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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Your Gift Protects Our Lake’s Legacy

Seneca Lake has given generations of families countless memories—swimming, boating, fishing, and gathering by the water’s edge. Today, it needs your help to remain healthy and thriving.

Your donation to Seneca Lake Pure Waters Association supports critical programs that protect water quality, preserve wildlife, and ensure the lake remains a source of joy and inspiration for generations to come. Every gift makes a difference.

Give Today. Protect Tomorrow.

Featured Projects

Pure Brew Week

SNPR Projects

HWA

Latest News

February 6, 2026
Hemlock Woolly Adelgid and Seneca Lake Water Quality in the Local Spotlight

GENEVA, N.Y. – Our work to protect hemlock trees around Seneca Lake has been getting some helpful attention in local media, giving us the chance to talk more openly about Hemlock Woolly Adelgid (HWA) and why it matters for lake health. Earlier this week, Benjamin Klein, association director of Seneca Lake Pure Waters Association (Pure...

January 12, 2026
Clean Water Is the Foundation of Everything

GENEVA, N.Y. – When people think about protecting Seneca Lake, they often picture environmental advocacy in isolation. But during a recent conversation on the FLX Morning Show, Ben Klein, Association Director of Seneca Lake Pure Waters Association (Pure Waters), emphasized that the work is about much more than conservation alone, likening the organization to a...

January 5, 2026
Hemlock Tree Treatment Update

GENEVA, N.Y. – Slow and steady progress continues in our efforts to treat hemlock trees affected by the Hemlock Woolly Adelgid. While state agencies are working to protect hemlocks on public lands and in state parks, Seneca Lake Pure Waters Association (Pure Waters) is focused on hemlocks located on private property—particularly those flanking cold-water streams...