1. A Game Plan for Aging Water Infrastructure;Baird;Jour. AWWA,2010
2. CBO (Congressional Budget Office) 2002 Future Investment in Drinking Water and Wastewater Infrastructure, Appendix C www.cbo.gov/doc.cfm?index=3983
3. Black Veatch 2010 2009/2010 50 Largest Cities Water/Wastewater Rate Survey www.bv.com/top50ratesurvey
4. Clumpner , G. 2010 Personal communication
5. EFAB (Environmental Financial Advisory Board) 2006 Affordable Rate Design for Households www.epa.gov/efinpage/Affordability_Rate_Design_report.pdf