[Code of Federal Regulations] [Title 21, Volume 4] [Revised as of April 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR211.48] [Page 143] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 211_CURRENT GOOD MANUFACTURING PRACTICE FOR FINISHED PHARMACEUTICALS--Table of Contents Subpart C_Buildings and Facilities Sec. 211.48 Plumbing. (a) Potable water shall be supplied under continuous positive pressure in a plumbing system free of defects that could contribute contamination to any drug product. Potable water shall meet the standards prescribed in the Environmental Protection Agency's Primary Drinking Water Regulations set forth in 40 CFR part 141. Water not meeting such standards shall not be permitted in the potable water system. (b) Drains shall be of adequate size and, where connected directly to a sewer, shall be provided with an air break or other mechanical device to prevent back-siphonage. [43 FR 45077, Sept. 29, 1978, as amended at 48 FR 11426, Mar. 18, 1983] Effective Date Note: At 72 FR 68068, Dec. 4, 2007, Sec. 211.48 was amended by revising paragraph (a), effective Apr. 17, 2008. For the convenience of the user, the revised text is set forth as follows: TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 211_CURRENT GOOD MANUFACTURING PRACTICE FOR FINISHED PHARMACEUTICALS--Table of Contents Subpart C_Buildings and Facilities Sec. 211.48 Plumbing. (a) Water supplied by the plumbing system of the facility must be safe for human consumption. This water shall be supplied under continuous positive pressure in a plumbing system free of defects that could contribute contamination to any drug product. * * * * *