1. Local and State Regulation of Non-Potable Onsite Water Reuse Peter Haase,CEO/CTO

2. Distributed Onsite Recycling Within a centralized sewer service but does not provide recycled water Typically with in city/town jurisdiction Regulatory oversight – City, County and/State Decentralized Onsite Recycling Outside of the service area of a centralized sewer system unincorporated area with Regulatory oversight – County and/or State Onsite Recycled Water Settings

3. Regulatory Implications on Design and Selection of Technology Minimize risks: – System redundancy and back up equipment – Real-time monitoring and alarm capacity – local and remote – SCADA/Telemetry – Simplicity in design to reduce human error Design for reliable operation and maintenance: – Accessibility – Visibility Select technology based on real performance data (in absentia set up pilot test to demonstrate proof of concept)

4. Critical Control Point Monitoring Water Quality Monitoring: – Inline Real-time monitoring for key and surrogate parameters (turbidity, disinfectant (chlorine, ozone, UV light emittance), pH, ORP, TOC, DO, TDS/EC) – O + C – Bacteria testing (Colilert (in-house) or Certified Lab) – O + C – BOD, TSS, FOGS, Nitrogen Species (Certified Lab) – O + C System Monitoring: – Pump/blower run time, events and amperage - O – Float switches or level sensors - O – Actuated valve position - O – Flow rate and totalizer – O + C *Operational + Compliance (O + C); Operational (O)

5. Operation and Maintenance Requirements System Operator: – County: Service Provider – State: Certified Wastewater Operator (Grade I – III typical) Routine Inspection and Maintenance - frequency dependent: – Source water (groundwater – blackwater) – Technology Selected and Complexity – Level of reuse (landscape versus interior building reuse) – Residuals Management Water Quality Testing – type and frequency dependent on: – Daily - inline analyzers – Weekly/Monthly/Quarterly – Certified Lab Reporting - Frequency Dependent on: – Technology selected – Perceived Risk – Confidence in Discharger or Operator – Monthly – High; Quarterly – Average; Annually - Low

6. Six County Overview San Francisco, San Mateo, Santa Clara, San Benito, Monterey, Santa Cruz