Water quality of collected samples is tested at two laboratories: a state certified drinking water laboratory and a university laboratory. To date, samples of treated rainwater collected from the NNH meet EPA regulated, secondary regulated, and non-regulated drinking water standards. The rainwater treatment system provides an average of 800 gallons of treated rainwater every month for use in the home and exterior faucets. 100% of overflow rainwater is infiltrated in four terraced rain gardens.