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Water Advisory Committee
Meetings
- 2 pm
- As posted
Meetings are held in person and via Zoom video conference.
- Zoom Meeting
Meeting ID: 879 3667 5561
Passcode: 605050
If attending via Zoom, prior to signing in, make sure you have your first and last name displayed in your Zoom account. Attendees with non-identifying names will not be admitted into the Zoom meeting. Kindly, turn off your camera and microphone until prompted to turn it on by the Chairperson.
Overview
Tests initiated by the Water Advisory and Water Quality Improvement committees demonstrate that up to half of the homes tested in the "high nitrogen" central triangle of Shelter Island have elevated levels of septic contamination approaching and, in some cases, exceeding potability limits.
The WAC strongly advises residents in the center to consider having their own wells regularly tested for water quality since high nitrate levels and associated contaminants can affect your health. Please consider sharing the results of your tests with the WAC and town.
Comprehensive water quality tests can be requested by mail for $100 using this form: https://suffolkcountyny.gov/Departments/Health-Services/Environmental-Quality/Water-Resources/Private-Well-Water-Testing-Program
- Well Level Report for December 2025 (PDF)
- Well Level Report for November 2025 (PDF)
- WAC September 2025 COVER PAGE Report (PDF)
- Well Level Report for August 2025 (PDF)
- Well Level Report for JULY 3, 2025 (DRAFT) (PDF)
- Well Level Report for May 2025 (PDF)
- Well Level Report for April 2025 (PDF)
- Well Level Report for March 2025 (PDF)
- Well Level Report for February 2025 (PDF)
- Well Level Report for January 2025 (PDF)
- April 2023 WAC Water Level Report (DRAFT) (PDF)
- February 2023 WAC Water Level Report (DRAFT) (PDF)
- June 2023 WAC Water Level Report (DRAFT) (PDF)
- March 2023 WAC Water Level Report (DRAFT) (PDF)
- May 2023 WAC Water Level Report (DRAFT) (PDF)
- Shelter Island WAC Water Advisory Levels-Drought Status (DRAFT) 05-31-2023 (PDF)
- Comprehensive Plan - Chapter 10 - Utilities Infrastructure (PDF)
- Comprehensive Plan - Chapter 7 - Natural Resources and Water Quality 09-28-2023 (PDF)
- Expanded Environmental Assessment-Supplemental Analysis - Proposed TOSI Waster Treatment (March 2023) P.W. Grosser (PDF)
- SI - Proposed Wastewater Treatment Plan - Modeling Assessment (Sole Source Consulting) 03-19-2023 (PDF)
- SI - Wastewater Management - Report Addendums (Lombardo Assoc.) 03-21-2023 (PDF)
- WAC - Public Water Letter (DRAFT) 05-12-2023 BJ (PDF)
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Jessica Montgomery
ClerkPhone: 631-749-0758
Related Documents
- DROUGHT POLICY adopted September 2025 (PDF)
- Irrigation Brochure (PDF)
- Homeowners Guide to Fertilizer and Lawn Care (PDF)
- Leggette Brashear 2014 Watershed Report (PDF)
- WAC Presentation 10-09-24 (PDF)
- WAC Presentation: High Nitrogen Center Triangle Testing 5-5-24 (PP)
- SC Department of Health Services Presentation 4-15-24
- A Conservation Agenda for Shelter Island Residents Understanding our Aquifer, Resources, Environmental Threats and What You Can Do. (PDF)
- A Practical Guide for Near Shore Living (PDF)
- Earth Day 2021 - LI Water Policy Overview - History, Current Efforts, and Charting the Course Ahead (PDF)
- Ground and Surface Water Management Plan - One Island One Water (PDF)
- Ground and Surface Water Management Plan (PDF)
- USSG Shelter Island Ground Water Presentation (PDF)
- W.A.C. Mission Statement (PDF)
- Water Supply and Challenges in Suffolk County (PDF)
- Water Testing Notification to Center Residents (PDF)
- Nitrate well testing zone map (PDF)