The Industrial Waste Program is responsible for the enforcement of Federal, State, and local regulations that pertain to the quality of industrial, commercial and industrial wastewater discharged into public sewer lines. The City of Diamond Bar contracts with Los Angeles County Public Works Department for Industrial Waste Services.
Referrals & Obtaining Clearance
If you have received a referral from the Building and Safety Division or if you need to obtain clearance, you may contact the Los Angeles County Public Works Department, Environmental Programs Division at 888-253-2652.
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