Article 3
Regulations of these standards are set forth herein.
I. Bacterial standards: (Samples for total bacterial count must be collected from the finished water distribution networks that receive water from water treatment utilities with disinfection regime)
┌───────────┬────────┬─────────┐
│Item │Maximum limit │Unit │
├───────────┼────────┼─────────┤
│1. Coliform group │6 (Multiple-tube│Most probable │
│ │fermentation │number (MPN)/100 │
│ │method) │milliliters │
│ ├────────┼─────────┤
│ │6 (Membrane │Colony-forming │
│ │filtration │unit (CFU)/100 │
│ │method) │milliliters │
├───────────┼────────┼─────────┤
│2. Total bacterial │100 │Colony-forming │
│ count │ │unit │
│ │ │(CFU)/milliliter │
└───────────┴────────┴─────────┘
II. Physical standards:
┌───────────┬────────┬─────────┐
│Item │Maximum limit │Unit │
├───────────┼────────┼─────────┤
│1. Odor │3 │Threshold odor │
│ │ │number (TON) │
├───────────┼────────┼─────────┤
│2. Turbidity │2 │NTU (nephelometric│
│ │ │turbidity unit) │
├───────────┼────────┼─────────┤
│3. Color │5 │Platinum-cobalt │
│ │ │unit │
└───────────┴────────┴─────────┘
III. Chemical standards:
A. Substances that impact health:
┌───────────────────┬───────┬────────┐
│Item │Maximum limit │Unit │
├───────────────────┼───────┼────────┤
│1. Arsenic │0.01 │milligrams/liter│
├───────────────────┼───────┼────────┤
│2. Lead │0.01 │milligrams/liter│
├───────────────────┼───────┼────────┤
│3. Selenium │0.01 │milligrams/liter│
├───────────────────┼───────┼────────┤
│4. Total chromium │0.05 │milligrams/liter│
├───────────────────┼───────┼────────┤
│5. Cadmium │0.005 │milligrams/liter│
├───────────────────┼───────┼────────┤
│6. Barium │2.0 │milligrams/liter│
├───────────────────┼───────┼────────┤
│7. Antimony │0.01 │milligrams/liter│
├───────────────────┼───────┼────────┤
│8. Nickel │0.1 │milligrams/liter│
├───────────────────┼───────┼────────┤
│9. Mercury │0.002 │milligrams/liter│
├───────────────────┼───────┼────────┤
│10. Cyanide (as CN-) │0.05 │milligrams/liter│
├───────────────────┼───────┼────────┤
│11. Nitrite-nitrogen (as N) │0.1 │milligrams/liter│
├──────┬────────────┼───────┼────────┤
│Disinfection│12. Total │0.08 │milligrams/liter│
│byproducts │ trihalomethanes │ │ │
│ ├────────────┼───────┼────────┤
│ │13. Haloacetic acids │0.080 │milligrams/liter│
│ │ (This concentration │This standard │ │
│ │ is defined as the │is effective │ │
│ │ sum of measured │starting on │ │
│ │ concentrations for │July 1, 2014. │ │
│ │ five haloacetic │ │ │
│ │ acids, including │0.060 │ │
│ │ monochloroacetic │This standard │ │
│ │ acid (MCAA), │is effective │ │
│ │ dichloroacetic acid │starting on │ │
│ │ (DCAA), │July 1, 2015. │ │
│ │ trichloroacetic acid│ │ │
│ │ (TCAA), │ │ │
│ │ monobromoacetic acid│ │ │
│ │ (MBAA), and │ │ │
│ │ dibromoacetic acid.)│ │ │
│ ├────────────┼───────┼────────┤
│ │14. Bromate │0.01 │milligrams/liter│
│ │ │In │ │
│ │ │consideration │ │
│ │ │of water needs│ │
│ │ │and Taiwan’s │ │
│ │ │unique climate│ │
│ │ │and │ │
│ │ │hydrological │ │
│ │ │environment, │ │
│ │ │the bromate │ │
│ │ │standard will │ │
