We test on the last Sunday of every month.

Need testing equipment? You can get it at our online store.

Why monthly testing?

To establish a baseline, water needs to be tested on a regular basis. Learn more about our mission and protocol here.

Interested in signing up as a group?

You can join Water Rangers as an individual or as part of a group. By signing up as a group, you and your volunteers can organize and view your data all in one place. The best part? Signing up is free!

As a group admin, you'll be able to:

Organize members and encourage them with leaderboard challenges
Keep all your data together, and download it at anytime
Publicize your organization and link back to your own website
Draw a regional shape to show people where you work and get notified by email of any new activity in that region
Choose whether you want to respond to reported issues