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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.

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

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. It's free for communities to use.

We've prepared a walkthrough on YouTube to understand the basics.

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

384

organizations
Go to organizations
566

datasets
9,569

locations
81.1K

observations
722.6K

datapoints
Browse datapoints by location
4,059

data contributors

Popular testing spots

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Recently sampled and photographed

Most active datasets

Active this week

Lea Guardians

Part of the organization: Thames21

31K datapoints in 2,956 observations at 131 locations. 13 new observations this week.
Sault Ste. Marie Water Rangers Team

Part of the organization: NORDIK Institute

27K datapoints in 1,275 observations at 33 locations. 11 new observations this week.
Community Water Leaders

Part of the organization: Bay Area Restoration Council

5,397 datapoints in 365 observations at 26 locations. 11 new observations this week.
Brent Catchment Water Quality Working Group

Part of the organization: Thames21

10.4K datapoints in 769 observations at 106 locations. 9 new observations this week.
River Worth Water Blitz

Part of the organization: Aire Rivers Trust

1,548 datapoints in 72 observations at 30 locations. 9 new observations this week.
South Craven Becks Chemical Sampling Groups

Part of the organization: Aire Rivers Trust

399 datapoints in 21 observations at 29 locations. 9 new observations this week.