│ │ │not be │ │
│ │ │applicable │ │
│ │ │when the water│ │
│ │ │source │ │
│ │ │turbidity │ │
│ │ │exceeds 500 │ │
│ │ │NTU in the │ │
│ │ │event of │ │
│ │ │typhoons and │ │
│ │ │other natural │ │
│ │ │disasters. │ │
│ ├────────────┼───────┼────────┤
│ │15. Chlorites │1.0 │milligrams/liter│
│ │(Chlorite) │ │ │
│ │(This regulation only │ │ │
│ │applies to water supply │ │ │
│ │systems that use gaseous│ │ │
│ │chlorine dioxide as │ │ │
│ │disinfectant) │ │ │
├──────┼────────────┼───────┼────────┤
│Volatile │16. Trichloroethene │0.005 │milligrams/liter│
│organic ├────────────┼───────┼────────┤
│compounds │17. Carbon tetrachloride│0.005 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │18. │0.20 │milligrams/liter│
│ │1,1,1-Trichloroethane │ │ │
│ ├────────────┼───────┼────────┤
│ │19. 1,2-Dichloroethane │0.005 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │20. Vinyl chloride │0.002 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │21. Benzene │0.005 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │22. 1,4-Dichlorobenzene │0.075 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │23. 1.1-Dichloroethylene│0.007 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │24. Dichloromethane │0.02 │milligrams/liter│
│ │ │This standard │ │
│ │ │is effective │ │
│ │ │starting on │ │
│ │ │July 1, 2014. │ │
│ ├────────────┼───────┼────────┤
│ │25. 1,2-Dichlorobenzene │0.6 │milligrams/liter│
│ │ │This standard │ │
│ │ │is effective │ │
│ │ │starting on │ │
│ │ │July 1, 2014. │ │
│ ├────────────┼───────┼────────┤
│ │26. Toluene │1 │milligrams/liter│
│ │ │This standard │ │
│ │ │is effective │ │
│ │ │starting on │ │
│ │ │July 1, 2014. │ │
│ ├────────────┼───────┼────────┤
│ │27. Xylenes │10 │milligrams/liter│
│ │(This regulation │This standard │ │
│ │concentration is defined│is effective │ │
│ │as the sum of the │starting on │ │
│ │measured concentrations │July 1, 2014. │ │
│ │of three xylene isomers,│ │ │
│ │including 1,2-Xylene, │ │ │
│ │1,3-Xylene, and │ │ │
│ │1,4-Xylene.) │ │ │
│ ├────────────┼───────┼────────┤
│ │28. │0.07 │milligrams/liter│
│ │Cis-1,2-Dichloroethene │This standard │ │
│ │ │is effective │ │
│ │ │starting on │ │
│ │ │July 1, 2014. │ │
│ ├────────────┼───────┼────────┤
│ │29. │0.1 │milligrams/liter│
│ │Trans-1,2-Dichloroethene│This standard │ │
│ │ │is effective │ │
│ │ │starting on │ │
│ │ │July 1, 2014. │ │
│ ├────────────┼───────┼────────┤
│ │30. Tetrachloroethene │0.005 │milligrams/liter│
│ │ │This standard │ │
│ │ │is effective │ │
│ │ │starting on │ │
│ │ │July 1, 2014. │ │
├──────┼────────────┼───────┼────────┤
│Agricultural│31. Endosulfan │0.003 │milligrams/liter│
│chemicals ├────────────┼───────┼────────┤
│ │32. Lindane │0.0002 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │33. Butachlor │0.02 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │34. │0.07 │milligrams/liter│
│ │Dichlorophenoxyacetic │ │ │
│ │acid │ │ │
│ ├────────────┼───────┼────────┤
│ │35. Paraquat │0.01 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │36. Methomyl │0.01 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │37. Carbofuran │0.02 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │38. Isoprocarb │0.02 │milligrams/liter│
