San Francisco s Onsite Water Systems. Paula Kehoe Director of Water Resources San Francisco Public Utilities Commission February 25, 2015

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1 San Francisco s Onsite Water Systems Paula Kehoe Director of Water Resources San Francisco Public Utilities Commission February 25, 2015

2 San Francisco Public Utilities Commission Services

3 SFPUC Regional Water System

4 Responding to Aging & Vulnerable Water Infrastructure Water System Improvement Program (WSIP) Repair, replace, and seismically upgrade infrastructure $4.8 billion 80% Complete

5 Reduce Demands & Develop New Local Water Supplies Conservation: Reduce customer demands Groundwater: pump water for potable purposes during normal and drought years Recycled Water: produce recycled water for irrigation and toilet flushing

6 Buildings Produce Water Wastewater from toilets, dishwashers, kitchen sinks, and utility sinks Precipitation collected from roofs and abovegrade surfaces Wastewater from clothes washers, bathtubs, showers, and bathroom sinks Precipitation collected at or below grade Nuisance groundwater from dewatering operations

7 Onsite Water Systems Worldwide

8 Re-think Building Design & Re-imagine How Water is Used

9 SFPUC Incorporates Onsite Water Systems

10 Integrating Onsite Water Systems is Challenging Regulatory questions: Who should set water quality standards? Who should issue permits and provide operational oversight? What type of on-going monitoring and reporting should be implemented?

11 2012 Uniform Plumbing Code Updates California Adoption Expanded onsite graywater standards Included onsite rainwater standards Provides construction requirements

12 Need for Oversight on the Local Level

13 City Ordinance Streamlines Permitting Process SFPUC SFDPH SFDBI Program Administration Public Health Construction Review onsite non-potable water supplies & demands Administer citywide project tracking & annual potable offset achieved Provide technical support & outreach to developers Provide financial incentives to developers Issue water quality & monitoring requirements Review and approve nonpotable engineering report Issue permit to operate onsite systems Review water quality reporting Conduct Plumbing Plan check and issue Plumbing Permit Inspect and approve system installations

14 System Construction Municipal recycled water/potable water as makeup/backup Same backflow protection requirements as potable Recycled or potable water supplied by SFPUC ONSITE TREATED NON-POTABLE WATER

15 System Construction Purple pipe for treated non-potable water Pipe labeling and signage will identify type Onsite Treated Non-potable, Recycled Water, etc. Consistent with 2013 California Plumbing Code CAUTION: ONSITE TREATED NON-POTABLE WATER USED FOR IRRIGATION

16 Water Quality Criteria Consistent with State Codes Alternate Water Source Regulation Blackwater Title 22 Graywater Rainwater Stormwater Foundation Drainage California Plumbing Code - NSF-350 California Plumbing Code - Table No state codes - SFDPH established SFDPH will permit onsite systems and require monitoring and reporting

17 Monitoring and Reporting Frequency Rainwater Stormwater Foundation Drainage Graywater Blackwater Start-Up Mode (90 days) Temporary Use Mode (9 months) Final Use Mode Less Rigorous/ Frequent More Rigorous/ Frequent

18 Technical & Financial Assistance

19 Water Use Calculator

20 PG&E Office Building Retrofit Source: Foundation Drainage End Uses: Toilet & Urinal Flushing Status: In Operation

21 Exploratorium Source: Rainwater & Bay Water End Uses: Toilet and Urinal Flushing & Heating and Cooling System Status: In Operation

22 St. Anthony s Building Source: Rainwater End Use: Toilet & Urinal Flushing Status: In Operation

23 Pier 27 Source: Rainwater End Uses: Toilet & Urinal Flushing and Irrigation Status: In Operation

24 Transbay Transit Center Sources: Rainwater & Graywater End Uses: Toilet & Urinal Flushing and Irrigation Status: Final design

25 San Francisco Public Safety Building Sources: Rainwater, Stormwater, & Graywater End Uses: Toilet & Urinal Flushing and Irrigation Status: Under Construction

26 181 Fremont Mixed Use Development Source: Graywater End Use: Toilets & Irrigation Status: Under Construction

27 Moscone Convention Center Expansion Source: Foundation Drainage End Uses: Toilet and Urinal Flushing, Irrigation & Street Sweeping Status: Design

28 NRG Steam Loop Source: Foundation Drainage End Use: Steam Heating Loop Status: Pre-design

29 San Francisco Project Profiles

30 San Francisco Project Profiles

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32 Nationwide Representation

33 Participants Across All Water Sectors Municipal Water Agencies Public Health Officials Research Agencies

34

35 10 Steps for Developing a Local Program

36 Multi-State Public Health Collaborative

37 THANK YOU! sfwater.org/np sfwater.org/np/iuws