Ask us questions Call the hotline or send us your questions to learn more about hazardous waste. Call the Recycling Hotline to get live assistance, Monday through Friday, 9am – 5pm. (408) 924-5453, or (800) 533-8414.Visit recyclestuff.org to find a recycling or reuse company. Contact Information Household Hazardous Waste (408) 299-7300 [email protected] hhw.santaclaracounty.gov