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San Luis Obispo, California · County government

Environmental Health — County HHW Resources

Find household hazardous-waste receiving programs, eligibility and appointments.

Source checked October 15, 2026[1]
Go to the official website (opens in a new tab)
Website address
www.slocounty.ca.gov

Opens this office’s own website. CountyWiki does not process applications, take payments or provide personal records.

Contact details & office locations ↓
County HHW resource guide, implemented by IWMA. Facility access differs: Heritage Ranch is restricted to Heritage Ranch residents. Business disposal is a separate program.[2]

Online services & information

These links were found on official source pages. Each service is handled by the office.

HHW receiving sites — current facility hours and restrictions (opens in a new tab)[3]Official instructions

Official county referral to IWMA receiving facilities. Check each site’s HHW hours rather than general landfill hours.

Before you start

Eligibility & access · Heritage Ranch facility
The Heritage Ranch HHW facility is limited to Heritage Ranch residents. [4]
Availability · Cold Canyon HHW and e-waste
Cold Canyon HHW/e-waste receiving: Monday, Tuesday, Thursday, Friday and Saturday 8 am–3 pm. [5]

Fees

Fees are quoted only when a source document supports the amount and conditions.

Fee amounts have not been reviewed for this office.

Check the official website for its current fee schedule. No fee should be assumed to be free.

Forms & documents

Official forms and document pages for this office’s services.

Forms have not been reviewed yet. Visit the official website for the current forms and instructions.

Sources & last checked2 source pages · 9 citations

Sources were checked by an AI-assisted research process. A checked website does not mean every service or fee on it has been reviewed.

  1. [1] Household Hazardous Waste Disposal Information - County of San Luis Obispo (opens in a new tab)

    County / official waste program · Waste service — 06079
    Source reviewed October 15, 2026

    View supporting excerpt
    This program is implemented by the San Luis Obispo County Integrated Waste Management Authority.
  2. [2] Household Hazardous Waste Disposal Information - County of San Luis Obispo (opens in a new tab)

    County / official waste program · Waste service — 06079
    Source reviewed October 15, 2026

    View supporting excerpt
    This program is implemented by the San Luis Obispo County Integrated Waste Management Authority.
  3. [3] Household Hazardous Waste Disposal Information - County of San Luis Obispo (opens in a new tab)

    County / official waste program · Waste service — HHW receiving sites — current facility hours and restrictions
    Source reviewed October 15, 2026

    View supporting excerpt
    This program is implemented by the San Luis Obispo County Integrated Waste Management Authority.
  4. [4] Household Hazardous Waste Facilities in San Luis Obispo County - San Luis Obispo County Integrated Waste Management Authority (opens in a new tab)

    County / official waste program · Waste service — Heritage Ranch facility
    Source reviewed October 15, 2026

    View supporting excerpt
    For residents of Heritage Ranch only.
  5. [5] Household Hazardous Waste Facilities in San Luis Obispo County - San Luis Obispo County Integrated Waste Management Authority (opens in a new tab)

    County / official waste program · Waste service — Cold Canyon HHW and e-waste
    Source reviewed October 15, 2026

    View supporting excerpt
    HHW & E-Waste Drop-off Hours: Monday, Tuesday, Thursday, Friday, and Saturday 8 AM - 3 PM
  6. [6] Household Hazardous Waste Facilities in San Luis Obispo County - San Luis Obispo County Integrated Waste Management Authority (opens in a new tab)

    County / official waste program · Waste service — Cold Canyon — HHW / e-waste receiving
    Source reviewed October 15, 2026

    View supporting excerpt
    2268 Carpenter Canyon Road, San Luis Obispo, CA
  7. [7] Household Hazardous Waste Facilities in San Luis Obispo County - San Luis Obispo County Integrated Waste Management Authority (opens in a new tab)

    County / official waste program · Waste service — Cold Canyon facility
    Source reviewed October 15, 2026

    View supporting excerpt
    (805) 549 – 8332
  8. [8] Household Hazardous Waste Facilities in San Luis Obispo County - San Luis Obispo County Integrated Waste Management Authority (opens in a new tab)

    County / official waste program · Waste service — Nipomo — HHW / e-waste receiving
    Source reviewed October 15, 2026

    View supporting excerpt
    509 Southland Street, Nipomo, CA
  9. [9] Household Hazardous Waste Facilities in San Luis Obispo County - San Luis Obispo County Integrated Waste Management Authority (opens in a new tab)

    County / official waste program · Waste service — Nipomo — HHW / e-waste receiving
    Source reviewed October 15, 2026

    View supporting excerpt
    Saturday 11 AM – 3 PM
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