg Mercury 0.002mgL 00l1 Chlordane 0.003mg Endrin 0.0002mgL 0.0001mg/L Heptachlor Epoxide 0.000mg/L 0.004mgn 0. 1 mg/L 2,4,5-TP(Si 0.01mg Specific 10,000 ohms/cm(typically) H 6.5-8.5Water Systems for Pharmaceutical Facilities 593 4.0 POTABLE WATER Potable water, also called drinking or tap water, is used for sanitary purposes such as drinking fountains, showers, toilets, hand-wash basins, cooking, etc. If the water supply to the facility is from a public system such as city water, the maximum contaminant levels, are set by the Environmental Protection Agency (EPA) Standards, Title 40 CFR, Part 141. Table 3 is a highlight of a typical water supply standard. Primary drinking water regulations, Appendix I outlines the existing and proposed U. S. EPA drinking water maximum contaminant levels. Table 3: Minimum Potable Water Standard Item Specification Appearance 1 Turbidity Unit Chloride 250 ppm Fluoride 1.4 to 2.4 mg/L Sulfate 250 ppm Lead 0.05 mg/ L Fecal Coliforms Pyrogens Not Specified Other Microbes Not Specified Total Dissolved Solids 500 mg/L Arsenic 0.05 mg/L Barium 1.0 mg/L Cadmium 0.010 mg/L Chromium Hexavalent 0.05 mg/L Chloroform 0.7 mg/L Cyanide 0.2 mgL Mercury 0.002 mg/L Nitrate 10 mg5 Selenium 0.01 mg/L Silver 0.05 mg/L Pesticides 1/100 ml (Proposed: Oh00 ml) Chlorodane 0.003 mg/L Endrin 0.0002 mg/L Heptachlor 0.0001 mg/L Heptachlor Epoxide 0,0001 mg/L Lindane 0.004 mg/L Methoxychlor 0.1 mg/L Toxaphene 0.005 mg/L 2,4-D 0.1 rngL 2,4,5-TP (Silvex) 0.01 mg/L Specific Resistance 10,000 ohmdcm (typically) PH 6.5-8.5