The Brightwater Wastewater Treatment Center says on Facebook it has a full catering kitchen, audio-video equipment, dance floor and ample parking.
You could even hold the wedding outside.
The director of the Brightwater Environmental Education and Community Center, Susan Tallarico, tells a local television station that receptions would take place just steps away from where raw sewage is processed. She says there's no odor because all the processing is contained.
The King County plant was finished three years ago but has been available for rent for about seven months.
It costs $2,000 to rent the center for eight hours. One couple has already booked the sewage plant for their nuptials.