About 10 percent of all small plastic bottles with a deposit today are expected to be thrown away.

The consumer has lost that money, but it is not gone.

It is used to pay for the entire collection system.

According to Statiegeld Nederland, this costs 64 million euros per year.

"The money that remains with us because people accidentally or not throw away the bottles is not even enough to cover the costs of the system," says Raymond Gianotten, director of Statiegeld Nederland, to NU.nl.

Since 1 July, a deposit on small plastic bottles is mandatory.

It is about 0.15 euros per bottle.

The producers of the soft drinks and water also pay 0.016 euros per bottle to the organization that implements and manages the system.

They also do the same for the large deposit bottles, for which they pay 0.018 euros per bottle.

Also, some of the large bottles are never returned and the deposit (0.25 euros) therefore does not go back to the consumer.

About 900 million small plastic bottles are sold every year and 600 million large bottles.

Bottles with and without a deposit are mixed up

Since June 1, the small plastic bottles with a deposit have been flowing into supermarkets, since July 1, manufacturers are no longer allowed to market bottles without a deposit.

The old stocks are being used up, so the bottles with and without a deposit will still be mixed up on the shelves for some time.

This can lead to confusion, even if there is a logo on the bottles with a deposit.

Gianotten cannot yet say how many small bottles with deposits have ended up in the waste bin so far.

"It's too early for that. We see that the number of bottles that come back is steadily growing, by millions per week."

He says it is realistic that, especially in the initial phase, more bottles end up in the waste unintentionally.

"If it is thrown in the plastic waste, it will at least still be recycled. And if people throw it on the street, the deposit does what it is intended for."

The director of Statiegeld Nederland certainly does not encourage that.

"But then whoever does that will lose his money."

'Litter pickers' can collect and hand in those bottles if necessary, so that they have money left over and the bottle still comes back into the system.

"The goal is in any case that 90 percent of the bottles come back," says Gianotten.

Campaigns are conducted to make consumers aware that there is a deposit on the bottles.

The money is not for the supermarket

"We are investigating whether that works sufficiently and we are monitoring submission behaviour. If necessary, we will take additional action."

The 64 million euros that the system costs will, among other things, be used for compensation for the collection locations.

"For the machines and the work involved. But also for transport costs, for example, counting the bottles and keeping a very accurate administration, because it involves a lot of money."

Producers of soft drinks and mineral water charge the deposit to the supermarkets to which they sell their drinks.

They pass this money on to Deposit Deposit in the Netherlands.

The supermarket in turn charges the consumer with the 0.15 euros, which you can see on the receipt.

"As long as the bottle is not handed in, we have that money."

Under no circumstances does it remain with the producer or supermarket.