The Division of Environmental Quality (DEQ) conducts comprehensive programs that protect Suffolk County residents against adverse environmental factors. DEQ programs also preserve and enhance the generally high quality of the Suffolk County environment.

The major programs of the Division of Environmental Quality are groundwater and drinking water protection, wastewater management, toxic and hazardous materials pollution control, monitoring and laboratory analyses, enforcement of regulations, and environmental management studies and programs for groundwater and surface waters, including related ecological issues. These programs are managed through the five offices of the division: Water Resources, Pollution Control, Wastewater Management, Ecology, and the Public and Environmental Health Laboratory.

The Division’s Board of Review hears requests for variances and waivers, meeting on the third Thursday of every month, with the exception of December, when the meeting is on the second Thursday of the month. A listing of each month’s scheduled hearings may be obtained by contacting the division at 852-5800. On alternate Thursdays, voting for previous hearings may be recorded.

Click here for the Air Monitoring Evaluation Of Selected Yard Waste Management Facilities In Suffolk County.

Click here for the Suffolk Comprehensive Water Resources Management Plan

Alternative On-Site Wastewater Treatment Systems Study

As part of the implementation of the Suffolk County Comprehensive Water Resources Management Plan, Suffolk County has begun a formal evaluation of innovative/alternative onsite sewage disposal systems for nitrogen removal capability. The systems range from individual home systems to small plants capable of servicing up to 100 dwelling units (30,000 gallons per day).
Wastewater Treatment Study Overview
Technnology Assessment
Task Report - Review of Standards and Regulation