NHDES provides several ways for the public to get in touch with the right people.

Staff Directory

Looking for someone in particular? Search our staff directory by name, topic or program.

The main headquarters for NHDES is at 29 Hazen Drive in Concord, NH, 03301; (603) 271-3503. However, NHDES also maintains several regional offices to accommodate the public's need for various services, and it operates a regional wastewater treatment facility and training center based in Franklin administered by the Winnipesaukee River Basin Program. 

NHDES maintains a regional office at Pease International Tradeport in Portsmouth that addresses the areas of septic systems, wetlands, coastal watershed management, waste management and erosion control. 

NHDES Portsmouth Regional Office
Pease International Tradeport 
222 International Drive, Suite 175
Portsmouth, NH 03801 
(603) 559-1500 


Spill Reporting Hotline:
(603) 271-3899

(603) 223-4381, after hours

Hazardous Waste Compliance:

Ozone: 1-800-935-SMOG

Used Oil Recycling: