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AquaLens

About

Built for the field. Built to be inspected.

AquaLens tells drinking-water utilities and reservoir managers which water to sample first. For each lake or reservoir it takes the newest Sentinel-2 image that sees the water, measures chlorophyll-a, turbidity and plants on the water, and places the result on the WHO chlorophyll alert levels. Five Gemini agents then add history and local context and write the brief and a public summary. They never change the score.

Why it exists

An algal bloom can build up between two sampling rounds. Sentinel-2 sees every lake every few days for free, but turning its bands into a decision takes remote-sensing expertise most water teams do not have. AquaLens does that work and says where the next lab sample matters most. It does not replace the lab.

How it is checked

Every science change is tested on reference Sentinel-2 scenes and needs a science owner's sign-off. The chlorophyll levels are compared with laboratory samples, and past scores are restated in public when the science changes. The results are on the Verified page. AquaLens is open source under the MIT License. Its results are advisory, not certified water-quality results.

Author

Talha Abid · GitLab @talhaabidj1 · GitHub @talhaabidj

How it works

From a lake on the map to an answer in a minute.

  1. 1Pick a lake

    Search for it, paste coordinates or tap it on the map. AquaLens draws its outline for you.

  2. 2The satellite reads it

    AquaLens finds the newest clear satellite photo of the lake and reads its colour for algae, mud and floating plants.

  3. 3Get a clear answer

    Low, Medium or High, what it means for swimming, pets, fishing and drinking water, and how sure it is. About a minute.