Leftover cooking oil from frying or sauteing at home must never be poured into sinks, toilets, or food waste buckets. The correct procedure is to let the oil cool down and pour it into a clean, lidded bottle sealed tightly: in Taipei City, label the bottle "Used Cooking Oil" and hand it over to municipal resource recycling trucks; in New Taipei City, hand it to cleaning squad crew members during scheduled garbage collection hours. Taipei City Department of Environmental Protection specifies that daily volumes under 30 kg can be handed over to cleaning teams for free recycling; New Taipei City Environmental Protection Department similarly accepts it via cleaning teams, neither allowing it to be bagged in designated trash bags as general waste. For minor residue on pans or dishes, wipe with paper towels before washing and discard towels into general trash.
Notice: Taipei City Department of Environmental Protection explicitly instructs: "Do not place into food waste". Never hand waste oil to uncertified collectors; lawful oil recycling contractors in Taipei carry official credentials issued by the environmental department, verifiable by scanning the QR code on their worker ID. Recycling regulations follow the latest announcements from environmental protection departments in Taipei and New Taipei.
How to Hand Over Waste Oil in Taipei and New Taipei
| Item | Taipei City | New Taipei City |
|---|
| Classification | Recyclable item. Environmental FAQ lists "General Recyclables"; active sorting schedule (updated 115-10-29) categorizes cooking oil under "Other Recyclables" | Recyclable item: "Animal and vegetable fats generated from food processing and culinary cooking" |
| Packaging Method | Store in bottles and clearly label "Cooking Oil" | Pour cooled oil into clean containers and seal tightly; recycling portal notes "pack securely in containers" |
| Handover Target | Municipal resource recycling trucks | Hand to cleaning squad workers during announced garbage collection hours |
| Collection Days | Sorting table lists Other category on Monday, Tuesday, Thursday, Friday, and Saturday; suspended on Wednesday and Sunday | Per district collection schedules, verifiable on New Taipei Waste Collection Portal |
| Prohibited Actions | Do not pour into food waste | Do not pour down sinks or drains (New Taipei Water Resources Department) |
| Service Fees | Free collection by cleaning squads for daily volumes under 30 kg | Official FAQs mention no fee; handed to cleaning teams for recycling |
A slight discrepancy exists across Taipei announcements: food waste FAQs (updated Year 115 / 2026) classify cooking oil as "General Recyclables" (collected Tuesdays, Thursdays, Saturdays); however, the active recycling table (updated 115-10-29 / October 29, 2026) and August 112 guide place it under "Other Recyclables" (collected Mon, Tue, Thu, Fri, Sat). Both versions direct residents to resource recycling trucks. Practical advice: Tuesdays, Thursdays, and Saturdays overlap under both rules, making those days safest. Cleaning squads cannot reject sorted recyclables brought on alternate collection days; see How to Sort Recyclables in Taipei and New Taipei.
Note: an April Year 113 press release suggested pouring excess fat into food waste, but current guidance (updated 115-08-06) explicitly states "do not place into food waste". Follow current rules in Food Waste Sorting Rules in Taipei and New Taipei.
Why Pouring Down Sinks and Toilets Causes Disasters
The Sewerage Systems Office, Public Works Department of Taipei City Government explains that kitchen sewage contains high fat levels; pouring oil down drains forms grease scale that saponifies with detergent residues, representing the number one cause of blocked sewer piping and wiring. Statistics published by New Taipei Water Resources Department on December 29, 2025: out of 3,231 incident reports received that year, 1,954 required professional clearing; fat buildup accounted for 1,932 cases, vastly exceeding trash (9 cases) and hair (3 cases). Cooled fats solidify, bonding with alkaline minerals to create rock-hard soap crusts narrowing drain cross-sections.
Sewerage Systems Office recommends the 3-step prevention rule:
- Intercept (截): Wipe greasy pans and plates with napkins before washing, disposing of oily napkins in general trash; store bulk waste oil for recycling trucks.
