The Contra Costa County Climate Leaders (4CL) program is a network assisting the county and its 19 cities to inform, support and encourage the measurement and reduction of greenhouse gas emissions. Through education and sharing of best practices we will ensure sustainable, healthy and livable cities.

Contra Costa County

Contra Costa County recognizes that climate change is a critical issue that poses a substantial long-term threat locally and globally. In 2005, the County Board of Supervisors acknowledged that local leadership is critical to address this urgent issue and formed the multi-departmental Climate Change Working Group comprised of top-level managers representing five County departments. The County has already implemented a wide range of policies and practices that reduce greenhouse gas (GHG) emissions by reducing vehicular emissions, conserving energy and minimizing waste.

Contra Costa County Accomplishments:

General Plan Update

  • Contra Costa County last updated its General Plan in 2005 to run through 2020. It includes elements on improving renewable energy access, improving bicycle and public transportation access and preservation of open spaces.

Climate Action Planning


Waste Reduction

Water Conservation

  • The Central Contra Costa Sanitary District provides recycled water to landscape irrigation, parks, schools, and to industrial use and recognized as a “Green Business” under the California Green Business Program
  • The Contra Costa Water District holds water conservation workshops for the community and has high-efficiency toilet rebates for residents and commercial properties.
  • The East Bay Municipal Utilities District offers a variety of rebates from their WaterSmart Center, irrigates with recycled water, and also created the East Bay Watershed Master Plan which manages lands and reservoirs to protect water quality and preserve environmental resources.


  • The Central Contra Costa Transit Authority’s Go Green Sustainability Program replaced 40 of its 131 vehicles with “eco-warrior” vehicles, which reduce emissions by 85% and are made of 100% recyclable aluminum panels. 9 of the new buses are hybrids.
  • The Contra Costa Transportation Authority adopted the Countywide Bicycle and Pedestrian Plan in 2009. This plan proposes changes that affect walking and bicycling in Contra Costa and helps local jurisdictions become eligible for the Bicycle Transportation Account funds.
  • The Contra Costa Transportation Authority is currently in the process of updating its Countywide Transportation Plan, one of the key planning tools called for in the Growth Management Program.
  • The Contra Costa Transportation Authority, as a part of the Transportation Fund for Clean Air (TFCA) allocates $1.3 million annually for projects that reduce air pollution caused by motor vehicles such as rideshare programs, clean fuel buses, and much more.

Open Space


  • The Contra Costa Health Services Environmental Health branch enforces the standards for land use, solid waste, small water systems, medical waste, and more.

CCC website

Last updated 2016