1. AZSOS, 2016. Arizona Secretary of State – Arizona Administrative Code under Title 18 Environmental Quality – Chapter 11 Water Quality Standards (online). Available from 〈https://apps.azsos.gov/public_services/Title_18/18-11.pdf〉. (Accessed 30 July 2018).
2. Bastian, R. and Dan Murray. 2012 Guidelines for Water Reuse. US EPA Office of Research and Development, Washington, DC, EPA/600/R-12/618, 2012.
3. Brown and Caldwell, 2012. North Shore Regional Wastewater Alternatives Plan. Appendix A: Review of Wastewater Facility Regulations, Standards, and Guidelines. (online). Available from 〈https://www.honolulu.gov/rep/site/env/wwm_docs/wwm_NSRWWAPFinalReportAppendices.20120103.pdf〉. (Accessed 5 November 2018).
4. Swimming-associated illness and recreational water quality criteria;Cabelli;Water Sci. Technol.,1989
5. CWQCC, 2013. Colorado Water Quality Control Commission, Regulation No. 84 – Reclaimed Water Control Regulation 5 CCR 1002-84 (online). Available from 〈http://www.sos.state.co.us/CCR/GenerateRulePdf.do?RuleVersionId=5296&fileName=5%20CCR%201002-84〉. (Accessed 30 July 2018).