Different strategies may be adopted based on the target contaminants.
For example, manufacturing processes for dicofol and
DDT containing anti-fouling paints should be carefully designed,
controlled and plant discharge regulated so that the levels of
residual DDTs in the final products and that are discharged to
receiving waters would be minimized. In addition, dismantling of
e-waste, whether imported or domestically generated, must be
rigorously supervised to minimize the discharge of PBDEs and
PCDD/Fs into the ambient environment. Disposal of PCBs containing
capacitors and power transformers needs to be
managed with vigilance to prevent leakage of residual PCBs into the
environment. Although the current levels of PFOS and PFOA in tap
water are not of concern at the present time, the large amounts of
these compounds being produced and used in China may require
a well planned strategy to deal with any unforeseen adverse
environmental consequence in the future.