
GRAVITY 08
AquaWatch-AUK Edition
Deadline for Innovator Applications: 20 July 2025 | 23:59 UTC
Harnessing ground-to-space monitoring to tackle the most pressing water quality issues.
Will you take on the challenge?

GRAVITY Challenge
Deloitte’s global Space innovation program connecting real world problems with the people who can solve them.
Since 2019, we’ve brought together industry leaders from public and private organisations, data & technology enablers, and innovators to tackle the world’s most pressing economic, social and environmental problems using the best of today’s space-enabled data and technology.
A Special GRAVITY Round
AquaWatch-AUK Edition
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As an extension of the AquaWatch-AUK program, co-funded by the Australian and UK Space Agencies, this round of the GRAVITY Challenge focuses on leveraging the power of ground-to-space monitoring capabilities to solve a range of water quality issues in both nations.
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Droughts, algal blooms, sediment plumes, and invisible pollutants are no longer future threats, they’re present-day disruptors. Whether it’s the water we drink, the crops we grow, the seafood we eat, or the rivers we swim in, water quality touches every part of our lives and economy.
And the pressure is rising. Climate extremes, outdated infrastructure, industrial pollution, and land use change are stretching water systems past their limits.
Poor water quality is already costing us: in lost agricultural yield, fish kills, treatment costs, product recalls, and environmental damage.
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All participating Innovator teams will be required to collaborate with relevant members of the AquaWatch-AUK program and explore how AquaWatch capabilities can support the development of their solutions.
To facilitate this collaboration, the AquaWatch-AUK team will provide:
Webinars/Walkthrough Videos on AquaWatch capabilities, and relevant use cases
Access to Key Datasets relevant to water quality monitoring in applicable regions
Scientific Mentoring from water quality researchers and domain experts
Ongoing Technical and Strategic Support throughout the challenge
This collaboration is aimed at encouraging innovative solutions and helping teams co-design impactful, real-world solutions to water-related challenges.
Are you a start-up, scale-up, high-growth business or university using space capabilities?

GRAVITY 08 Challenges
Our Challenge Providers need your help designing solutions to their water quality monitoring Challenges.
Read more about their challenge scope below.
Beyond the Bucket:
Reimagining Environmental Sampling from Space
Develop a scalable model that accurately classifies and predicts chlorophyll-a concentrations in diverse inland and coastal water bodies using EO, in-situ, and historical datasets.
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This challenge aims to transform how chlorophyll-a, a key ecological indicator, is monitored across a wide variety of inland and coastal water bodies. Currently dependent on sparse, single-point field manual monthly sampling, the solution should integrate EO-derived parameters (e.g. chlorophyll, temperature from AquaWatch), historic sampling datasets, and sensor inputs to enable model-driven classification and forecasting. Innovators are expected to focus on enhancing spatial and temporal coverage particularly during the growing season when algal bloom activity peaks. The proposed methodology should be tested across a representative subset of large, socially significant water bodies and demonstrate alignment with regulatory reporting standards. The goal is to use EO data to complement field sampling and enable broader, more efficient ecological status reporting under a regulatory framework. While visualisation tools aren’t required, reproducibility, transparency, and Azure compatibility are desirable.
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Must-Have:
Chlorophyll-a
Temperature
Historical bloom patterns
Nice to have:
Phytoplankton abundance
Phytoplankton Functional Types (PFT)
Cyanobacteria / Blue-green algae
Total cell counts
Biovolume
Water transparency (e.g. Secchi Disk)
Turbidity
Vertical attenuation/Kd
Total Suspended Matter
Dissolved Oxygen
Water Surface Temperature
Water Column Depth (Bathymetry)
Tracking Pollutant Pathways & Water Quality Impact
From Catchment to Coast:
Build an integrated system to trace, model, understand and predict water quality degradation and pollutant risks (such as algal bloom and faecal microbes) in Port Phillip Bay by tracking storm-driven nutrient and sediment load pathways from catchments to the coast using EO and in-situ data.
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This challenge seeks an integrated, data-driven system that maps how sediment and nutrient loads, particularly during major rainfall events, move from rivers and urban catchments into Port Phillip Bay. Innovators must integrate EO datasets with in-situ monitoring and predictive analytics to identify pollution sources such as the Western Treatment Plant, and the Werribee, Maribyrnong, Yarra and Patterson Rivers. Innovators must also model localised load dynamics and forecast pollutant risk onset and severity. Key outputs include early warnings, bloom classification (including toxicity risk), traceability to contributing catchments or discharge points, and a conceptual diagram of algal bloom trigger events. The solution must complement existing monitoring networks, with potential for integration into current systems.
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Must-Have:
Nutrients
Sediments
Chlorophyll-a (toxicity)
Nice to have:
Phycocyanin (cyanobacteria proxy)
Total Phosphorus
Total Inorganic Nitrogen (e.g. Nitrate-N)
Algal toxins
Dissolved Oxygen
Turbidity
Total Suspended Matter
Temperature
Pathogens
Organic micro-pollutants
Water surface height
Microplastics *
Salinity / Conductivity
Floating and submerged vegetation
Innovator
Journey

Innovator
Benefits
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Direct contact with Corporate and Public Sector businesses with real use cases and real end-customers.
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Technical, Commercial and Scientific Mentorship and support from Deloitte’s GRAVITY Challenge team and venture building experts, the AquaWatch-AUK Program partners, scientists, water quality researchers and domain experts.
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Privileged access to key datasets relevant to water quality monitoring in applicable regions including more than 20 years of historic, and current satellite data from the AquaWatch-AUK program partners.
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Full IP ownership of the solution developed during the program.
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Guidance from Deloitte’s GRAVITY Challenge team during the scale phase to support the pilot of solutions, if selected as the “Challenge Champion” (winning team).
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Our GRAVITY Challenge Alumni