- Filter (濾): Install fine mesh strainers over sink and bathroom drains to catch food scraps and hair.
- Avoid (避): Never flush food waste, vegetable peelings, or kitchen rags down sinks or toilets.
For municipal public sewer clogs outside residences, Taipei City provides a 24-hour clearing hotline at 02-2596-8603 or 02-2596-8631. For indoor kitchen drain clogs, see Kitchen Drain Unclogging and Hydro-Jetting Guide.
Handling Different Household Oil Scenarios
| Scenario | Recommended Action | Regulatory Basis |
|---|
| Large pot of deep-frying oil | Allow to cool, pour into lidded bottle, seal tightly, and hand to recycling trucks or cleaning crews | Taipei & New Taipei environmental departments |
| Small greasy pan residue after frying | Wipe clean with paper towel, discard towel in general trash, then wash pan | Taipei Sewerage Systems Office |
| Expired unused salad oil or olive oil | Classified as waste cooking oil; bottle and recycle in identical fashion | Taipei DEP FAQ on expired seasonings and oil recycling |
| Rendered animal fats (lard, chicken fat) | New Taipei explicitly accepts all animal and vegetable culinary fats; store securely in containers | New Taipei City Recycling Information Portal |
| Small amounts of expired soy sauce or sauces | Taipei City permits small volumes to enter food waste | Taipei City Food Waste Q&A |
| Empty cooking oil plastic or glass bottles | Empty thoroughly, rinse clean, and recycle according to container material | Taipei DEP Bottle Recycling FAQ |
| Motor oil and machinery lubricant | Not cooking oil; New Taipei directs delivery to scooter repair shops or gas stations accepting motor oil | New Taipei City Recycling Information Portal |
Practical tips: repurpose empty PET bottles or glass jars using a funnel; ensure oil is fully cooled to avoid melting plastic bottles. Store sealed bottles safely before pickup, verifying caps are tight and exteriors wiped clean.
To track collection vehicle arrivals in New Taipei, check our garbage truck Real-Time Location Tracker.
Commercial Eateries & Stalls: 30 kg Daily Limits
Taipei City Department of Environmental Protection FAQs (updated 114-09-18 / September 18, 2025) specify: commercial entities generating less than 30 kg of waste cooking oil (including other waste) daily may hand it to municipal cleaning teams for free recycling, or contract with licensed waste clearance firms holding valid oil collection credentials. Licensed operators and standardized contracts can be searched via the Ministry of Environment "Clearance and Disposal Facility Service Management Information System". Non-residential entities with daily average waste and food scrap generation reaching 30 kg or more must engage private licensed waste haulers.
New Taipei City Environmental Protection Department FAQs specify that snack stalls and commercial entities producing waste cooking oil must contract with legal clearance operators, searchable via the Ministry of Environment Resource Circulation Administration portal, or contact the New Taipei Waste Clearance Commercial Association at (02) 2964-9288.
Be cautious regarding outdated penalty figures online. Older municipal enforcement pages cited pre-amendment fines under Articles 12 and 50 of the Waste Disposal Act of NT$1,200 to NT$6,000; the active text of Article 50 (amended July 15, Year 115 / 2026) imposes fines between NT$1,200 and NT$100,000, with orders for improvement within time limits and consecutive fines for non-compliance.
Frequently Asked Questions
Can I pour waste cooking oil down the toilet?
No. Sewerage authorities explain oil solidifies along pipe walls, saponifying with detergents into severe obstructions; New Taipei sewer statistics cite grease as the single leading cause of sewer clogs.
Can used cooking oil be poured into food waste?
Taipei City Department of Environmental Protection explicitly instructs residents not to place waste cooking oil into food waste; cool and seal it in bottles labeled cooking oil for recycling trucks. In New Taipei, hand sealed containers to cleaning crews.
What containers should I use to store cooking oil?
