Contents
- Option 1: Police Department Medication Kiosk (24/7)
- What's Accepted — and What's Not
- Liquid Medications: The Workaround
- Needles and Sharps
- HHW Drop-Off Center
- DEA Take Back Day
- Common Mistakes
- Tex's Take
- FAQ
San Marcos is one of the few cities in Texas where medication disposal does not require you to plan your week around it. The city runs a 24/7 drop-off kiosk, costs nothing, and asks no questions. Most people just don't know it exists.
Flushing medications down the toilet contaminates the San Marcos River. Tossing them in the trash puts them within reach of kids, pets, or anyone going through your bin. Neither is a good option in a city built around one of the clearest spring-fed rivers in Texas.
Here is exactly what you can drop off, where, and what to do with the stuff they won't take.
Option 1: San Marcos Police Department Kiosk (Best Option)
This is your go-to. The San Marcos Police Department and the city's Resource Recovery Division run a secure medication drop-off kiosk in the front lobby of the police station. It is open around the clock — walk in at 2 a.m. on a Tuesday if that works for you.
| Detail | Info |
|---|---|
| Address | 2300 IH 35 S, San Marcos, TX 78666 |
| Phone | 512-753-2108 |
| Hours | 24/7 — lobby always open |
| Cost | Free |
| Anonymous | Yes — no ID, no forms |
| Residency required | No — open to all |
The city asks one thing before you drop off: mark out your personal information on the prescription label but leave the medication name visible. A black marker takes five seconds. The lobby is monitored with video cameras, and medications are removed and incinerated on a regular schedule.
What the Kiosk Accepts — and What It Does Not
Prescription medications, over-the-counter medications, prescription ointments, prescription patches, pet medications, medication samples
Needles and sharps (go to HHW facility instead), liquid medications (see workaround below), medications from businesses or clinics
Pet medications are accepted — that is worth knowing if you have a dog or cat on a long-term prescription that has expired or changed.
Liquid Medications: The City's Workaround
The kiosk does not take liquids. The city's official guidance for liquid medications is straightforward: mix the liquid with dirt, used coffee grounds, or cat litter. Put the mixture into a sealed bag or container. Trash it. Mark out your personal info on the original bottle and recycle the empty bottle separately.
This keeps the medication out of the water supply and makes it unrecognizable in the trash. Do not pour it down the drain or into the toilet — San Marcos sits on the Edwards Aquifer recharge zone and the Blanco River watershed. What goes down the drain here has a shorter trip to the water table than most Texas cities.
Needles and Sharps
Needles do not go in the kiosk. They go to the Household Hazardous Waste facility at 634 E Hopkins — the same location as the HHW drop-off. Call ahead to confirm current sharps acceptance before making the trip.
HHW Drop-Off Center (Needles and General Hazardous Waste)
If you are already planning a trip to dispose of other household hazardous items alongside medications, the HHW facility covers both. It operates on a limited schedule, so plan accordingly.
| Detail | Info |
|---|---|
| Address | 634 E Hopkins, San Marcos, TX 78666 |
| Phone | 512-393-8412 |
| Hours | Fridays noon-3:30 pm, Saturdays 8 am-12 pm |
| Cost | Free |
| Eligibility | San Marcos and Hays County residents only |
| Limit | 300 lbs per vehicle per day |
| TCEQ permit | Yes — confirmed |
The same facility doubles as a Reuse Center — residents can drop off usable items and pick up materials others have left. Worth knowing if you have more than medications to deal with. The process for other hazardous household items like old paint disposal follows a similar HHW drop-off model across Texas cities.
DEA National Prescription Drug Take Back Day
The DEA runs a national take-back event twice a year — April and October. The 30th event took place April 25, 2026, with nearly 4,200 locations nationwide. The next event will be in fall 2026; exact date not yet announced as of May 2026.
For San Marcos residents, the police kiosk is available year-round, so Take Back Day is more of a backup than a primary option. The DEA also maintains a year-round authorized collector locator at deadiversion.usdoj.gov — use it to find pharmacy drop-off locations near you if the police station is not convenient.
Common Mistakes
- Flushing medications — contaminates the Edwards Aquifer recharge zone. Don't.
- Tossing bottles in the trash with the label intact — personal info visible, medication accessible. Mark it out first.
- Bringing liquids to the police kiosk — they won't take them. Use the cat litter method instead.
- Bringing needles to the police kiosk — those go to the HHW facility at 634 E Hopkins.
- Assuming the HHW facility keeps regular hours — it runs Fridays and Saturdays only. Check before you drive over.
- Bringing medications from a clinic or business — the kiosk is for household use only.
Tex's Take
San Marcos actually did this right. A 24/7 kiosk at the police station costs the city almost nothing to run, and it removes the single biggest barrier to proper medication disposal — the requirement to show up during business hours. Most HHW programs in Texas are Friday-Saturday-only operations. People forget, skip the trip, and the medications end up in the trash or the toilet.
The liquids rule is the one gap. Mixing cough syrup with coffee grounds and sealing it in a bag is fine in practice, but it requires residents to know about it. Most don't. That's the only thing worth flagging — otherwise, this is one of the cleaner systems in a Tier 3 Texas city.
FAQ
Can I drop off medications at the San Marcos Police Department without ID?
Yes. The kiosk is anonymous — no ID, no forms, no questions. The city asks only that you mark out your personal information on the label before dropping off.
Can I flush old medications in San Marcos?
No. San Marcos sits on the Edwards Aquifer recharge zone. Flushing medications is one of the faster ways to introduce pharmaceutical compounds into the local water supply. Use the police kiosk or the liquid workaround instead.
Does the San Marcos medication kiosk accept pet prescriptions?
Yes. Pet medications are explicitly listed as accepted at the police department kiosk. Same process — mark out personal info, leave the medication name visible, drop in the kiosk.
Where do needles go in San Marcos?
Needles and sharps are accepted at the HHW Drop-Off facility at 634 E Hopkins, open Fridays noon to 3:30 pm and Saturdays 8 am to noon. Call 512-393-8412 before your trip to confirm sharps acceptance on your planned day.
What do I do with liquid medications in San Marcos?
Liquid medications are not accepted at the police kiosk. Mix the liquid with dirt, cat litter, or used coffee grounds, seal it in a bag, and put it in the trash. Mark out your personal info on the original bottle and recycle the empty container.
Is medication disposal in San Marcos free?
Yes. Both the police kiosk (24/7) and the HHW facility (Fridays and Saturdays) are free for residents. No fees at either location.
The police kiosk at 2300 IH 35 S is your fastest option — no schedule to work around, no fees, no paperwork. Liquids and needles need a separate trip, but for everything else, the kiosk handles it. If you are clearing out a medicine cabinet that also has batteries or other hazardous items, check the guides on household battery disposal and car battery disposal in Texas — the rules are different for each.
Data last verified May 2026 against official City of San Marcos solid waste and police department sources. Hours, accepted items, and facility availability can change without notice. Call 512-753-2108 (police kiosk) or 512-393-8412 (HHW facility) before making a trip.
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