Reduce water pollution

A rain barrel, shown above, collects and stores rainwater from roofs, reducing the amount of stormwater runoff that would otherwise flow over surfaces and carry pollutants into local waterways. By capturing this water, rain barrels help decrease local water pollution by minimizing the transport of contaminants such as oils, chemicals, and debris into streams and rivers.

Water pollution is a significant environmental issue that poses threats to ecosystems, public health, and our quality of life. In the city of Cupertino, stormwater runoff carries a variety of pollutants such as pesticides, fertilizers, motor oil, pet waste, litter, and sediment directly into local creeks and the San Francisco Bay.

To address this problem, the City's Climate Action Plan is focused on expanding green stormwater infrastructure across the community. By implementing nature-based solutions like bioswales and rain barrels, the City aims to maximize runoff retention, filter pollutants, and increase resilience to climate hazards. These efforts prioritize vulnerable communities and provide incentives to help residents adopt water-efficient practices in their homes.

The City is also sponsoring resident-led water conservation efforts which have the added benefit of helping reduce pollution from stormwater runoff. Check out the programs and learn what resources are available to you here.

Alignment with Climate Action Plan

Measure AR-1. Increase usage of natural infrastructure solutions such as bioswales, rainwater storage systems, and permeable pavements to enhance infrastructure resiliency.
Measure WW-1. Reduce per capita water consumption by 15% compared to 2019 levels by 2030 and maintain through 2040.
Action AR 1.1. Prioritize opportunities to focus green stormwater infrastructure improvements in vulnerable communities and the areas of most need including areas with a large proportion of renters, low-income areas, and in historically underserved communities.
Action WW 1.5. Continue to provide rebates or other funding to low- and medium-income homes for installing laundry to landscape systems, rainwater catchment systems, and low-flow appliances.

Co-Benefits

Climate Change Resilience

By enhancing the City's ability to manage stormwater runoff, green infrastructure helps mitigate the risks of flooding and other climate-related hazards. These nature-based solutions also have the potential to lower ambient temperatures, offsetting the urban heat island effect.

Biodiversity & Ecosystem Services

Green stormwater infrastructure like bioswales and rain gardens provide valuable habitat for pollinators and other wildlife, contributing to the City's overall biodiversity. These natural systems also help filter and purify water, supporting the health of local aquatic ecosystems.

Cost Savings

Reducing water pollution through green stormwater infrastructure protects public health by keeping harmful substances out of our water supply and recreational areas. Additionally, the increased green spaces created by these features can provide opportunities for outdoor recreation and improve overall community well-being.

Action
	Support sustainable wastewater processing projects
	Leverage the carbon sequestration potential and community benefits of open spaces
	Expand the urban tree canopy
	Reduce water pollution

Reduce water pollution

What is green stormwater infrastructure?

What is a bioswale and what are its benefits?

How can residents help reduce water pollution?

Alignment with Climate Action Plan

Co-Benefits