Zero VOC or NO VOC paint is a misnomer and only means very, very low levels of VOC's. Usually, paints marketed with these titles will have VOC's in the range of under 5 g/L. Even when adding in pigment at the paint store, which can add 2-5 g/L of VOC, the total VOC content for the mixed paint would be under 10 g/L .
This low level of VOC content paint is as good as it's going to get from the larger paint companies.
An example of a paint that meets this spec is Harmony® Paint by Sherwin-Williams.
To get lower VOC content than this would require the use of more expensive and less readily available Non-Toxic or Natural Paints.
By the way VOC stands for Volatile Organic Compound.
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