The Guam EPA may promulgate separate regulations for monitoring and other requirements specifically for rainwater catchment systems. For the purpose of this Chapter, a rainwater catchment system is classified as a surface water system unless it meets requirements as may be specified by Guam EPA by regulation to allow classification as a groundwater system.
Rainwater Catchment Systems
10 GCA § 53110 — under Guam Safe Drinking Water Act.
10 GCA § 53110