What Plastics Are Recyclable: Simple Resin Code Guide and Practical Steps
Introduction: Why knowing what plastics are recyclable matters
Knowing what plastics are recyclable matters because a few simple choices determine whether a bottle gets turned into new material, or ends up in a landfill. Contaminated or the wrong type of plastic can spoil an entire batch at the recycling facility, so learning a few practical rules yields big environmental and financial wins.
Start with resin codes, they are the fastest clue to what plastics are recyclable. Common items like PET bottles and HDPE milk jugs are accepted almost everywhere. Items made from PVC or polystyrene foam usually are not accepted curbside. Small tips matter, rinse food residue, flatten bulky containers when allowed, and check whether your program wants caps on or off.
This guide will decode resin codes, show quick sorting steps, and give local check tactics so you can stop guessing and recycle correctly.
The resin code system, explained in plain English
If you want to know what plastics are recyclable, the resin code system is the fastest clue. These are the little numbers inside the chasing arrows on plastic products, officially called plastic resin identification codes. They tell you the type of plastic used, and that helps predict recyclability.
Here is a quick guide, with plain examples and what to expect at curbside:
1, PET or PETE: water and soda bottles. Widely accepted by curbside programs, clean and empty.
2, HDPE: milk jugs and detergent bottles. Also commonly recycled, rinse before dropping off.
3, PVC: plumbing pipe and some food wrap. Rarely accepted, avoid putting it in curbside bins.
4, LDPE: plastic bags and some squeeze bottles. Often excluded from curbside; recycle at store drop offs.
5, PP: yogurt tubs and straws. Increasingly accepted, check local rules.
6, PS: foam cups and takeout clamshells. Usually not recycled curbside.
7, Other: mixed or specialty plastics like polycarbonate. Treat as nonrecyclable unless your center lists it.
Tip: when in doubt, check your municipal recycling website before tossing. Clean, dry items improve the odds they get recycled.
Which plastics are commonly accepted curbside
Most cities accept just a few resin codes because those streams are easy to sort, clean, and reprocess into new products. If you want to know what plastics are recyclable curbside, start with these common winners.
-
PET 1, polyethylene terephthalate
Why accepted, it is lightweight, melts predictably, and has strong market demand. Examples, clear soda and water bottles, salad dressing bottles, some clear clamshells. -
HDPE 2, high density polyethylene
Why accepted, it resists contamination and produces high quality recycled plastic. Examples, milk jugs, detergent and shampoo bottles, household cleaning containers. -
PVC 3, polyvinyl chloride
Usually not accepted curbside because it contaminates other streams and releases corrosive gases when processed. Examples, pipes, window frames, some shrink wrap. -
LDPE 4, low density polyethylene
Often excluded from curbside recycling but accepted at grocery store drop off bins, because it tangles in sorting machinery. Examples, plastic grocery bags, bread bags, produce bags, some flexible packaging. -
PP 5, polypropylene
Acceptance is growing as sorting technology improves. Examples, yogurt tubs, ketchup bottles, rigid food containers, some takeout containers. -
PS 6, polystyrene
Generally not accepted because foam is bulky and low value. Examples, foam cups, packing peanuts, foam takeout clamshells. -
Other 7, mixed and specialty plastics
Not usually accepted, these include polycarbonate and multilayer packaging.
Quick practical tips, rinse containers, remove food residue, do not bag recyclables, check your municipality for cap rules and store drop off options for plastic bags. Use the resin code to answer what plastics are recyclable in your area, because local rules vary.
Plastics often rejected or tricky to recycle
Curbside programs routinely reject certain resins, yet some of those items can still be recycled through alternative routes. PVC number 3 shows up in pipes, vinyl siding, and some window frames. It contains additives and chlorine, which gum up processing and contaminate batches. Exceptions, practical tip: construction recycling centers and vinyl manufacturers sometimes accept clean offcuts for specialty recycling.
LDPE number 4 is soft film, such as grocery bags, bread bags, and plastic wrap. These tangle in sorting machines, so many curbside programs do not accept them. Actionable move: keep clean, dry bags and drop them at grocery store bag return bins. Bundle films into one bag, never put loose film in your curbside bin.
PP number 5 appears in yogurt cups, bottle caps, and some deli containers. PP is becoming more accepted, but acceptance varies. If your local program lists number 5, rinse containers and remove labels when possible. If not accepted curbside, look for manufacturer take back or community recycling events that target polypropylene.
