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CCCSD-Concord Recycled Water Project

Project URL link
Sponsoring Agency Central Contra Costa Sanitary District
Subregions ('East Bay',)
Counties Contra Costa County
Watershed Tributary Suisun Bay Watershed, Walnut Creek Watershed
Public or private land? ('Public', 'Private')
Location (lat/lon) 37.974819456907035, -122.05862045288086
Start Date 01/01/2013-Estimated Construction start date
End Date 12/01/2013
Location Description See figure. The project is located in Concord. The project area is a triangle shape, framed by Hwy 680, Concord Avenue and Walnut Creek (the creek not the city.) The recycled water distribution system begins from the Buchanan Fields Golf Course (an existing recycled water customer), then down Meridian Park Blvd, branch off to Burnett, Galaxy Way, Diamond Blvd and John Glen Drive.
CCCSD-Concord Recycled Water Project

Construct approximately 2.5 miles of recycled water pipeline in the City of Concord. New customers will use recycled water to irrigate turf in local businesses, office parks, and street medians.

Central Contra Costa Sanitary District (CCCSD) will expand its recycled water distribution system by constructing approximately 2.5 miles of pipeline in the City of Concord.  Up to 34  new customers will use recycled water for landscape irrigation. The project will reduce customer potable water use by approximately 190 acre-feet per year; potable water originates from the Sacramento/San Joaquin Delta.

Drinking Water Supply
Water Quality Improvement
Water Reuse/Recycling
Stormwater Improvements
Groundwater Benefits
Habitat Protection and Restoration
Flood Protection
This is a water recycling project that will provide the distribution system required to make available filtered and disinfected effluent from CCCSD's Water Reclamation facility for landscape irrigation in Concord. It is an extension of the CCCSD existing Zone 1 project. This project provides water quality improvements to the Suisun Bay because effluent diverted to irrigation reduces CCCSD discharge volume, which reduces pollutant loading into Suisun Bay. This project reduces freshwater diversions from the Sacramento Delta, thereby improving water quality. The project area is located within a disadvantaged community.
The project reduces potable water demand for irrigation during summer months.
Not at this time.
City of Concord and Contra Costa Water District (CCWD)
Maybe. CCCSD will evaluate providing financial assistance on a case by case basis.

Part 2 - Detail

The Central Contra Costa Sanitary District (CCCSD) Concord Recycled Water Project will expand its recycled water distribution system to provide recycled water to irrigation users in the City of Concord (east of the I-680 freeway and south of Buchanan Fields Airport).   The project consists of constructing approximately 2.5 miles of 4” to 10” PVC and HDPE pipeline and connecting up to 34 landscape irrigation connections.  Approximately 190 AFY of recycled water will be used for landscape irrigation at businesses and roadway medians.  This project also includes retrofit of backflow preventers required to connect users.

The existing recycled water treatment, storage and pumping facilities that currently serve the Zone 1 recycled water project will also serve the new Concord recycled water project.

10" HDPE



10" PVC



8" PVC



6" PVC



4" PVC







approximately 2.5





Service Laterals



On-Site Connections



The project is a component of the CCCSD Recycled Water Program. The CCCSD Recycled water program mission is to provide local businesses and parks with a cost effective drought-proof water supply for industrial and landscape irrigation applications.

Contra Costa Water District Urban Water Management Plan (2011)

2012-2013 Contra Costa Sanitary District Capital Improvement Budget & 10 year plan

CCCSD Salt and Nutrient Management Plan Analysis prepared by RMC (2010)

Project Environmental Information Form prepared by CCCSD (2011)

Surface water bodies: Walnut Creek Watershed and Suisun Bay Watershed

Groundwater basins: Ygnacio Valley Basin

Irrigation demands are seasonal, with peak demand in summer time. Water shortages typically occur during the summer months. Therefore, irrigating with recycled water reduces regional water demand during times where water shortages are most likely to occur. This improves regional water supply reliability.  Water recycling is a component of Contra Costa Water District’s (CCWD) long-term sustainable water supply strategy.  In times of water shortages CCWD may impose water rationing.  This project reduces the water demand and mitigates water shortages during drought year.  CCWD water supply is from Sacramento-San Joaquin Delta.  Using recycled water for landscape irrigation reduces demands on the Delta.

In times of water shortages in the Contra Costa Water District’s service area, water rationing can be employed.  The use of recycled water for landscape irrigation reduces the demand on the CCWD potable system, lessening the need to ration.  Customers using recycled water will not be affected by water rationing that Contra Costa Water District puts in place during water storages.  