Taipei specifies bottles labeled cooking oil; New Taipei requires clean, tightly sealed containers. Clean plastic PET bottles or glass jars with leakproof screw caps work perfectly.
Can I give waste oil to independent street collectors?
Taipei environmental authorities issue certified credentials with QR codes to legitimate waste oil collectors. Handing oil directly to municipal cleaning crews is safest for domestic households.
Last updated: 2026-11-01
This article is compiled from public information by SOSfix editors for general guidance; consult Taipei City Department of Environmental Protection (02-2720-8889 ext 7286), New Taipei City Environmental Protection Department, or local district cleaning teams for individual cases.
Sources and References
- Taipei City Department of Environmental Protection FAQ: Can Expired Food, Salt, or Oil Be Recycled? (Updated 115-01-26, verified 2026-11-01): General recyclable category, bottle labeling, ban on food waste, commercial 30 kg rule.
- Taipei City Department of Environmental Protection: Household Food Waste Complete Recycling Q&A (Updated 115-08-06, verified 2026-11-01): Ban on cooking oil in food waste, small amounts of seasonings allowed.
- Taipei City Department of Environmental Protection FAQ: Who Can Collect Waste Cooking Oil? (Updated 114-09-18, verified 2026-11-01): Free squad collection under 30 kg daily, MOENV database lookup.
- Taipei City Department of Environmental Protection: Waste Cooking Oil Enforcement (Updated 115-05-06, verified 2026-11-01): Official worker ID badges, QR code verification, statutory basis.
- Taipei City Department of Environmental Protection: Recycling Schedule Leaflet (PDF dated 112-08-21, verified 2026-11-01): Cooking oil categorized under other recyclables on Mon/Tue/Thu/Fri/Sat.
- Taipei City Department of Environmental Protection FAQ: Discharge Rules for Refuse and Recyclables (Updated 115-10-20, verified 2026-11-01): Wednesday and Sunday collection suspensions.
- Taipei City Department of Environmental Protection FAQ: Are Recyclables Refused on Alternative Days? (Updated 115-10-20, verified 2026-11-01): Mandatory acceptance of sorted items, general recyclables on Tue/Thu/Sat.
- Taipei City Department of Environmental Protection: Recycling Categories and Schedule (Updated 115-10-29, verified 2026-11-01): Waste oil placed under other items collected Mon/Tue/Thu/Fri/Sat.
- Taipei City Department of Environmental Protection FAQ: Handling Liquid Residues in Bottle Recycling (Updated 115-10-16, verified 2026-11-01): Emptying, rinsing, and flattening containers before recycling.
- Taipei City Government Press Release: Do Not Dump Food Waste Grease (Published 113-04-19, verified 2026-11-01): Historical reference to pouring fat into food waste.
- Taipei Public Works Department Sewerage Systems Office Press Release: 4 Steps to Clear Grease (Published 114-01-10, verified 2026-11-01): Saponification, intercept/filter/avoid rules, resource truck handover, 24h hotline.
- New Taipei City Government Municipal News: Do Not Use Drains as Trash Bins (Published 2025-12-29, verified 2026-11-01): 3,231 reports, 1,954 clearings, 1,932 grease obstructions, soap scale formation.
- New Taipei City Environmental Protection Department FAQ: Household Waste Cooking Oil (October 8, 2018, verified 2026-11-01): Cooling, pouring into clean containers, handing to cleaning staff.
- New Taipei City Environmental Protection Department FAQ: Commercial Waste Cooking Oil (October 15, 2018, verified 2026-11-01): Retaining licensed haulers, MOENV lookup, association contacts.
- New Taipei City Environmental Protection Department Recycling Portal: Recyclable Items List (Updated 2026-07-28, verified 2026-11-01): Animal and vegetable fats in containers; mineral lubricant disposal.
- Laws and Regulations Database: Waste Disposal Act (Amended July 15, Year 115 / 2026, verified 2026-11-01): Article 12 municipal classification rules, Article 50 fines of NT$1,200 to NT$100,000.
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