│ ├────────────┼───────┼────────┤
│ │39. Methamidophos │0.02 │ │
│ ├────────────┼───────┼────────┤
│ │40. Diazinon │0.005 │ │
│ ├────────────┼───────┼────────┤
│ │41. Parathion │0.02 │ │
│ ├────────────┼───────┼────────┤
│ │42. O-Ethyl-O-P- │0.005 │ │
│ │Nitrophenyl │ │ │
│ │thionobenzenephos- │ │ │
│ │phonate │ │ │
│ ├────────────┼───────┼────────┤
│ │43. Monocrotophos │0.003 │milligrams/liter│
├──────┼────────────┼───────┼────────┤
│Persistent │44 Dioxin │3 │Petagram-World │
│organic │(Dioxin) │This standard │Health │
│pollutants │This regulation │is effective │Organization- │
│ │concentration is defined│starting on │total toxicity │
│ │as the │July 1, 2014. │equivalency │
│ │sum of the measured │ │quantity/liter │
│ │concentrations of │ │(pg-WHO-TEQ/L) │
│ │17 compounds, │ │ │
│ │including 2,3,7,8 │ │ │
│ │Tetrachlorinated │ │ │
│ │dibenzo-p-dioxin- │ │ │
│ │,3,7,8-TeCDD, 2,3 │ │ │
│ │7,8-Tetrachlorinated │ │ │
│ │dibenzofuran,2,3, │ │ │
│ │,8-TeCDF and 2,3, │ │ │
│ │,8-penta-, hexa- │ │ │
│ │hepta-, and octa- │ │ │
│ │chlorinated dioxins and │ │ │
│ │furan, multiplied by the│ │ │
│ │World Health │ │ │
│ │Organization’s │ │ │
│ │dioxin toxic equivalency│ │ │
│ │factor │ │ │
│ │(WHO-TEFs), and │ │ │
│ │is expressed as a │ │ │
│ │total toxicity │ │ │
│ │equivalency │ │ │
│ │quantity (TEQ). │ │ │
│ │(Any water purification │ │ │
│ │plants within a │ │ │
│ │5-kilometer │ │ │
│ │distance of a large │ │ │
│ │pollution source must be│ │ │
│ │tested once │ │ │
│ │annually. If the test │ │ │
│ │values do not exceed the│ │ │
│ │maximum permissible │ │ │
│ │limit │ │ │
│ │for two consecutive │ │ │
│ │years the testing │ │ │
│ │frequency may be │ │ │
│ │changed to once │ │ │
│ │every two years │ │ │
│ │starting in the │ │ │
│ │following year.) │ │ │
└──────┴────────────┴───────┴────────┘
B. Substances with potential health impact:
┌────────────────┬────┬────────┐
│Item │Maximum │Unit │
│ │limit │ │
├────────────────┼────┼────────┤
│1. Flouride (as F-) │0.8 │milligrams/liter│
├────────────────┼────┼────────┤
│2. Nitrate nitrogen │10.0 │milligrams/liter│
├────────────────┼────┼────────┤
│3. Silver │0.05 │milligrams/liter│
├────────────────┼────┼────────┤
│4. Molybdenum │0.07 │milligrams/liter│
│(This regulation only applies to│ │ │
│water supply systems with a │ │ │
│potential pollution source, such│ │ │
│as those with semiconductor │ │ │
│fabrication plants, │ │ │
│optoelectronic manufacturing │ │ │
│plants, or parts manufacturing │ │ │
│plants, located within a │ │ │
│5-kilometer distance upstream │ │ │
│from their water intake. The │ │ │
│testing frequency is once per │ │ │
│quarter. If the test values do │ │ │
│not exceed the maximum │ │ │
│permissible limits for two │ │ │
│consecutive years, the testing │ │ │
│frequency could reduce to once │ │ │
│per year from the following │ │ │
│year.) │ │ │
├────────────────┼────┼────────┤
│5. Indium │0.07 │milligrams/liter│
│(This regulation only applies to│ │ │
│water supply systems with a │ │ │
