The Oregon Parks and Recreation Department tested for ammonia odor at six state parks as part of its assessment of waterfree urinals for state park restrooms. The testing revealed that there was “barely detectable or no detectable ammonia in the non-water using urinals.”

The tests were part of the Oregon Parks and Recreation Department's sustainability initiative, an effort to reduce water consumption and alleviate the often heavy effluent loading on wastewater treatment systems, such as drain fields.

Falcon Waterfree Technologies, which offers waterfree urinals, has posted the testing report on potential ammonia odors near waterfree urinals on its Web site at