Service lines: Plastic.

(a)Each plastic service line outside a building must be installed below ground level, except that—#

(1)It may be installed in accordance with § 192.321(g); and#

(2)It may terminate above ground level and outside the building, if—#

(i)The above ground level part of the plastic service line is protected against deterioration and external damage;#

(ii)The plastic service line is not used to support external loads; and#

(iii)The riser portion of the service line meets the design requirements of § 192.204.#

(b)Each plastic service line inside a building must be protected against external damage.#