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

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. 

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 information. The IWMA reserves the right to provide information to County Environmental Health to verify your compliance with CESQG regulations.

Businesses With Universal Waste, Used Oil/Latex Paint, EWaste

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 motor oil, latex paint and e-waste.

Universal Waste Form 

Payment Instructions

If you prefer a printed form, download the Universal Waste and Used Oil/Latex Paint Form, and return it by email to [email protected].

Businesses With Hazardous Waste

Businesses are permitted to dispose of up to 27 gallons or 220 pounds of hazardous waste per calendar month.

CESQG Hazardous Waste Form

Payment Instructions
*Please Note a $25 Minimum Charge Applies.  

This form requires an EPA ID Number.  If you do not have an EPA ID Number, please contact the Environmental Protection Agency (EPA) at (800) 618-6942.  

If you prefer a printed form, download the CESQG Waste Inventory and Certification Form and return it by email to [email protected].

After your form has been approved, bring the inventoried waste form 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 1 pm – 3 pm
Map & Directions

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


Payment Instructions

The SLO County IWMA accepts credit card, and check payments only.

Once your form is approved, you will receive a separate email with an invoice. At this time you may choose to either pre-pay with a credit card or to bring a check with you at your appointed drop-off time.

  • To pay by credit card select the Pay Now button and enter your credit card information. Print your receipt and bring it along with your approved form at your appointed drop-off time.
  • To pay by check: bring your check, made out to SLO County IWMA, along with your approved form at your appointed drop-off time.

All payments are due in full at the time of drop-off.

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


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