Income inequalities in exposure to endocrine disrupting chemicals among pregnant women in Taiwan

•Significant differences in crude concentrations of endocrine disruptors between regions.•Adjustment for creatinine and molar weight reduced differences between income groups.•<10 % of study population bore 50 % of exposure to parabens, BPA and LMW phthalates.•26 % of population from the poorest areas bore 50 % exposure to LMW phthalates.•Income-attributed inequalities in LMW phthalates exposure in the East and South regions.