Household Hazardous Waste DropoffHHW Dropoff
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City of San Marcos Household Hazardous Waste Drop-Off

634 E. Hopkins, San Marcos, TX

Call ahead. Hours, fees, residency rules, appointments and accepted materials change. Check the official page or call before you go. Never mix chemicals, and keep products in their original containers. Open the official source page.

Type
Permanent drop-off
Address
634 E. Hopkins, San Marcos, TX (map pin at street level)
County
Hays County
Hours
Fridays, noon to 3:30 p.m., and Saturdays, 8:00 a.m. to noon.
Accepted
Paint; Used motor oil; Oil filters; Antifreeze; Household batteries; Car batteries; Fluorescent bulbs / CFLs; Pesticides & garden chemicals; Pool chemicals; Propane cylinders; Household chemicals & cleaners; Other household hazardous waste
The drop-off page lists 1 lb. propane, MAPP and butane cylinders; automotive fluids and oil filters; automotive and household batteries; cleaning products; cooking oil; fire extinguishers; fluorescent lights; glues and adhesives; lawn and pool chemicals; medical sharps in a proper container; nail polish; paint and thinners; pesticides and herbicides; smoke detectors; solvents and degreasers; mercury thermometers; and wood finishes.
Not accepted
Ammunition; Appliances; Cell phones; Commercial waste; Compressed gas larger than 1 lb.; Containers larger than 5 gallons; Dried paint cans; Electronics; Explosive materials; Helium gas cylinders/tanks; Medical waste (except sharps); Pharmaceuticals; Radioactive materials; Random liquids in steel drums; Tires; TVs and computers
Limits
The facility page lists a 300-pound limit per vehicle per day, or the equivalent of thirty 1-gallon paint cans. The drop-off page lists a maximum of six 5-gallon buckets of paint per visit, a 12-quart limit on oil, fuel or antifreeze, three car batteries per visit, and two fire extinguishers per household.
Appointment
Not required, per the official page
Who can use it
San Marcos and Hays County residents only. Only waste from residential households is accepted; business waste is not accepted.
Fees
Not stated in our source — check before you go.
Phone
512-393-8412
Notes
The facility overview at https://www.sanmarcostx.gov/352/Household-Hazardous-Waste-Facility prints the same 634 E Hopkins address, the Friday and Saturday hours, the San Marcos and Hays County residency rule, and the 300-pound limit. No ZIP code is printed for the drop-off itself.

Source: City of San Marcos

Last checked: — Read directly from the official source page on 2026-11-09: confirmed the household hazardous waste service, address, hours, accepted materials, residency/ID rules, phone, appointment rules, quantity limits; fees, event dates, service area not stated on the page; other fields not re-checked.

Source and reuse terms: Public government information (facts); linked to the official source page

Report a problem or suggest an edit Opens your email app with this listing's id (tx-san-marcos-city-of-san-marcos-household-hazardous-waste-drop-off).

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