Proposed Revisions to Californias 2020 and 2030 Municipal Wastewater - - PowerPoint PPT Presentation

Proposed Revisions to California’s 2020 and 2030 Municipal Wastewater Recycling Goals*

Richard Mills, P.E. Tonianne Pezzetti, PG, CHG

• H. Michael Ross, P.E.

Department of Water Resources Sacramento, CA *Originally Presented at California WateReuse, March 2013

Cliff Notes Version

Propose new statewide targets, or review and update existing statewide targets for: Recycled water Brackish groundwater desalination Infiltration and direct use of urban stormwater runoff

Targets for other water sources can be proposed

DWR is Required by SBx7‐7 to:

California is Steadily Increasing its Use of Municipal Recycled Water

A Brief History of Recycling Goals in CA

1970 1980 1990 2000 2010

1970 – First quantitative statewide survey completed. 175 TAF Goals established and incorporated into the Water Code (§ 13577): 700 TAF by 2000 and 1,000 TAF by 2010. 1991 – Recycled Water Task Force determined projected potential use of 890‐1,170 TAF by 2010 and 1,850‐2,250 TAF by 2030. 2003 – Recycled Water Policy (State Water Board) establishes goals of increasing recycled water use over 2002 levels by 1 MAF in 2020 and 2 MAF in 2030. It also mandates increasing recycled water use over 2009 levels by 200,000 AF in 2020 and an additional 300,000 AF in 2030. 2009 – Office of Recycling established. First Target: 400 TAF increase in 5 years. 1977 – 1987 – Comprehensive statewide survey

2020

Our Task: Review, Update, or Propose New Targets

584,000 700,000 1,000,000 890 ‐ 1,170,000 1,850 ‐ 2,250,000 1,525,000 2,525,000 869,000 1,169,000

Focus on 2020 and 2030

Recycled Water Policy Goal Mandate Previous goals Recycled Water Task Force Potential

DWR is to Look at Existing Targets

Goal: Mandate: Projection: 1982, 2000, 2010, 2015, RW Policy RW Policy Recycled Water Task Force Target: SBx7‐7

Approach

2010 UWMPs 2009 Municipal Recycled Water Survey

Approach

 Step 1: Assess use of intended targets  Step 2: Review UWMP data for overlap and use issues  Step 3: Merge UWMP and Survey data sets  Step 4: Assess projections

Results

How Do These Estimates Compare?

1,525,000 2,525,000 869,000 1,169,000 Recycled Water Policy Goal Mandate

1M 1.3M

DWR’s Proposal:

 Based on current recycled water use and projected recycling rates included in 2010 UWMPs, California:

– Probably will meet the Recycled Water Policy mandates of 869 TAF (2020) and 1,269 TAF (2030) – Will be challenged to achieve the RWP goals of 1,525 (2020) and 2,525 MAF (2030)

 Achievable targets of 1 MAF (2020) and 1.3 MAF (2030) are slightly higher than current mandates  Meeting existing mandates and new targets will be strongly tied to funding availability.