Any existing backflow prevention device shall be allowed to continue in service unless:
- (a) The supplier of water considers the condition of any portion of the backflow prevention device to be such that replacement should be made; or
- (b) The degree of hazard classification has changed so as to supersede the effectiveness of the present backflow prevention device currently in use.
Source. (See Revision Note at part heading for Env-Dw 505) #10615, eff 6-1-14; ss by #14120, eff 11-23-24, EXPIRES: 11-23-34