oceans by
the world

Protecting oceans
by Re-potty training
the world

We are the
ocean sewage

We are the ocean
sewage alliance

and we have good news

Human waste is one of nature’s most versatile and abundant natural resources. But unfortunately, the majority of it ends up in our oceans. In fact, around 80% of the world’s wastewater is discharged into the environment, untreated.

Wastewater pollution is harming our oceans, with impacts felt across both developed and developing nations. Its ripple effects jeopardize economic stability, food security, coastal resilience, and public and environmental health. But there’s actually good news. There are many solutions already in place to treat wastewater more effectively and to tap into waste's potential as a powerful resource—both of which can improve a whole host of global issues. The solutions already exist; let’s make them a reality.

Learn more



What Lies Beneath…



wasting less waste starts here

Nature based solutions image Nature based solutions image
Resource recovery image Resource recovery image
Enhanced treatment systems image Enhanced treatment systems image

resource recovery

Brimming with nutrients and energy, poo and pee are full of untapped potential. We can harness these materials by converting our waste into resources that are integral to everyday life.

Fuel image


In a time where we're searching for more renewable and eco-friendly options, the answer could be in our poo. We can transform waste into fuel for electricity, heat, and biofuel production.

Clean water image

Clean water

Water is one of our most precious resources. Our wastewater can be treated and reused for anything from irrigation to clean drinking water.

Fertilizer image


Human waste is incredibly rich in nitrogen and phosphorus. After treatment and processing, we can extract these ingredients to use to grow food.

How can
you help?

How can you help?

There are many ways you can get involved and reduce the impacts of wastewater pollution. It all starts with educating yourself about how waste is managed in your own home and community.

Refrain from flushing pharmaceuticals or personal hygiene products down the toilet.

Regularly maintain your home’s stormwater gutter system, as well as any on-site septic systems, if you have one.

Start breaking the taboo by talking about the issue with your friends and family.

Join the

Join the alliance

Interested in putting an end to waste?

Stories from the field

Stories from the field

  • Hawaii
    Cinderella toilet and greywater system
    Stuart Coleman
    Stuart co-founded WAI Clean Water to tackle water quality issues at the source. He and his team piloted the Cinderella Incineration Toilet, an innovative toilet alternative that burns waste to eliminate bathroom blackwater. They’re now combining it with greywater and blackwater systems to create a cesspool replacement.
    Portrait Stuart Coleman image
  • Puerto Rico
    Bioreactor garden
    Paul Sturm
    Tired of the pervasive wastewater pollution in coastal communities, Paul founded Ridge to Reefs to achieve tangible results through low-cost, nature-based solutions. He and his team constructed a bioreactor garden capable of removing 70-90% of nitrogen pollution from a failing septic leach field.
    Portrait Paul Sturm image
  • Fiji
    Environment & human health project
    Dr. Sangeeta Mangubhai
    Sangeeta from WCS is revolutionizing watershed and water management through the WISH Fiji project’s integrative systems approach. She's co-leading a project with key academic institutions, and partnering with government ministries and development partners—all to empower local communities and improve human and ecological health via catchment management and policy interventions.
    Portrait Dr. Sangeeta Mangubhai image

About us

We're a diverse collective of organizations who have joined forces to tackle sewage and other types of wastewater pollution in our oceans. Think of us as an octopus with many tentacles, working together to address the issue through shared knowledge and action.

Meet the Alliance
Coral Reef Alliance logo image
Rare logo image
Healthy Reefs logo image
ELAW logo image
Imagine H2O logo image
Reef Resilience Network logo image
Flush Wash logo image
Aquarium of The Pacific logo image
Duke Restore logo image
Sea Grant University of Hawaii logo image
Earthjustice logo image
Surfrider Foundation logo image
Ridge to Reefs logo image
The Nature Conservancy logo image
Duke University Wetland Center logo image
Wastewater Alternatives and Innovations logo image
Wildlife Conservation Society logo image
World Resources Institute logo image
Resilient Cities Network logo image
Reef Power logo image
Rich Earth Institute logo image
Precovery Labs Institute logo image

Become a

Become a

When you sign up, you'll subscribe to our newsletter with the latest news, stories from the field, and tips on how to get involved every step of the way.

with us

with us

We're always looking for new individuals and organizations interested in joining the Ocean Sewage Alliance and helping us grow the effort.