| Phone Number: | (603) 271-3503 |
| Mailing Address: PO Box 95 Concord, NH 03302-0095 |
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Street Address: |
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| Regional Offices | |
| Emergency Phone Numbers | |
| Program Areas | |
| Staff List (search by department) | |
| Email Addresses for NHDES Bureaus | |
| Phone Numbers by Subject | |
| Toll-Free Phone Numbers | |
| Hazardous Waste Compliance Hotline | 1-866-HAZWAST |
| Ozone Hotline | (800) 935-SMOG |
| Used Oil Recycling | 1-888-TAKEOIL |
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