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Collect, share, and explore community water science data

We’re a non-profit on a mission to make water science accessible! Our free, open-access platform, testing equipment, and training resources help communities collect, organize, and share water quality data.

How it works

Map showing community water quality sites

Browse all of the data!

Explore community-collected water quality data on our public map. Search by location, dataset, or organization, then view sites and trends or download what you need.

Explore the map

Adding a dataset and inviting volunteer monitors on the Water Rangers platform

Set up your own dataset

You can easily add your organization and dataset, customize your form fields using Water Rangers’ equipment plus your own, and invite your volunteer monitors to contribute.

How to set up a dataset

Sharing water quality data with visualizations, downloads, API, and local standards

Built for sharing

We make your water quality data easy to understand with simple visualizations. Want to do more? We follow open data standards so your work can be compared, understood, and acted on. You can download datasets or connect to our open API to pull data into your own projects.

Learn about sharing data

Popular testing spots

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Recently sampled and photographed

Most active datasets

Active this week

Latest observations

Explore all observations