We have received a variance approval from the City-County Health Department for our experimental greywater system. Our greywater system will divert water from the water fountain, shower and sinks through a special filtering system and use the cleaned water for irrigating our landscape plants in the summer months. All of the irrigation system emitters are underground (no sprayers, etc) which virtually eliminates evaporation and puts the water right at the plant that needs it.
Because using greywater has not been done in a commercial project in Missoula and there are no specific rules yet, we needed to get the OK. We will be tracking and measuring the effectiveness of this system and using our experiences with it to help provide data for future policy-making discussions.