1. Wastewater Reuse Expansion in Austin Ryan Grosskopf

2. 2009 5.2 MGD Avg potable water production of 142 MGD Summer residential landscape use: ~25% 2034 15 MGD Avg water production ??? Primary Uses Cooling water Golf courses Landscape irrigation Austin Wastewater Reuse

3. Centralized Austin Reuse

4. Problem?

5. Possible Solution: MBRs and Decentralized Reuse http://www.eflo.com/pdfs/eflo-mbr.pdf 250 m 3 /day or about 66,000 gpd Small Footprint Low maintenance Sewer mining $7-20 / gallon capacity

6. Where? Determine Treatment Plant and Use Locations City of Austin 2008 Land Use Dataset 2010 Wastewater and Reuse Network Data USGS 1/3’ DEM

7. Current Infrastructure Limitations: 51 st Street Tower http://www.austinchronicle.com/

8. Which Neighborhood for Service? Land Use Irrigated Area Single Family40% Duplexes30% Apartment/Condo0% Commercial0% Office0% Government Services0% Educational20% Meeting and Assembly0% Cemetaries75% Parks/Greenbelts20% Undeveloped0% 2009 annual average:.042 inches/day Accuwater Evapotranspiration Index.025-.300 MGD Package MBR plant capacity ~70 feet of head required for irrigation sprinklers Elevation Evaluation by hand…. TEDIOUS!

9. Selected Neighborhood Land Use by Area: ~95% of property area likely has some irrigation

10. Plant Location Distance from > 24” wastewater main Elevation gain from neighborhood Property type and size

11. Jackpot!