Section 246-291-280 - Existing Group B systems(1) A purveyor of a Group B system shall apply for and obtain design approval under WAC 246-291-120, or approval under subsection (3) of this section before the system: (a) Expands to serve a new service connection needing potable water; or(b) Provides potable water for a new use of an existing service connection if a local permitting authority requires an approved public water supply as a condition of an approval of the new use.(2) A local permitting authority may determine a Group B system constructed before January 1, 2014, without design approval under this chapter, to be adequate for existing connections if, at a minimum, the following requirements are met: (a) The system's source(s) must meet well construction standards, under chapter 173-160 WAC;(b) A well site inspection completed by the department, local health jurisdiction, or designee has documented that there are no sources of contamination in the SCA that could create a public health risk;(c) The system meets water quality standards under WAC 246-291-170, Table 2; and(d) The system is capable of maintaining a minimum 20 psi at all points throughout the distribution system during peak demand.(3) A purveyor of a Group B system approved prior to January 1, 2014, may provide potable water to additional service connections provided that: (a) The expanded use is consistent with the existing design approval;(b) The expanded use does not exceed the number of approved service connections; and(c) The purveyor complies with all locally adopted requirements.Wash. Admin. Code § 246-291-280
Statutory Authority: RCW 43.20.050 and chapter 70.119A RCW. 12-24-070, § 246-291-280, filed 12/4/12, effective 1/1/14.