Picture of Lake Zoar

Ensuring boating safety & water quality.

The Lake Zoar Authority is a multi-town organization consisting of representatives from the four towns that border the lake - Monroe, Newtown, Oxford, and Southbury. The Lake Zoar Authority is tasked with the goals of improving water quality and promoting safe boating on the lake.


2018 Fall Draw Down

October 10, 2018

Lake Zoar will have the water level lowered for the fall draw down from November 9th through November 16th.

November LZA Meeting Location

October 10, 2018

The November 6th LZA monthly meeting will take place at The Newtown Congregational Church located at 14 West St, Newtown, CT 06470.

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2017 Lake Zoar Pre and Post-Treatment Aquatic Plant Survey Results

April 17, 2018

The 2017 Pre and Post-Treatment Aquatic Plant Survey Results were presented to the Lake Zoar Authority by Northeast Aquatic Research. It indicates weed survey results both prior to, and post chemical weed treatment on Lake Zoar during 2016. The reported findings will allow the LZA to assess the effectiveness of chemical weed treatments on the lake as well as assist planning for future weed treatment applications.

2015-2016 Fiscal Year Report

December 8, 2016

The Lake Zoar Authority's annual fiscal year report for 2015-2016 is now available.

Water Quality

Water quality is a primary area of focus for the Lake Zoar Authority. The LZA performs regular water testing for eColi and other conditions at several locations throughout the lake. The results are sent to the four member towns and the appropriate health departments. The towns and/or DEP also test water at public beaches.

The LZA’s role is information gathering. The LZA also participates in water studies to learn more about the changing conditions of the water. In addition to quality, the LZA has an extensive program to control the growth of invasive weeds and as funds allow the most infested areas are treated with an herbicide that is used in over 150 lakes in CT each year.

Lake Patrol

The Lake Zoar Authority also supports the operation of a marine patrol enforcement unit with two LZA-owned boats. The marine patrol is radio equipped, with constant shore contact. To reach the patrol by phone, contact your local town police.


An objective of the LZA is to be a resource for the users of the lake. A primary means of education is the safety inspections performed throughout the summer by the marine patrol. The LZA plans to host more safety awareness days, coordinate with the Coast Guard Auxiliary for inspections at boat launches and to use this website to help all users of the lake understand more about safe boating and responsible use of the lake.

Remember, Connecticut residents are required to have a Connecticut Safe Boating Certificate or Certificate of Personal Watercraft Operation on their person when operating a boat/PWC in CT. Individuals must successfully complete an approved basic boating course to obtain a certificate. (There are many sources for the safe boating classes including the USCG Auxiliary, see link below for more information.)