From Table 1, 12 kinds of esters and 13 kinds of alkanes were identified, occupying a big proportion of
the organic pollutants in water. In the three involved tap water samples, 27.19%~34.32% of total ion
chromatogram peak area was determined as alkanes and 22.85%~33.42% as esters. In the detected
organic pollutants, phthalate esters, halogenated hydrocarbons and phenols have great harmful to human