EFFECT:   

Clarifies the requirement that the rules adopted by the Department of Health for the on-site treatment and reuse of nonpotable alternative water sources must address any conflict between the rules and the Department of Ecology's stormwater permit and guidance manuals on stormwater.

Clarifies the requirement that calculations made by property owners or permit holders to address runoff from impervious surfaces must reduce the amount of rainwater that is considered stormwater by the amount of rainwater that is treated and reused onsite in conformance with the rules established.