$10 Overfill Fee: Who Pays if a Neighbor Fills Your Cart?

Republic’s overfill notice has reached households across central Contra Costa. On local forums, many people ask what stops a neighbor from filling their cart and leaving them with the fee. Nothing stops it automatically. This guide explains how the fee works, how to stop others from using your cart, and what to do if you’re charged anyway.

How the fee works

Starting November 1, 2026, Republic Services charges $10 per occurrence for an overfilled cart anywhere in the RecycleSmart area. A cart counts as overfilled if the lid won’t close securely, anything sticks up past the rim, or the waste has been pressed down to fit more in. Our guide to the overfill fee covers the rules in more detail, including the times of year when carts overflow most.

Who pays when a neighbor fills your cart

The fee goes on the bill for the account the cart belongs to, which is your account. If someone adds bags after you set it out and the lid won’t close, you pay the fee, not them. Republic’s materials don’t describe any exception for shared or borrowed carts.

Republic hasn’t said publicly how it will record overfilled carts in the RecycleSmart area. In Salinas, Republic tells customers its trucks use cameras to document overfilled and contaminated carts. It hasn’t said whether the same applies here. If you’re charged, ask what the charge is based on and whether there’s a photo.

You can say no to sharing your cart

Many neighbors are happy to share cart space. Others do not want to, and that is their choice. Your cart might have room most weeks, but you pay the fee if a neighbor’s bag keeps the lid from closing, and you live with any residue the bag leaves behind. If a neighbor asks and you do not want to share, you can say no.

What California law says

California’s illegal dumping law, Penal Code section 374.3, makes it an infraction to dump waste on private property without the owner’s consent. It also covers dumping on public or private roads, including the strip along the road. The law’s definition of waste (Penal Code section 374) includes ordinary garbage and trash.

Fines for a household-sized violation:

• $250 to $1,000 for a first offense
• $500 to $1,500 for a second offense
• $750 to $3,000 for a third or later offense

The court also adds a $100 fine that goes to the local illegal dumping enforcement program. Dumping a cubic yard or more, or dumping business waste, is a misdemeanor with higher fines and possible jail time.

The law doesn’t mention trash carts. We couldn’t find a California court decision applying it to a bag dropped in a neighbor’s cart at the curb, so whether it covers that situation is an open question. The law does make clear that consent matters, which is another reason to ask first.

Use the law only as a last resort. Talking to your neighbor solves most of these problems faster than a report. If it keeps happening after you’ve talked, Contra Costa County’s illegal dumping page lists who to contact for each town.

This is general information, not legal advice.

How to stop others from using your cart

Start with the easiest step.

• Talk to your neighbor. The fee is new, and someone who has always tossed an extra bag in your cart may not know it now costs you $10. Many streets share cart space by agreement, and that works as long as every lid closes.
• Set carts out the night before or early on collection morning, not days ahead. Pickup times vary, so the night before is the practical choice for most households.
• Keep carts behind the gate or in the garage until then.
• Take a photo when you set the cart out. A time-stamped picture of a closed lid helps if you need to dispute a charge.
• Check with Republic before adding a lock. A lid lock has to open when the truck tips the cart, or the cart won’t be emptied.
• Consider on-property service. For $13.85 a month, the driver walks your carts from an agreed spot on your property to the truck and back, so they never sit at the curb. Republic can turn down a request for safety or operational reasons.

If you’re charged for trash that wasn’t yours

Call Republic Services at 925-685-4711. Explain what happened, ask what the charge is based on, and share your photo if you took one. Keep paying the rest of your bill while the charge is reviewed.

If Republic doesn’t resolve it, RecycleSmart handles unresolved service complaints at 925-906-1801 or authority@recyclesmart.org.

If you need more room in your cart

Some weeks every household runs out of space. Ask before using someone else’s cart, and look at these options first:

• Move food scraps to the green cart. It takes food scraps along with yard trimmings, which frees up room in the black cart. Our guide to why the green cart smells covers how to keep it manageable.
• Use your free on-call pickups. Each household gets four a year for yard trimmings or recyclables, plus the Reuse & Cleanup Days.
• Switch to a larger black cart. One size change per rate year is free. Call 925-685-4711.
• Pay for the extra bag. Republic’s rate sheet lists $17.78 per extra 32-gallon bag collected next to the cart on your pickup day. Call first to confirm how to arrange it.
• Add a recycling or yard waste cart. Extra carts start at $8.82 a month.

Why a closed lid matters

An overfilled or shared cart gets dirty faster. A lid that won’t close lets flies in, and in warm weather their eggs can hatch within about a day. Bags from another household also bring residue you didn’t create: diapers, pet waste, leaking food packaging. A cart that smells also draws raccoons and rats at night. Our guides to keeping maggots out and keeping raccoons out of your bins have more detail.

How Bin Bliss helps

We can’t stop a neighbor from using your cart. We can clean out whatever they leave behind.

Bin Bliss deep cleans and sanitizes bins at the curb the day after pickup, across Contra Costa County: high-pressure wash, EPA-registered disinfectant, wash water captured, and a fresh scent to finish. First cleaning from $49. Text CLEAN to (650) 830-2143.

Fees and program rules change. Confirm the current terms with Republic Services at 925-685-4711 before relying on anything in this article.