The quality criteria is studied using SSD and natural logarithm cumulative probability distributing fitting model based on USEPA ECOTOX database. The results indicate that the criteria maximum concentration (CMC) of BPA is 403 μg/L; the criteria continuous concentration (CCC) of BPA is 80.6 μg/L. In addition, the paper also gives accumulation normal distribution function and probability density function of the WQC for BPA. Finally, the paper provides qualitative analysis of the WQC for BPA. Under the premise, the results show that the WQC of BPA has a certain reference value and its deterministic probability lies between 71.43%~100%.