The conclusions of EFSA following the peer review of the initial efficacy assessment and consideration of the effects of water treatment used for the production of drinking water on any residues that might be in raw water carried out by the competent authority of the rapporteur Member State Greece for the pesticide active substances paraffin oils (CAS 64742‐46‐7, 72623‐86‐0 and 97862‐82‐3) are reported. The context of the peer review was that required by Regulation (EC) No 1107/2009 of the European Parliament and of the Council for an amendment in approval conditions. The conclusions were reached on the basis of the evaluation of the efficacy of paraffin oils (CAS 64742‐46‐7, 72623‐86‐0 and 97862‐82‐3) as a fungicide. The reliable endpoints are presented.