Marea — por el agua

Saving the bay starts before the trash reaches the water

We intervene in the urban drainage channels of Asunción with waste interception systems, generating data, recycling, and education to restore aquatic ecosystems in a real and measurable way

We are not a cleanup initiative

We are an environmental intervention system

We act at the points where the problem actually occurs: the channels that discharge waste directly into the bay. There we intercept, measure, recycle, and transform.

Canal contaminado en Asunción

Our pillars

Our pillars

Interception & prevention

Interception & prevention

We install barriers and interceptors at critical drainage points to prevent waste from reaching the bay. The key is not cleaning up after — it's stopping it before.

Management & traceability

Management & traceability

Every intervention generates data: volume, weight, frequency, and waste typology. This allows us to understand the problem with precision, not assumptions.

Recycling & transformation

Recycling & transformation

Recovered waste doesn't end up in a landfill. We work with partners to transform materials into new products. The problem becomes a resource.

Education & social impact

Education & social impact

We use data and recycled materials to educate. Evidence-based environmental awareness, educational programs, and products that tell the story of waste.

Pilot project

Guardians of the Bay

Our first project involves installing a waste interception system in a drainage channel in Asunción that discharges directly into the bay. This pilot allows us to validate the entire model.

1

Interception

Direct capture of waste before it enters the ecosystem

2

Measurement

Recording of volume, weight, and frequency

3

Classification

Identification of waste types

4

Recycling

Material transformation through specialized companies

5

Education

Using results and recycled products to generate real impact

A cycle that transforms waste into real change

Our model

Capture

01

Measure

02

Transform

03

Educate

04

Scale

05
Contaminación en la bahía

Real results, not promises

Impact

Real results, not promises

Direct reduction

Less waste reaching the bay from day one of operation

Real data

Precise information about urban contamination for informed decision-making

New opportunities

Recycling chains that generate economic and environmental value

Educational tools

Evidence-based programs that transform environmental awareness

Replicable model

A scalable system for other channels and cities in the region

Events

Encounters with the community

Every cleanup day is a chance to connect with the territory, generate data, and build network. Here we document what we do on the ground.

Cleanup day & launch
MAR222026
World Water Day

First event — Launch of the association and Guardians of the Bay

Cleanup day & launch

March 22, 2026Antequera stream — under the Costanera bridge, toward Chacarita

On Sunday, March 22, in the framework of World Water Day, we held the first event of Asociación Marea. This day marked the official launch of both the association and our first project: Guardians of the Bay.

Beyond a one-off cleanup, we wanted to understand the reality of the channel, connect with the community, and start building a network on the ground.

It's not just about cleaning up — it's about stopping the pollution at its source.

20

Volunteers

Municipality staff, sports groups, and friends of the association

~5 t

Waste removed

Between 4.7 and 5.1 tonnes total

33

Bags collected

30 of textile waste + 3 of recyclables

What we removed

  • Illegal dump site~4 tonnes

    Removed with support of a truck and a tractor

  • Manual collection600 – 1,050 kg

    30 bags, mostly textiles (clothes and sheets) under the bridge

  • Recyclables sorted75 – 90 kg

    3 bags, mostly glass, alongside a small amount of cans

This first day didn't just clean a stretch of the channel — it gave us key information about the waste typology, strengthened the volunteer network, and took the first step toward more sustainable long-term solutions.

Behind the scenes

Building a river interceptor in Asunción

An 8-part series with the founder

A blog series documenting how we're trying to stop the trash before it reaches the bay — in real time, with the failures included.

01Post 1 / 8

I went rowing and the bay was full of trash

After every heavy rain, the bay turns into a moving landfill. You don't need a study or a satellite — you just need eyes and a paddle.

3 min readRead post
02Post 2 / 8

Why most river cleanups in Paraguay fail (and what we're doing differently)

Pretending you're the first to discover a problem is the fastest way to repeat someone else's mistakes. So we went looking.

5 min readRead post
03Post 3 / 8

Before we built anything, we cleaned the river by hand. Most of what we pulled out wasn't plastic.

We thought we were solving a plastic problem. The data is telling us it's at least partly a fast-fashion problem.

4 min readRead post
04Post 4 / 8

Three stages, no motor: how the interceptor actually works

Trash is a spectrum from tree trunks to microplastic. One barrier won't do it.

4 min readRead post
05Post 5 / 8

Antequera — where we're putting the first one (and what could go wrong)

Hardware projects fail when they meet reality. So we're going to meet reality on purpose.

5 min readRead post
06Post 6 / 8

From the river to a park bench: what happens to the trash after we catch it

A bench made from the river's plastic, sitting in a park near that same river, is the opposite of "away."

3 min readRead post
07Post 7 / 8

Why we called it Marea (and where this is going)

The actual win condition isn't 'Asunción is clean.' It's 'someone we've never met copies it without asking.'

3 min readRead post
08Post 8 / 8

How to actually help (we'll take everything)

If you're in Asunción and want to help, contact us. If you're not in Asunción but you have an Antequera, copy us.

3 min readRead post

Join the movement

Saving the bay is possible. Every channel we intervene is a step toward a healthier ecosystem.

Diana

Diana

Fundadora / Founder