UWM Plan - Municipal Water District of Orange County

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Section 6 Recycled Water Table 6-1: Wastewater Collection and Treatment (AFY) Type of Wastewater Wastewater Collected & Treated in Service Area Volume that Meets Recycled Water Standards Fiscal Year Ending 2005 2010 2015 2020 2025 2030 2035 344,045 313,107 393,351 411,771 424,232 433,426 438,321 41,860 111,653 35.7% 149,168 155,431 163,414 163,820 164,071 37.4% Table 6-2: Disposal of Wastewater (Non-Recycled) (AFY) Method of Disposal Treatment Level Fiscal Year Ending 2010 2015 2020 2025 2030 2035 Ocean Outfall Secondary/Tertiary 201,454 244,183 256,340 260,818 269,606 274,250 6.2.2. Orange County Sanitation District Orange County Sanitation District (OCSD) collects wastewater from residential, commercial, and industrial customers in 21 cities, three special districts, and portions of unincorporated Orange County, totaling 471 square miles serving approximately 2.4 million residents. Its wastewater system is the third largest west of the Mississippi River. OCSD treats an average daily flow of 264 MGD or approximately 266,472 AFY. These flows include dry weather urban runoff collected from 15 diversion points and discharged into the sewer system for treatment and Santa Ana Regional Interceptor (SARI) flows from the upper Santa Ana watershed. During the dry weather period, May through September, diverted flows range between 0.7 to 2.6 MGD. During wet months, diverted flows range from 0.4 to 1.4 MGD. OCSD operates and maintains two treatment plants: Reclamation Plant No. 1, located in Fountain Valley with a capacity of 218 MGD, and Treatment Plant No. 2 located in Huntington Beach with a capacity of 168 MGD. OCSD also operates 650 miles of collection system, with pipelines ranging in size from 6 to 96 inches in diameter along with 20 pump stations. The treated wastewater is discharged to the Pacific Ocean via an ocean outfall in strict and consistent compliance with state and federal requirements as set forth in OCSD's National Pollutant Discharge Elimination System permit, while approximately 10 MGD is reclaimed at facilities operated by the OCWD. OCSD’s outfall is 120 inches in diameter and extends four miles into the ocean with an additional one mile long diffuser. Its high tide hydraulic capacity is 480 MGD. A 78-inch-diameter outfall extending one mile offshore is available for emergency situations. Two additional Municipal Water District of Orange County 2010 Regional Urban Water Management Plan Final 6-2
Section 6 Recycled Water outfalls are located at the Santa Ana River for use in extreme emergency overflow conditions only. Biosolids are 100% land applied as an agricultural soil amendment, while grit and screenings are transported under contract for landfill disposal. OCSD Reclamation Plant No. 1 - Reclamation Plant No. 1 treats raw wastewater conveyed from six major sewer lines. On average the plant treats approximately 120 MGD of wastewater. The maximum treatment capacity is 218 MGD. The plant provides advanced primary and secondary treatment and supplies secondary treated water to OCWD for further treatment to recycled water standards and distribution. This is the only OCSD treatment plant that provides water to OCWD for reclamation. An interplant pipeline allows flows to be conveyed to Treatment Plant No. 2. Management of interplant flows allows for minimum flow requirements for reclamation facilities to be met during off-peak hours. OCSD Treatment Plant No. 2 - Treatment Plant No. 2 provides a mix of advanced primary and secondary treatment. Influent is received via five major sewers and Reclamation Plant No. 1. The average dry weather treatment flow rate is 144 MGD. The maximum treatment capacity is 168 MGD. All treated wastewater is discharged to the ocean through the ocean outfall. 6.2.3. South Orange County Wastewater Authority South Orange County Wastewater Authority (SOCWA) is a Joint Powers Authority created on July 1, 2001. It was formed as the legal successor to three agencies: Aliso Water Management Agency, South East Regional Reclamation Authority, and South Orange County Reclamation Authority. SOCWA Member agencies include: City of Laguna Beach, City of San Clemente, City of San Juan Capistrano, El Toro Water District, Emerald Bay Service District, Irvine Ranch Water District, Moulton Niguel Water District, Santa Margarita Water District, South Coast Water District, and Trabuco Canyon Water District. All of these service areas receive wholesale water through MWDOC. The service area encompasses approximately 220 square miles including the Aliso Creek, Laguna Canyon, and San Juan Creek Watersheds. Within its service area, SOCWA operates four wastewater treatment plants, an additional eight wastewater treatment plants are operated by SOCWA member agencies. Wastewater in the service area is collected at the local and regional level through a series of interceptors that convey influent to the wastewater treatment plants. Treated effluent throughout the service area is conveyed to two gravity flow ocean outfalls, Aliso Creek Outfall and San Juan Creek Outfall, operated by SOCWA. These outfalls have a gravity flow capacity of 50 MGD and 24 MGD (80 MGD pumped), respectively. Aliso Creek outfall extends approximately 7,900 feet offshore near Aliso Creek. San Juan Creek Municipal Water District of Orange County 2010 Regional Urban Water Management Plan Final 6-3
