Used Oil Recycling and Pickup for San Diego Businesses
Dimension collects used oil from businesses across San Diego County — waste motor, hydraulic and gear oil from shops and fleet yards, bilge and oily water from harbor and boatyard operations, and fryer oil from restaurants and food production. Container removal or on-site pumping.
San Diego produces the highest revenue per lead of any oil metro we serve, which usually means fewer, larger jobs: a boatyard clearing accumulated oily water, or a fleet yard consolidating several drums at once, rather than steady weekly volume.
This is a business service. San Diego County residents with used motor oil should use a certified collection center or the county household hazardous waste program.
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Public Sector
Oily water, mixed oil, and the county threshold worth checking first
California classifies used oil as hazardous waste even when it exhibits none of the federal hazardous characteristics. That is stricter than the federal Used Oil Management Standards alone, and it means your oil must be moved by a hauler registered with DTSC, on a manifest. A general waste hauler cannot legally take it, whatever the quote says.
The Hazardous Materials Division is San Diego County’s CUPA, and the important detail for oil generators is how its thresholds work. Storing hazardous materials is regulated at or above 55 gallons of liquid; generating hazardous waste is regulated in any quantity. A shop that never stores a full drum can still be a regulated generator the moment it produces waste oil.
Before you hire anyone, check whether you fall under the county’s off-ramp. Businesses generating less than 27 gallons or 220 pounds of hazardous waste per month, and less than one quart or 2.2 pounds of acutely hazardous waste, may be able to use the county’s household hazardous waste disposal program for small businesses. For a small marine service outfit or a single-bay shop, that can be the cheaper answer, and we would rather you took it.
Marine work brings its own wrinkle. Bilge water and oily water are usually mostly water by volume but are still regulated as hazardous waste, and they are priced by total volume rather than oil content — which surprises people. Separating oil from water on site, where you have the capacity, materially reduces what you pay to have it hauled.
| Requirement | What it means for your business |
|---|---|
| A DTSC-registered used oil hauler | Used oil is hazardous waste in California and must move on a manifest with a DTSC-registered hauler. Ask any provider to confirm registration. |
| Generation is regulated at any quantity | The 55-gallon storage threshold applies to holding hazardous materials. Generating hazardous waste has no lower threshold in San Diego County. |
| Under 27 gallons or 220 lb a month | Conditionally exempt small quantity generators may be able to use the county’s household hazardous waste program for small businesses. Check before hiring a hauler. |
| Oily water is priced by volume | Bilge and oily water are regulated as hazardous waste and charged on total volume, not oil content. On-site separation, where you have it, cuts the cost. |
| Your incentive claim depends on the hauler | CalRecycle denies used oil recycling incentive claims where a registered hazardous waste transporter was not used. |
Rules change — confirm current requirements with the agency before relying on this page.
Areas we serve around San Diego
We collect across San Diego County — boatyards and marine service operations around the harbor, Shelter Island and Point Loma, fleet and truck maintenance in Otay Mesa and Kearny Mesa, restaurant kitchens through Downtown, Hillcrest and North Park, and commercial sites through North County from Carlsbad to Escondido.
- San Diego County
- Orange County
- Riverside County
- Imperial County
Case Studies
A multi-location automotive operation needed a dependable way to clear waste motor oil, used oil filters, and oily water from its service bays without piling up drums or risking compliance gaps across states with different used-oil rules. Dimension stepped in with scheduled container removal, on-site pumping for high-volume bays, and licensed re-refining partners tailored to each site's volume.
By consolidating used oil collection under one nationwide partner, the operation eliminated overflowing storage, kept full chain-of-custody documentation and diversion reports for every pickup, and diverted thousands of gallons of waste oil into re-refined base oil — all while keeping costs well below industry averages.
What Does Oil Recycling With Dimension Look Like?
- Scheduling: Let us know the specifics of your used oil removal needs — the type of oil (cooking, motor, transmission, hydraulic, gear), approximate volume and container or tank sizes, and whether you need containers removed, pumped, or both. Pick a date and time that works for pickup. Our AI-powered quoting prices most orders instantly; complex routes get a manual quote within 1 business day.
- Provider Assignment: We match you with a reliable, certified disposal technician from our extensive nationwide network. They arrive with the right equipment — a truck for sealed container removal or a vacuum truck for on-site pumping — and handle all labeling, manifesting, and DOT-compliant transportation.
- Pickup and Recycling: Our team manages the collection and sustainable recycling of your used oil at certified facilities — cooking oil into biodiesel, motor oil into re-refined base oil. After completion you can access your diversion report in your portal, ensuring full transparency, compliance documentation, and peace of mind.
San Diego questions, answered
Do you take bilge water and oily water?
Yes. Both are regulated as hazardous waste in California even though they are usually mostly water by volume, and both move on a manifest with a registered hauler.
They are priced on total volume rather than oil content, which catches people out. If you have on-site separation capacity, using it before collection reduces what you pay meaningfully.
My shop generates one partial drum a month. Do I need you?
Maybe not. Businesses under 27 gallons or 220 pounds of hazardous waste a month, and under one quart or 2.2 pounds of acutely hazardous waste, may qualify as conditionally exempt small quantity generators and be able to use San Diego County’s household hazardous waste program for small businesses.
That is cheaper than hiring a hauler. Call the county’s Hazardous Materials Division to confirm eligibility before you commit to anything.
I store less than 55 gallons. Does that make me exempt?
No. The 55-gallon threshold applies to storing hazardous materials, not to generating hazardous waste — generation is regulated in any quantity in San Diego County.
So a shop that never has a full drum on site can still be a regulated generator. The two tests are separate and both can apply.
Can a general waste hauler take used oil?
No. California treats used oil as hazardous waste regardless of whether it shows a federal hazardous characteristic, so it requires a hauler registered with DTSC and a manifest.
If a provider cannot confirm DTSC registration, that exposure lands on you as the generator as well as on them.
How quickly can you collect in San Diego?
Typically three business days, sometimes two. Larger consolidations — a boatyard clearing accumulated oily water, a yard with several drums — can take longer to match to the right truck and facility.
Available dates show before you confirm, and larger jobs are quoted by our team within one business day.
Serving a business outside San Diego? See our nationwide oil recycling.