Preserve
Protect & Promote

Welcome to Seneca Lake Pure Waters Association

Seneca Lake Pure Waters Association is a 501(c)3 organization committed to preserving, protecting, and promoting the abundant resources of the largest Finger Lake. Seneca Lake is a source of drinking water, recreation, and economic opportunity for the greater community and its visitors. Our programs and partnerships make it possible to monitor water quality, educate the public, and evaluate threats to ensure the a healthy future for Seneca Lake and those who depend on it.

HABS 101

Learn how to recognize harmful algal blooms (HABs), why they happen, and how Seneca Lake Pure Waters Association is monitoring and responding to protect our lake.

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Live Lake-Friendly

As one of over 100,000 residents who use Seneca Lake as a primary water source, you can make a difference in the water quality of Seneca Lake.

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Be a Citizen Scientist

Volunteers and citizen science provides the backbone of our organization, allowing us to further our mission through collaborating with partners and providing education and outreach.

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Make an Impact

Membership dues, donations and grants help to fund our water quality monitoring programs and our efforts to preserve Seneca Lake for future generations.

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Our 2025–2026 Annual Report Is Here!

Our 2025–2026 Annual Report is now available to read online!

Take a look back at the past year of work to protect and preserve Seneca Lake and its watershed — from water quality monitoring and watershed projects to education, community outreach, volunteer efforts, and more.

Read the 2025–2026 Annual Report

Featured Projects

Pure Brew Week

SNPR Projects

HWA

Latest News

September 11, 2026
Pure Waters Supports Moratorium on Data Center Development

GENEVA, N.Y. – Greenidge Generation in Dresden has been pivoting from its Bitcoin mining business to an AI Data Center. Their transition involves a name change to Vulcan Infrastructure and Power (VIP). There has been pushback on Data Centers around the country and in NYS. Governor Hochul signed an Executive Order to establish a 1...

September 11, 2026
Seneca Lake Pure Waters 2026 Volunteer Recognition

GENEVA, N.Y. – Seneca Lake Pure Waters Association (Pure Waters) is proud to recognize the volunteers, community partners, and continuous supporters whose dedication makes the work to protect Seneca Lake possible. Over 170 volunteers contribute their time and expertise to water quality monitoring, environmental stewardship, education, outreach, and other programs throughout the Seneca Lake watershed. ...

September 3, 2026
Looking Back: The 2018 Seneca Lake Flood

GENEVA, N.Y. – Eight years can feel like a long time. And then you come across a photograph from August 2018, and suddenly it doesn’t feel all that long ago. For those who lived through the flooding around Seneca Lake that summer, these images may bring back memories they’d rather leave in the past. For...