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.

Industrial Waste Disposal Permits

Industrial Waste Disposal Permits (IWDPs) are subject to routine inspections and annual fees. If a violation notice is issued by one of our field inspectors, a full reply to the items requested must be submitted within the time allotted by the notice. If corrective action cannot be completed within the due date, the inspector who issued the notice must be contacted directly. Field inspectors are available for phone calls, Monday through Friday, 8 a.m. to 9:30 a.m. A listing of our field office and headquarters facilities is included in our contact page.

An IWDP is terminated when the person owning or operating the premises has filed a written request, and a field inspection has confirmed that all industrial wastewater producing operations have ceased. All pretreatment facilities must been permanently removed or closed before a permit can be canceled. If the pretreatment facilities are to be maintained for future use, a non-use permit must be obtained.


Managed by the Los Angeles County Public Works, Environmental Programs Division
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