│potential pollution source, such│ │ │
│as those with semiconductor │ │ │
│fabrication plants, │ │ │
│optoelectronic manufacturing │ │ │
│plants, or parts manufacturing │ │ │
│plants, located within a │ │ │
│5-kilometer distance upstream │ │ │
│from their water intake The │ │ │
│testing frequency is once per │ │ │
│quarter. If the test values do │ │ │
│not exceed the maximum │ │ │
│permissible limits for two │ │ │
│consecutive years, the testing │ │ │
│frequency could reduce to once │ │ │
│per year from the following │ │ │
│year.) │ │ │
│ │ │ │
└────────────────┴────┴────────┘
C. Contaminants that cause aesthetic, cosmetic, and technical effects:
┌─────────────┬───────┬────────┐
│Item │Maximum limit │Unit │
│ │ │ │
├─────────────┼───────┼────────┤
│1. Iron │0.3 │milligrams/liter│
├─────────────┼───────┼────────┤
│2. Manganese │0.05 │milligrams/liter│
├─────────────┼───────┼────────┤
│3. Copper │1.0 │milligrams/liter│
├─────────────┼───────┼────────┤
│4. Zinc │5.0 │milligrams/liter│
├─────────────┼───────┼────────┤
│5. Sulfate (as SO4-2) │250 │milligrams/liter│
├─────────────┼───────┼────────┤
│6. Phenols │0.001 │milligrams/liter│
├─────────────┼───────┼────────┤
│7. Anionic surface-active │0.5 │milligrams/liter│
│ agents │ │ │
├─────────────┼───────┼────────┤
│8. Chloride (as Cl) │250 │milligrams/liter│
├─────────────┼───────┼────────┤
│9. Ammonia nitrogen │0.1 │milligrams/liter│
├─────────────┼───────┼────────┤
│10. Total hardness as │300 │milligrams/liter│
│ CaCO3 │ │ │
├─────────────┼───────┼────────┤
│11. Total dissolved solids│500 │milligrams/liter│
├─────────────┼───────┼────────┤
│12. Aluminum │0.4 │milligrams/liter│
│(This regulation │This standard │ │
│concentration is defined │is effective │ │
│as the concentration of │starting on │ │
│total aluminum.) │July 1, 2014. │ │
│ │ │ │
│ │0.3 │ │
│ │This standard │ │
│ │is effective │ │
│ │starting on │ │
│ │July 1, 2015. │ │
│ │ │ │
│ │0.2 │ │
│ │This standard │ │
│ │is effective │ │
│ │starting on │ │
│ │July 1, 2019. │ │
│ │(This │ │
│ │regulation is │ │
│ │not applicable│ │
│ │when the │ │
│ │turbidity of │ │
│ │the water │ │
│ │source is over│ │
│ │500 NTU in the│ │
│ │period of │ │
│ │typhoon │ │
│ │landfall │ │
│ │warning, and │ │
│ │when the │ │
│ │turbidity of │ │
│ │water source │ │
│ │is over 1000 │ │
│ │NTU during the│ │
│ │three days │ │
│ │after the │ │
│ │warning is │ │
│ │lifted.) │ │
│ │ │ │
└─────────────┴───────┴────────┘
D. Limits on residual chlorine (Limited to water supply systems using chlorine as disinfectant)
┌────────────────┬────┬────────┐
│Item │Maximum │Unit │
│ │limit │ │
├────────────────┼────┼────────┤
│Free available residual chlorine│0.2-1.0 │milligrams/liter│
└────────────────┴────┴────────┘
E. Range for pH index (water treated by stationary continuous water supply equipment on public or private premises are not be subjected to this limitation):
┌────────────────┬────┬────────┐
│Item │Maximum │Unit │
│ │limit │ │
├────────────────┼────┼────────┤
│Hydrogen ion concentration index│6.0-8.5 │No unit │
│(pH value) │ │ │
└────────────────┴────┴────────┘