The primary benefit of this project is that it will offset 190 afy of the potable water, originating from the Delta, currently used for landscape irrigation.  It reduces freshwater diversions from the Sacramento Delta and improves regional water supply reliability.  Water reuse also reduces CCCSD discharge volume, which reduces pollutant loading into Suisun Bay.

Recycled water contains ammonia, which fertilizes turf. Customers reduce/eliminate fertilizer application, thus reducing emissions related to fertilizer production.

Increases Water Supply Reliability
Advances/ Expands Conjunctive Management of Multiple Water Supply Sources
Increases Water Use and/or Reuse Efficiency
Provides Additional Water Supply
Promotes Water Quality Protection
Reduces Water Demand
Advances/Expands Water Recycling
Promotes Urban Runoff Reuse
Addresses Sea Level Rise
Addresses other Anticipated Climate Change Impact (e.g. through water management system modifications)
Improves Flood Control (e.g. through wetlands restoration, management, protection)
Promotes Habitat Protection
Establishes Migration Corridors
Re-establishes River-Floodplain Hydrologic Continuity
Re-introduces Anadromous Fish Populations to Upper Watersheds
Enhances and Protects Upper Watershed Forests and Meadow Systems
Other (Please Describe)
Increases Water Use Efficiency or Promotes Energy-Efficient Water Demand Reduction
Improves Water System Energy Efficiency
Advances/Expands Water Recycling
Promotes Urban Runoff Reuse
Promotes Use of Renewable Energy Sources
Contributes to Carbon Sequestration (e.g. through vegetation growth)
Other (Please Describe)
Recycled water contains ammonia, which fertilizes turf. Customers reduce/eliminate fertilizer application, thus reducing emissions related to fertilizer production.
$4,100,000(low) - $4,200,000(high)
CCCSD Sewer Service Charge
Revenue from recycled water sales
Drought Preparedness
Use and Reuse Water More Efficiently
Climate Change Response Actions (Adaptation to Climate Change, Reduction of Greenhouse Gas Emissions, Reduce Energy Consumption)
Expand Environmental Stewardship
Practice Integrated Flood Management
Protect Surface and Groundwater Quality
Improve Tribal Water and Natural Resources
Ensure Equitable Distribution of Benefits
Reduce Reliance on the Bay-Delta
Reduce Water Demand
Improved Operational Efficiency and Transfers
Increase Water Supply
Improve Water Quality
Improve Flood Management
Practice Resources Stewardship
Other Strategies (Please Describe)
Groundwater Management Plan
Urban Water Management Plan
Water Meter Requirements
Groundwater Monitoring Requirements
AB 1420 Compliance
BMP Compliance
CEQA Compliance
Water supply reliability, water conservation and water use efficiency
Stormwater capture, storage, clean-up, treatment, and management
Removal of invasive non-native species, the creation and enhancement of wetlands, and the acquisition, protection, and restoration of open space and watershed lands
Non-point source pollution reduction, management and monitoring
Groundwater recharge and management projects
Contaminant and salt removal through reclamation, desalting, and other treatment technologies and conveyance of reclaimed water for distribution to users
Water banking, exchange, reclamation and improvement of water quality
Planning and implementation of multipurpose flood management programs
Watershed protection and management
Drinking water treatment and distribution
Ecosystem and fisheries restoration and protection
Reduced Reliance on the Bay-Delta
Projects that directly address a critical water quality or supply issue in a DAC
Urban water suppliers implementing certain BMPs as on page 17 of Guidelines
Be designed to manage stormwater runoff to reduce flood damage (PRC §5096.827)
Be consistent with the applicable Regional Water Quality Control Plans (Basin Plans) (PRC §5096.827)
Not be a part of the State Plan of Flood Control (SPFC) (PRC §5096.827)

The project reduces environmental impacts on two water bodies: Suisun Bay and the Sacramento/San Joaquin Delta. Using recycled water for irrigation reduces wastewater discharge volume and pollutant mass loading to Suisun Bay (CCCSD's receiving water body).

With this project, recycled water from the CCCSD facility replaces about 190 afy of potable water, sourced from the Delta, used for landscape irrigation. The project helps protect the monetary investment and aesthetic value of landscaping owned by local businesses and public agencies (i.e. road medians). I provides irrigation water during droughts and reduces the need for CCWD to ration water during water shortages.


Project team

Part 3 - Benefits

Concord Template.xlsx — ZIP archive, 172Kb