The IWMA has programs to help businesses manage their universal waste and hazardous waste.  State and Federal laws govern these programs and restrictions apply.

*** In compliance with the County’s “Shelter in Place” order IWMA Business Hazardous Waste Drop-off Centers are temporarily closed to the general public. 


To dispose of hazardous waste, fill out the appropriate form below. If you qualify to participate in the program, the approved form will be emailed back to you with instructions to bring the inventoried waste to one of the following listed below. If you do not qualify, the reason will be described on the returned form.  If you would prefer to have the forms faxed, please call (805) 782-8530.

Note: The IWMA is not a regulatory agency and cannot advise you regarding hazardous waste regulations or your current status as a Conditionally Exempt Small Quantity Generator (CESQG).  If you are unsure if the business is a CESQG or if you have questions about hazardous waste regulations, please call County Environmental Health at (805) 781-5544 for further guidance. The IWMA reserves the right to provide information to County Environmental Health to verify your compliance with CESQG regulations.


Businesses With Universal Waste and Used Oil/Latex Paint

This form is for businesses with universal waste, which includes household batteries, fluorescent lamps, sodium/metal hydride/halogen bulbs.  In addition, please use this form for used oil and latex paint.

Universal Waste – Online Form

If you prefer a printed form, download the Universal Waste and Used Oil/Latex Paint form, and return it either by email to cprice@iwma.com or by fax to (805) 782-8529.

Businesses With Hazardous Waste

This form is for businesses who qualify to participate in the Conditionally Exempt Small Quantity Generator (CESQG) Program, and who have 27 gallons or 220 pounds of hazardous waste to dispose of per calendar month.

CESQG Waste – Online Form*

*Please Note a $25 Minimum Charge Applies

This form requires an EPA ID Number.  If you do not have an EPA ID Number or don’t know if you have one, please call the Environmental Protection Agency at (800) 618-6942.  They will look up your business and give you the number.  If you don’t have one, they will issue one to you.  If you think this is a one time occurrence, they can issue you a temporary EPA ID number.

If you prefer a printed form, download the Hazardous Waste Forms and return it either by email to cprice@iwma.com or by fax to (805) 782-8529.

After your form has been approved, bring the inventoried waste at your appointment date and time to the approved location, which will be one of the locations listed below. When you bring in your waste, please have the following ready to show the on-site attendant:

How to Dispose of Waste

After your form has been approved, bring the inventoried waste at your appointment date and time to the approved location, which will be one of the locations listed below. When you bring in your waste, please have the following ready to show the on-site attendant:

1.  Your completed and approved inventory and certification form and
2.  A credit card or check for the total cost made payable to SLO County IWMA (no cash please)

Paso Robles Landfill
9000 CA Hwy. 46 East, Paso Robles, CA
Hours: Friday 1pm – 3pm
Map & Directions

Chicago Grade Landfill
2290 Homestead Road, Templeton, CA
Hours: Friday 9 am – 11 am
Map & Directions

Cold Canyon Landfill Household Hazardous Waste Facility
2268 Carpenter Canyon Road, San Luis Obispo, CA
Hours: Wednesdays 9 am-Noon
Map & Directions

Morro Bay Household Hazardous Waste Facility
160 Atascadero Road, Morro Bay, CA
Hours: Thursday 9 am – 11 am
Map & Directions

Nipomo Household Hazardous Waste Facility
509 Southland Street, Nipomo, CA
Hours: Thursday 2 pm – 4 pm
Map & Directions

If you have any questions or concerns, please feel free to contact us at (805) 782-8530


Businesses that have quantities of hazardous waste that exceeds the CESQG limits and that wish to dispose of this material all at once should call one of the private hazardous waste contractors who will pick-up all types of hazardous waste for a fee:

Asbury Environmental Services, 2100 North Alameda Street, Compton, CA 90222, 800-974-4495 (No Biohazard Waste)

BGI, 527 North Rice Avenue, Oxnard, CA 93030, 800-549-0065 (No Oil, Oil Filters, Antifreeze, or Biohazard Waste)

Clean Harbors, 880 West Verdulera Street, Camarillo, CA 93010, 805-987-9278

Industrial Waste Utilization, 5601 State Street, Montclair, CA 91763, 800-667-9278 (No Biohazard Waste)

Safety Kleen, 805-967-1448 (No Biohazard Waste)


Biohazard Waste

Medical Waste Environmental Engineers, 702 South Depot Street, Santa Maria, CA 93458, 805-925-6633

Stericycle, 866-983-7422


Motor Oil and Automotive Materials

Asbury Environmental Services, 2100 North Alameda Street, Compton, CA 90222, 800-974-4495

Evergreen Oil, 800-972-5284

Safety Kleen, 805-967-1448


Vegetable Oil – All Types

World Oil, 800-727-2879