Our lakes, rivers, and oceans need your help.

Our easy-to-use water quality testkits and open data platform help anyone collect water quality data for fresh and ocean water. So far, thousands of volunteers in over 20 countries have joined the movement. Ready to dive in?

Here's how it works

Our testkits are designed for in-the-field results

Freshwater Explorer Testkit

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Education Testkit

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Compact Ocean Explorer Testkit

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Co-branded Freshwater Explorer Testkit - customize with your logo!

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Dissolved oxygen

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Conductivity meter

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What does 'accessible' water quality mean?

Our data system allows anyone to get started recording and sharing data. We are also committed to sharing data openly, allowing decision-makers and communities access to our information.

Visit our data platform

42k+ Observations in 20 countries

Helping you and your community...

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Test water quality

Our testkits are designed for anyone to use, plus they give results right away (fresh and saltwater!).

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Share your data openly

Your community can collect and share water quality data. Not sure where to start? We'll show you how!

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Act to protect water

What does it mean to protect waterways? Our research aims to improve tools and understand how we can help.

Explore our research

How's your water quality?

Did you know? According to WWF's Watersheds Report, over 60% of Canadian subwatersheds are so data poor, we don't even know if they're healthy or not. That's where you come in. We need your help to fill data gaps! We believe that crowdsourcing water quality data through community water monitoring is a great way to help scientists fill in gaps to achieve sustainable water monitoring.

How to start your own group

Visit the testkit store

Latest news

Water Rangers is a Data Champion grant recipient

Posted on by Gabrielle Parent-Doliner

We are is so proud to announce that Water Rangers is a Data Champion grant recipient from the Digital Research Alliance of Canada. Water Rangers is a Data Champion “Data […]

Ripple Effect Episode 5: Healing Hamilton’s relationship with its water

Posted on by Gabrielle Parent-Doliner

This month, Water Rangers met with the Bay Area Restoration Council to profile BARC’s mission representing the public interest in the restoration of the Harbour and its watershed. Welcome to […]

Read all the news

The Ripple Effect Episode 5

'Healing Hamilton’s relationship with its water'

Amazing to see what can happen when we work to rebuild our relationship with our waterways. Check out episode 5 of our Ripple Effect series featuring BARC and their work to engage the public in the restoration of the Hamilton Harbour.

Episode 5 Healing Hamilton's relationship with its water

In the media

All about the Lake Erie Guardians program

CTV News Windsor

Un projet de science citoyenne pour mieux connaître l’état de l’eau douce au Canada

Radio-Canada ICI Toronto

Benefits of water testing

Breakfast Television on CityTV Toronto

On the radio

Radio-Canada: "Faire appel à la population pour tester l'eau des lacs" CBC: Easy-to-use portable water-testing allows anyone to monitor water quality

Featured on...

Credit Card Rewards can support Water Rangers' data collection CardRates.com Get Your Feet Wet! Water Rangers Offers New Tools for Citizen Scientists Ottawa Magazine Made-in-Ottawa app helps volunteers keep watch over river CBC Ottawa Water Rangers: Putting water quality testing into the hands of citizen scientists Ingenium Channel Water Rangers Does Citizen Science Freshwater Alliance Hacking the Watershed Corporate Knights Hub Ottawa: Water Rangers helps people take action to protect our local water Apt613 Water Rangers with ACAP Saint John ACAP Saint John Open your eyes to water quality with Swim Guide – and Water Rangers Lake Ontario Waterkeeper

Thank you to our supporters!

Water Rangers' impact would not be possible without the generosity of our funders and supporters.

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I took a test kit along to the Toronto Island for a day on the lagoon. The kit fits easily on a paddleboard and this allows you to take water samples from places other than the shoreline. All of the instruments were easy to use, even on a moving board!

Elise Mackie, Swim Drink Fish