The EPA has approved the Taoyuan City government’s Shinjie River and Puhsin River Basin Wastewater Total Quantity Control Methods in accordance with Article 9 of the Water Pollution Control Act. Since the Act was promulgated in 1974, this is the first such case in the nation, which has become a milestone for the future of river remediation and industrial wastewater control. To protect water bodies and the environment, the EPA has given priority to improving the quality of irrigation water sources for specified agricultural lands. From 2015 the EPA began assisting Taoyuan City, Changhua County and Taichung City in implementing waterbody heavy metal total quantity controls. Looking at the current status of waterbodies, the EPA and local governments drew up a map to zone areas for total quantity control measures, and formulated total quantity control methods. Revisions were made to the Effluent Standards and the Water Pollution Control Measures and Permit Application Review Regulations, paving the way for enacting total quantity control regulations. These two regulations were amended and promulgated on 6 January and 19 January 2016, respectively. The EPA’s approval of the Taoyuan City Government’s total quantity control methods was done in accordance with Article 9 of the Water Pollution Control Act. Both the Shinjie River and the Puhsin River require special protection measures, as the catchment areas for these rivers include rainwater runoff and industrial wastewater from the Huangchien River, an upstream tributary. The waterbodies are used to irrigate 950 hectares of farmland, and long-time irrigation has resulted in increasingly serious problems of heavy metal contamination. With 145 hectares of this land now listed as soil pollution control sites, there is an urgent need to improve the quality of these irrigation water sources. With this ratification, the Taoyuan City Government will designate the Shinjie River and Puhsin River basins as total quantity control zones to be managed according to a classification system. Class 1 total quantity control zones are distributed in the Chungli and Luzhu Districts. Class 2 total quantity control zones include a total area of some 10,000 hectares. The Chungli Industrial Park and Advanced Semiconductor Engineering Company are both part of the industrial park sewer systems located within a Class 1 total quantity control zone. Printed circuit board manufacturers are the main industry located in the Class 2 total quantity control zone. A total of 27 industries will eventually be included in the total quantity control zone system and subject to stricter controls. Among the pollutants targeted under the Taoyuan City total quantity control system are copper, zinc, nickel, total chromium, hexavalent chromium and cadmium. According to the EPA’s latest regulations for Class 1 total quantity control zones, industries that generate or discharge wastewater containing any one of these six heavy metals will not be issued permits for new applications, and will not be allowed to make changes or increase their heavy metal emissions or total quantities. If after five years the water quality of the waterbody in question is still not suitable for irrigation or if there are still serious pollution concerns, the responsible enterprise will not be granted a permit again after its existing permit expires. Once a permit has been revoked or canceled due to violations, a violating enterprise will never be granted a permit again. In addition, if an enterprise located in a Class 1 or Class 2 total quantity control zone plans to discharge wastewater into waterbodies of concern, the wastewater must be treated until it meets the tightened effluent standards before the enterprise may discharge it. The EPA and local governments are working together closely to revise regulations so as to prevent heavy metals in industrial wastewater from affecting irrigation water quality. It is apparent that these efforts are bearing results. In the future, the EPA will continue to review the delineation of total quantity control zones proposed by the Taichung City and the Changhua County Governments.