(1) A purveyor that is a municipal corporation is not liable for any damages that arise out of a fire event and relate to the operation, maintenance, and provision of fire suppression water facilities and services that are located within or outside its corporate boundaries.

(2) A purveyor that is not a municipal corporation is not liable for any damages that arise out of a fire event and relate to the operation, maintenance, and provision of fire suppression water facilities and services if the purveyor has a description of fire hydrant maintenance measures. The description of fire hydrant maintenance measures must be kept on file by the water purveyor and be available to the public, and may be included within the purveyor's most recently approved water system plan or small water system management program.

(3) Consistent with RCW 36.55.060, with respect to counties and notwithstanding the provisions of subsections (1) and (2) of this section, agreements or franchises may, as the parties mutually agree, include indemnification, hold harmless, or other risk management provisions under which purveyors indemnify and hold harmless cities, towns, and counties against damages arising from fire suppression activities during fire events. Such provisions are unaffected by subsections (1) and (2) of this section.