MDE Numbers to Know

Emergency Numbers

To report ​an environmental emergency, please call (866) 633-4686.
 
Concern​ Days Nights/
Weekends
Air Pollution ​Violations 410-537-3215 866-MDE GO TO
Fish Kills and Algae Blooms 800-285-8195 866-MDE GO TO
Hazardous Material & Oil Spills 866-633-4686 866-MDE GO TO
Mining 410-537-3557 866-MDE GO TO
Public Sewer Leaks/Overflows 410-537-3510 866-MDE GO TO
Public Water Supply Problems 410-537-3706 866-MDE GO TO
Radiation Accidents or Safety Violations 410-537-3300 866-MDE GO TO
Sediment, Wetland 410-537-3510 866-MDE GO TO
Underground Tank Leaks 410-537-3442 866-MDE GO TO


Air and Radiation Administration

Director 410-537-3255
Air Quality Compliance​
410-537-4225
Ambient Air Monitoring 410-537-3280
Air Quality Permit 410-537-3230
Air Quality Planning 410-537-4219
Asbestos​​
410-537-3200
Climate Change 410-537-3094
Mobile Sources 410-537-3270
Radiological Health 410-537-3300


Land and Materials Administration

Director​
410-537-3304
Anim​al Feeding Operations (CAFOs and MAFOs)
410-537-3314
​​Food Diversion Law​
​410-537-3314
Hazardous and Medical Waste Information 410-537-3314
Lead Poisoning Prevention, 1-800-776-2706 410-537-4199
Mine Operations Permitting (Coal) 301-689-1440
Oil Control 410-537-3442
Recycling 410-537-3314
Scrap Tire Licensing 410-537-3314
Solid Waste, Scrap Tire and Sewage Sludge Complaints 410-537-3315
Sewage Sludge Permits 410-537-3314
Solid Waste Permits 410-537-3315
Brownfields/Voluntary Cleanup 410-537-3437
Community Right to Know Information 410-537-3800


Water and Science Administration

Director 410-537-3567
Financial Assistance Programs 410-537-3574
Individual Wells 410-537-3784
Inspection and Compliance
Days​​​
Nights/Weekends

410-537-3510
866-MDE GO TO
Sediment, Stormwater & Dam Safety Program 410-537-3543
Water Supply Program 410-537-3702
Sewage Disposal Systems 410-537-3778
Wastewater Permit Program 410-537-3599
Wetland Permitting
Tidal
Non-Tidal
 
410-537-3837
410-537-3745
Regulatory Services 1-800-876-0200
TMDL 410-537-3902
Public Bathing Beaches 410-537-3906
Environmental Assessment & Standards Program 410-537-3906
Shellfish Waters 410-537-3906
Water Quality Monitoring 443-482-2700
See:WSA Numbers To Know

 

 

24-Hour Information​

Daily Air Quality Report (Recording) 410-537-3247
Shellfish Waters: Information onConditional Re​​​strictions (Recording) 800-541-1210


General Numbers

Information
Toll Free​
410-537-3000
800-633-6101
Environmental Justice Program 410-537-3471
Minority Business Enterprise Program 410-537-3964
Office of Communications 410-537-3003
Public Information Act Requests 410-537-4120


MDE Field Offices

Central Maryland
Baltimore
Annapolis​

410-537-3000
443-482-2700
Western Maryland
Frostburg
Hagerstown

301-689-5756
301-665-2850
Eastern Shore
Cambridge

410-901-4020


County Health Services

County​ Daytime Nightime
Allegany 301-759-5040  
Anne Arundel 410-222-7050  
Baltimore City 410-396-4422 410-396-3100
Baltimore County 410-887-3733  
Calvert 410-535-3922  
Calvert - (D.C. Area) 301-855-1557  
Caroline 410-479-8045  
Carroll 410-876-1884  
Cecil 410-996-5160  
Charles 301-609-6900  
Dorchester 410-228-1167  
Frederick 301-600-1719  
Garrett 301-334-7760 301-334-1929
Harford 443-643-0300 410-838-6600
Howard (Main Office) 410-313-2640  
Kent 410-778-1350  
Montgomery 240-777-7700  
Prince George's 301-883--5834 301-350-9735
Queen Anne's 410-758-2281  
St. Mary's 301-475-4321  
Somerset 443-523-1730  
Talbot 410-770-6880  
Washington 240-313-3400  
Wicomico 410-546-4446  
Worcester 410-632-1220  


 

You may also use the MD State Telephone Directory

 

Related Resources

 

​​​​​​​​

Logo

Human Trafficking GET HELP

National Human Trafficking Hotline - 24/7 Confidential

1-888-373-7888 233733 More Information on human trafficking in Maryland

Customer Service Promise

The State of Maryland pledges to provide constituents, businesses, customers, and stakeholders with friendly and courteous, timely and responsive, accurate and consistent, accessible and convenient, and truthful and transparent services.

Take Our Survey

Help Stop Fraud in State Government

The Maryland General Assembly’s Office of Legislative Audits operates a toll-free fraud hotline to receive allegations of fraud and/or abuse of State government resources. Previous reports have led to elimination of fraud.

More Information