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Municipal Water District of Orange
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Table of Contents Contents Executiv
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Table of Contents 6. Recycled Water
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Table of Contents List of Figures F
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Acronyms GAC GAP GMFP GPCD gpm GRF
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Message from the Board of Directors
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Executive Summary • Offer opportu
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Executive Summary When comparing su
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Executive Summary • Promoting par
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1. Introduction 1.1. Urban Water Ma
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Section 1 Introduction • Long-ran
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Section 1 Introduction term by vote
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Section 1 Introduction For more tha
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Section 1 Introduction Orange Count
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Section 2 Water Demand 600,000 2.5
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Section 2 Water Demand Table 2-1: C
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Section 2 Water Demand used to fill
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Section 2 Water Demand Baseline and
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Section 2 Water Demand o 10 percent
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Section 2 Water Demand These target
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Section 2 Water Demand under SBx7-7
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Section 2 Water Demand Legislation
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3. Water Sources and Supply Reliabi
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Section 3 Water Sources and Supply
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3.2.3. State Water Project (SWP) Se
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State Water Project Programs and Lo
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3.3.2. San Juan Basin Section 3 Wat
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Page 143 and 144: Section 7 Future Water Supply Proje
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Page 153 and 154: Section 8 UWMP Adoption Process Cit
Page 155 and 156: Appendices A. Urban Water Managemen
Page 157 and 158: CALIFORNIA WATER CODE DIVISION 6 PA
Page 159 and 160: and county, city, regional agency,
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Page 165 and 166: the agencies participating in the p
Page 167 and 168: service area at the end of 5, 10, 1
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Page 171 and 172: "Memorandum of Understanding Regard
Page 173 and 174: Demand “Bump” Factors for 2010
Page 175 and 176: Table 1. Per-Capita Retail Water Us
Page 177 and 178: Appendix C California Urban Water C
Page 179 and 180: Agency: Municipal Water District of
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Agency: Municipal Water District of
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Agency: Municipal Water District of
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Urban Water Management Plan checkli
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Calif. Water No. UWMP requirement a
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Municipal Water District of Orange
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List of Tables and Figures TABLES T
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Section 2: Metropolitan Water Distr
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Section 3: Development Process In p
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MWDOC’s allocation plan. Moreover
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Base Period Interim Agricultural Wa
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Shortage Levels: The model allocate
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to 2008; in order to incorporate th
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Section 5: Plan Implementation This
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agencies and Board Committee member
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Tracking and Reporting In preparing
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It important to note, MWDOC does no
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Appendix A List of Acronyms: AF- Ac
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Appendix C MWDOC Growth Adjustment
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Appendix F Letters of Notification
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Appendix H Resolution of Adoption o
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8001 Irvine Center Drive, Suite 110
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UWM Plan - Municipal Water District of Orange County

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