On 12 May 2016, the EPA announced the amendments to the Water Quality Standards for Injection Treated Wastewater into Groundwater Bodies as a part of overall controls on substances harmful to human health. The amendments were made in accordance with Article 36 of the Water Pollution Control Act regarding criminal penalties for violators. The amendments also added substances that are harmful to health to be controlled to prevent unscrupulous operators from injecting wastewater that contains harmful substances in concentrations exceeding water quality standards for water injected into a groundwater body. The Water Pollution Control Act was amended on 4 February 2015. Article 32 Paragraph 1 states that wastewater or sewage may not be injected into a groundwater body or discharged into soil. Article 36 also states that any person held responsible for injecting wastewater that contains harmful substances in concentrations exceeding any limits covered in the Water Pollution Control Act into groundwater shall face punishment up to a maximum of three years imprisonment. To make enterprises that illegally inject wastewater subject to criminal penalties, the regulations have been amended and retitled as Water Quality Standards for Groundwater Body Injection and Types and Limits of Harmful Substances. The main points of the amendments are as follows: 1. Details of controls on 21 harmful substances and their maximum limits have been added in order to strengthen the requirement under Article 32 of the Water Pollution Control Act that wastewater must be treated to designated standards in accordance with the environmental risk assessment results and does not contain harmful substances. The newly added items and their limits are shown in the table below. 2. As a general risk management principle the following substances should not be present in wastewater: ‧Group 1, Group 2A and 2B carcinogenic substances as listed by the International Agency for Research on Cancer ‧Group 1 carcinogenic, mutagenic and toxic for reproduction substances as stated in the Ministry of Labor’s list of priority control substances The amendments are designed to prevent illegal behavior and heavily penalize unscrupulous operators that inject wastewater into a groundwater body. Anyone caught polluting soil or groundwater may be prosecuted and could be sentenced up to five years in prison.