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
  • Mangrove conservation
  • 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

If you would like to know more, refer to my LinkedIn account and/or my CV

Elena Leonova

Marketing Communications Specialist

I have embarked on a journey as a part of the PULSAQUA team in 2021, and since then have been working on connecting people interested in citizen science with the means of catalyzing a positive change. My favorite thing about my job is the opportunity to work with amazing goal-driven and science-oriented partners, clients, and researchers.

Topics of knowledge include:

  • Photography
  • Digital marketing
  • Storytelling
  • Branding


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.

Address: Jacques Dutilhweg 333,
3065 HJ Rotterdam, The Netherlands
Phone: +31 6 22413966
E-mail: sandra@pulsaqua.com