WAC 246-291-200   Design standards.  (1) Water system owners shall ensure that good engineering practices are used in the design of all public water systems. Information on what is good engineering practice is available from the department in the guideline titled Group B Water System Approval.

     (2) In addition, owners of new or expanding public water systems shall ensure the following factors are addressed:

     (a) Local conditions, plans and/or regulations;

     (b) Public Water System Coordination Act considerations where appropriate; and

     (c) Other requirements as determined by the department.

     (3) Any pipe, pipe fittings, solder, or flux used in the installation or repair of a public water system shall be lead-free. Within the context of this section, lead-free shall mean having no more than eight percent lead in pipes and pipe fittings, and no more than two-tenths of one percent lead in solder and flux. This prohibition shall not apply to leaded joints necessary for the repair of cast iron pipes.



[Statutory Authority: RCW 43.20.050. 94-14-002, § 246-291-200, filed 6/22/94, effective 7/23/94.]