Picking up a house brand apple juice at a Supabarn store, you may have believed it used fruit from a quaint farm at the heart of NSW's Riverina.

But a consumer watchdog investigation has found Supabarn's two litre apple juice, manufactured by the Real Juice Company and marked "Made in Griffith", actually used reconstituted concentrate from China.

Supabarn supermarket says it was also a "victim" of the Real Juice Company's false claims.

The Australian Competition and Consumer Commission revealed on Thursday the supermarket chain and the juice manufacturer have each paid penalties totalling $20,400 for the false representations.

It said Supabarn's private label two litre cranberry juice also falsely declared "no added sugar, no artificial flavours, no artificial colours, no preservatives" when the juice contained added sugar and other additives.