Los Angeles County Public Works - Industrial Waste
Environmental Programs public counter located on the 3rd floor of the Annex building in Alhambra is open to the public. In order to maintain facility capacity we have implemented an online appointment system. Masks are highly recommended at all times for all visitors and staff. Click here to schedule an in person appointment or call (626) 458-3517 for questions or assistance.

For Industrial Waste questions or submissions, email us at iw@pw.lacounty.gov. You can also mail submissions to:

Los Angeles County Public Works
Environmental Programs Division
900 S. Fremont Ave
Alhambra, CA 91803

If you have any questions, contact the Environmental Programs Public Counter at (626) 458-3517, Monday to Thursday, 8 am to 4 pm.


The Public Works Industrial Waste Unit issues the following types of approvals:
Industrial Waste Approval: Industrial wastes include all waste substances, liquid or solid, except domestic sewage, from any manufacturing, processing, institutional, commercial, or agricultural operation. An industrial waste approval may also require the installation of stormwater treatment devices. This approval requires four to six sets of plans. The number of plans required is determined by the type of operation and the location of the facility. For further information, browse our Obtaining Clearance page or contact this office.
Low Impact Development (LID): LID is a design strategy using naturalistic, on-site Best Management Practices to lessen the impacts of development on stormwater quality and quantity. The LID Manual can be viewed at Public Works' Stormwater Quality Website. All submittals shall be initiated through the Building Official.
In accordance with EPA regulation 40 CFR Part 441, all dental offices that place or remove amalgam must operate and maintain an amalgam separator and must not discharge scrap amalgam or use certain kinds of oxidizing and/or acidic cleaners.
The County regulates industrial wastewater discharges from dental offices and clinics into the County's sewer system and obtaining industrial waste discharge permit is required. One component of this permit is submitting the One Time Compliance Report.
Domestic Waste Clearance: Domestic wastes include any sanitary waste derived from ordinary living processes without special treatment into the public sewer or private disposal system. Domestic wastes include wastes originating from restrooms, lavatories, drinking fountains, hand sinks, etc. This approval requires two sets of plans. An operating permit will not be issued for this type of approval.

Managed by the Los Angeles County Public Works, Environmental Programs Division
Toll Free Phone Number: 1(888) CLEAN LA
Clean LA Home| Clean LA FAQ| About Clean LA| Clean LA Site Index| Contact Clean LA