Groundwater Pollution Control Standards

2013-12-18
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Article 1
These Standards are determined pursuant to Article 6, Paragraph 2 of the Soil and Groundwater Pollution Remediation Act (herein referred to as this Act).
Article 2
When the concentrations of substances in groundwater listed in these Standards are affected by local hydrological, geological, and environmental background factors, and it is determined that the control values of pollutants listed in these Standards are reached for reasons not attributable to external pollution, after obtaining the approval from the central competent authority, these Standards shall not be applicable.
Article 3
Groundwater is classified into the following two categories:
I. Category 1: Groundwater in drinking water source protection areas
II. Category 2: Groundwater which is not of Category 1
Article 4
Pollution control items and standard values (concentration units: mg/L):
┌─────────────┬─────────┬───────┐
│Pollutant items │Control Standards │Remarks │
│ ├────┬────┤ │
│ │Category│Category│ │
│ │1 │2 │ │
├─────────────┴────┴────┼───────┤
│Monocyclic aromatic hydrocarbons │ │
├─────────────┬────┬────┼───────┤
│Benzene │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│Toluene │1.0 │10 │ │
├─────────────┼────┼────┼───────┤
│Ethylbenzene │0.70 │7.0 │ │
├─────────────┼────┼────┼───────┤
│Xylenes │10 │100 │ │
├─────────────┴────┴────┴───────┤
│Polycyclic aromatic hydrocarbons │
├─────────────┬────┬────┬───────┤
│Naphthalene │0.040 │0.40 │ │
├─────────────┴────┴────┴───────┤
│Chlorinated hydrocarbons │
├─────────────┬────┬────┬───────┤
│Carbon tetrachloride │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│Chlorobenzene │0.10 │1.0 │ │
├─────────────┼────┼────┼───────┤
│Chloroform │0.10 │1.0 │ │
├─────────────┼────┼────┼───────┤
│Chloromethane │0.030 │0.30 │ │
├─────────────┼────┼────┼───────┤
│1,4-Dichlorobenzene │0.075 │0.75 │ │
├─────────────┼────┼────┼───────┤
│1,1-Dichloroethane │0.85 │8.5 │ │
├─────────────┼────┼────┼───────┤
│1,2-Dichloroethane │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│1,1-Dichloroethylene │0.0070 │0.070 │ │
├─────────────┼────┼────┼───────┤
│(cis-1,2-Dichloroethylene)│0.070 │0.70 │ │
├─────────────┼────┼────┼───────┤
│trans-1,2-Dichloroethylene│0.10 │1.0 │ │
├─────────────┼────┼────┼───────┤
│2,4,5-Trichlorophenol │0.37 │3.7 │ │
├─────────────┼────┼────┼───────┤
│2,4,6-Trichlorophenol │0.01 │0.1 │ │
├─────────────┼────┼────┼───────┤
│Pentachlorophenol │0.008 │0.08 │ │
├─────────────┼────┼────┼───────┤
│Tetrachloroethylene │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│Trichloroethylene │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│Vinyl chloride │0.0020 │0.020 │ │
├─────────────┼────┼────┼───────┤
│Dichloromethane │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│1,1,2-Trichloroethane │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│1,1,1-Trichloroethane │0.20 │2.0 │ │
├─────────────┼────┼────┼───────┤
│1,2-Dichlorobenzene │0.6 │6.0 │ │
├─────────────┼────┼────┼───────┤
│3,3’-Dichlorobenzidine │0.01 │0.1 │ │
├─────────────┴────┴────┴───────┤
│Agricultural Chemicals │
├─────────────┬────┬────┬───────┤
│2,4-D │0.070 │0.70 │ │
├─────────────┼────┼────┼───────┤
│Carbofuran │0.040 │0.40 │ │
├─────────────┼────┼────┼───────┤
│Chlordane │0.0020 │0.020 │ │
├─────────────┼────┼────┼───────┤
│Diazinon │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│Methamidophos │0.020 │0.20 │ │
├─────────────┼────┼────┼───────┤
│Paraquat │0.030 │0.30 │ │
├─────────────┼────┼────┼───────┤
│Parathion │0.022 │0.22 │ │
├─────────────┼────┼────┼───────┤
│Toxaphene │0.0030 │0.030 │ │
├─────────────┴────┴────┴───────┤
│Heavy metals │
├─────────────┬────┬────┬───────┤
│Arsenic (As) │0.050 │0.50 │Judged by │
│ │ │ │Appendix: │
│ │ │ │Procedure of │
│ │ │ │pollution │
│ │ │ │potential area│
│ │ │ │establishment │
│ │ │ │and origin │
│ │ │ │evaluation of │
│ │ │ │groundwater │
│ │ │ │arsenic │
├─────────────┼────┼────┼───────┤
│Cadmium (Cd) │0.0050 │0.050 │ │
├─────────────┼────┼────┼───────┤
│Chromium (Cr) │0.050 │0.50 │ │
├─────────────┼────┼────┼───────┤
│Copper (Cu) │1.0 │10 │ │
├─────────────┼────┼────┼───────┤
│Lead (Pb) │0.010 │0.10 │ │
├─────────────┼────┼────┼───────┤
│Mercury (Hg) │0.0020 │0.020 │ │
├─────────────┼────┼────┼───────┤
│Nickel (Ni) │0.10 │1.0 │ │
├─────────────┼────┼────┼───────┤
│Zinc (Zn) │5.0 │50 │ │
├─────────────┼────┼────┼───────┤
│Indium (In) │0.07 │0.7 │Applicable to │
├─────────────┼────┼────┤groundwater │
│Molybdenum (Mo) │0.07 │0.7 │pollution │
│ │ │ │investigation │
│ │ │ │for industrial│
│ │ │ │processes │
│ │ │ │using In or Mo│
│ │ │ │as raw │
│ │ │ │material │
├─────────────┴────┴────┴───────┤
│General items │
├─────────────┬────┬────┬───────┤
│Nitrates (Nitrate as N) │10 │100 │ │
├─────────────┼────┼────┼───────┤
│Nitrates (Nitrate as N) │1.0 │10 │ │
├─────────────┼────┼────┼───────┤
│Fluoride (Fluoride as F-) │0.8 │8.0 │ │
├─────────────┴────┴────┴───────┤
│Other pollutants │
├─────────────┬────┬────┬───────┤
│Methyl tert-butyl ether; │0.1 │1.0 │ │
│MTBE │ │ │ │
├─────────────┼────┼────┼───────┤
│Total Petroleum │1.0 │10 │ │
│Hydrocarbons; TPH │ │ │ │
├─────────────┼────┼────┼───────┤
│Cyanide (Cyanide as CN-) │0.050 │0.50 │ │
└─────────────┴────┴────┴───────┘
  • Appendix：Procedure of pollution potential area establishment and origin evaluation of groundwater arsenic.PDF
  • Appendix：Procedure of pollution potential area establishment and origin evaluation of groundwater arsenic.doc
Article 5
Appropriate investigation items and areas can be assessed, chose and decided by competent authorities at all levels according to region characteristics, investigation purposes and operating methods.
Article 6
Scientific data and information can be provided by industry and related associations or environmental protection organizations to the central competent authorities as the reference of Standards modification.
Article 7
These Standards shall take effect from the date of promulgation.
These Standards revised on December 18, 2013 shall take effect on January 1, 2014.