Through its independent citizen science research and consultancy PULSAQUA helps build a sustainable world, leading the field when it comes to water-related environmental problems where society is involved. With our citizen science and water management expertise, we help government agencies, NGOs and industries achieve structural change by working together with society.

PULSAQUA advises on citizen science (CS) use, creates CS (monitoring) projects, and delivers environmental impact assessments together with citizen scientists. We help NGO’s, government agencies, and industries to track and monitor specific desired changes that society needs to go through, together with that same society.  For information about our current and previous projects and deliverables, please have a look at the Portfolio page.

Our General Terms and Conditions are applicable on all our offers, quotations, and agreements.

What is in a name

As you might understand, the name PULSAQUA refers to momentum or so-called impulsive force, which is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction in three-dimensional space. If m is an object’s mass and v is the velocity (also a vector), then the momentum is

P = M x V

To induce an impulsive force on water, we just multiply input of many citizen scientists (creating a big mass) with a well-directed velocity (work done by PULSAQUA and finance from clients).

Therefore, a warm welcome to all (future) citizen scientists and clients, together we will be able to bring momentum and change.


A world where people and companies are aware of their own actions and the effect of those actions on their fresh- and saline water environment, in that way achieving the (water-related) Sustainable Development Goals.


To induce an impulsive force on water issues and awareness concerning these issues by advising, creating, and investigating via Citizen Science.


By 2025, start seeing effects on the behavior of people, policies, and companies towards a sustainable future.

Sandra de Vries


In January 2019 I founded PULSAQUA. I am a Water Management engineer, experienced in project set-up and management, citizen science research methods, and connecting science to policy and people. I aim to work with people interested to reach a certain goal, using citizen science methods. I do this in a creative way, not immediately taking the obvious and straightforward route, resulting in surprising and upbeat projects. I hold a guest-researcher position at the Delft University of Technology

Topics of knowledge include:

  • Water-related sustainable development goals (SDG) monitoring
  • Fieldwork for hydrology purposes
  • Green Infrastructure in the urban environment
  • Environmental problems related to water management
    • Plastic waste in the fresh-water system
    • Groundwater over-abstraction
  • Open Science
  • Data analysis and interoperability
  • And of course, citizen science

Anita Milisav

Intern Storytelling & Social Media

In February 2023 I joined the PUSLAQUA team as part of the finalization of my MSc studies in Bio-pharmaceutical sciences and communication (Leiden University). Coming from the field of natural sciences, where I spent most of my time in the lab, I am very excited to step out of the research bubble and combine my background knowledge with the more social aspect of science during my 6-month internship here.

As a science communicator, I am passionate about making science available to everyone, which aligns very well with the idea of citizen science where anyone can make a contribution and do something with their passion for the environment. During my internship, I will focus on optimizing  certain tools that PULSAQUA uses for the Science Citizens platform. I will be involved in the promotion of this platform. In this way, I want to help provide the public with easy access to the handles PULSAQUA offers to help them start their own citizen science journeys.

Topics of knowledge;

  • Chemistry
  • Biology
  • Creative writing
  • Literature research

Camille Janssen

Co-design & Community Specialist

As of June 2023, I have joined PULSAQUA in the role of co-design & community specialist. After completing my master's in Environmental Studies with a focus on water policy & marine systems, I have worked for over 5 years in the international climate space as a project manager and researcher. During these years, I have gained vast experience in community building, while working with a large variety of stakeholders and global organizations. 

I aim to contribute to building a better human-nature relationship at PULSAQUA through the involvement of citizens in complex, relevant, and local issues to create a better foundation for solutions to be successfully implemented. 

Topics of knowledge;

  • Environmental issues 
  • Community engagement & management
  • Circular economy 

Grace Saville

Data Specialist

I am a sporty crafty Kiwi biologist and as of June 2023 I have been carving out the new position of Data Specialist within PULSAQUA. My role involves improving data collection methods such as survey UI, establishing data pipelines, demonstrating (and advocating) FAIR data principles, in particular data accessibility and interoperability, a dash of coding and data analysis, and naturally, assisting my colleagues with the establishment and management of Citizen Science projects.

I am enjoying combining my passion for the environment with my experience in data management, and hope in the future to continue growing my own skills and contributing my ideas to the company.

Topics of knowledge include:

  • Data cleaning and analysis
  • FAIR data principles
  • Scientific methodology
  • Bioinformatics
  • R programming

Niek van der Winden

IoT (Internet-of-things) Specialist

I have built a career at the intersection of software and hardware after completing a general operational technology education, working for various employers, and as a self-employed entrepreneur. I utilize machinery engineering and IT knowledge to connect data to diverse systems. I not only consider existing solutions but also possess the ability to think outside the box and come up with new solutions that unlock relevant data and convert it into valuable information.

Due to my broad expertise, I became involved with Pulsaqua as an IoT specialist. My interest lies in unlocking, integrating, monitoring, and analyzing data with the aim of optimizing processes and maximizing policy impact.


Are you interested in learning more?
Contact us today!
We will get back to you as soon as we can!
Our General Terms and Conditions are applicable on all our offers, quotations and agreements.


Het Brouwershuys, Linker Rottekade 292
3034 CV Rotterdam, The Netherlands

+31 6 22413966