Mean concentrations of OCP residues (µg kg−1) in raw milk samples collected from urban areas. A1-Iqbal Town, A2-Gulberg Town, A3-Samanabad Town, A4-Data Ganj Baksh Town, A5-Ravi Town, A6-Nishtar Town, A7-Aziz Bhatti Town, A8-Shalimar Town, A9-Wahgah Tow, A10-Cantonment, F1-Sabeel Dairy, F2-Decent Dairy, F3-Farmer's Dairy, F4-Sadaat Dairy, F5-RC Cola Dairy, F6-Zakky Dairy, F7-Star Dairy, F8-Quelts Dairy, F9-Noble Dairy, F10-Hussain Cattle and Dairy Farm