PS number 6 includes foam coffee cups, meat trays, and packing peanuts. Foam is bulky and low value, so recycling centers often avoid it. Specialized programs use densifiers to process foam. Practical option: reuse packing peanuts, bring foam to shipping stores that accept it, or search for TerraCycle or local foam drop offs.
Other number 7 covers polycarbonate, bioplastics, and multi layer packaging. This category is mixed, so recycling is rare in municipal streams. For multi layer pouches, check brand take back programs or mail back recyclers. Final step for all: use resources like Earth911 and your local waste authority to confirm accepted resin codes, and separate problematic plastics into a designated bin for drop off rather than risking contamination of your curbside load.
How to prepare plastics so they actually get recycled
Clean, empty plastics actually get recycled. Knowing what plastics are recyclable helps you decide which items need extra prep. Follow these simple steps to stop contamination and boost recovery.
- Empty and scrape, remove food and residue. For peanut butter or yogurt jars use a spatula and a little hot water.
- Rinse quickly, shake out, then air dry. You do not need a perfect sheen, just no loose food.
- Remove caps and pumps if your city asks, otherwise leave caps on PET bottles to keep small parts from falling through sorting machinery. Check local guidance.
- Peel off loose paper labels when they come off easily, otherwise leave glued labels.
- Separate flexible film, like grocery bags, and drop them at store collection points; do not put films in curbside bins. Flatten bottles and nest similar containers to save space.
When in doubt, search your hauler for specifics; local rules beat general advice.
Where to take plastics that curbside programs refuse
If your curbside program says no, start with local drop off centers. County transfer stations and recycling depots often accept rigid plastics, buckets, and large containers that carts refuse. Example, many U.S. counties take polystyrene blocks and rigid toys at their reuse centers, but you have to drop them off clean and free of foam debris.
Next, use store takeback programs and mail back schemes. Grocery chains like Target, Walmart and Kroger accept plastic bags and film at store bins. Electronics retailers take cords and small gadgets, and TerraCycle runs brand backed mail in programs for beauty packaging and flexible plastics.
Find exact rules by searching your city or county website, or use Earth911 to locate drop off points by zip code. Quick tip, check whether caps stay on bottles in your area, and always rinse and dry items. That makes acceptance far more likely, regardless of what plastics are recyclable.
Common mistakes that ruin recycling and how to avoid them
If you want to know what plastics are recyclable in practice, avoid these four wrecking ball mistakes. Quick fixes you can do today:
Contamination: dirty pizza boxes, oily tubs, food residue. Rinse or scrape containers, let them drip dry, then recycle. No need for spotless, just remove most food.
Bagging recyclables: never put bottles or paper in plastic bags, they jam sorting machines. Keep items loose, or bring film plastics to store drop off points.
Small items: bottle caps, straws, single use cutlery fall through sorting screens. Collect caps inside a larger, rinsed bottle or toss tiny items in the trash unless your program accepts them.
Mixed materials: compostable liners, laminated pouches, and paper cups with plastic lining are usually not curbside recyclable. Check the resin code and use specialized drop off or manufacturer take back programs.
Alternatives when recycling is not an option
When your resin code shows an item is not accepted, don’t assume the only choice is trash. Reuse clear containers like yogurt tubs and salad clamshells for tool storage, craft supplies, or seed starters. Bring reusable glass jars to bulk stores, or use refill stations for laundry soap and dish soap to cut single use plastic. Get creative with repurposing, for example turning rigid plastic bottles into paint palettes or garden drip funnels. Buy products in glass, metal, or fully recyclable packaging when possible, and favor brands that disclose what plastics are recyclable on their labels. Finally, push for change, by asking supermarkets for refill options, joining local advocacy groups, or petitioning your municipality to expand recycling programs.
Conclusion and quick action checklist
Quick takeaways on what plastics are recyclable: check the resin code in the triangle, most curbside programs accept #1 PET and #2 HDPE, many accept #5 PP, but black plastic, mixed material items, and food soaked containers are usually rejected. Examples, water and soda bottles are #1, milk jugs are #2, yogurt cups are often #5.
Practical checklist to complete this week
- Check the resin code on five plastic items in your home.
- Rinse and empty containers, squash bottles to save space.
- Remove pumps and metal parts if your recycler asks.
- Keep plastic bags out of curbside, take them to grocery drop off.
- Confirm rules on your city website or a recycling app.
Do these five steps now, and you will instantly reduce contamination and increase the chance your plastics get recycled.
