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Title: Effluent Standards Ch
Date: 2007.09.03
Legislative: Promulgation of amend provisions full 8 Articles by Order of Huan
-Shu-Shui-Zi No. 0960065740, September 3 2007, It shall be
implemented from the date of publication,Environmental Protection
Administration, Executive Yuan
Content: Article 1
The Standards are established pursuant to Paragraph 2 of Article 
7 of the Water Pollution Control Act (hereinafter referred to as 
the Act”).

Article 2
The water quality items and limits for the effluent standards of 
the enterprises, sewage systems and building sewage treatment 
facilities are specified below:

Article 4
The COD limits specified in the Standards shall be tested using 
the potassium dichromate reversal method; the true color shall be 
tested using the true color colorimetry.

Article 5
The limits of all the items, except for the hydrogen ion 
concentration index defined as a range, are defined as a maximum 
allowed value with the following measuring units:
I. Hydrogen ion concentration index: No unit
II. True color: No unit
III. Coliform group: CFU/100mL
IV. Other items: mg/L

Article 6
The limits of all the items, except for water temperature and 
hydrogen ion concentration index, of the non-contact cooling water 
that enterprises or sewage systems take from a water body and use 
it for cooling or circulation purpose are not subject to the 
Standards if it is discharged into the surface water body in the 
original water intake area.

Article 7
In the event that enterprises, sewage systems, or building sewage 
treatment facilities belong to two or more industry types within 
the scope of the Standards or to a single industry type but have 
different processes, the combined treatment and discharge of 
wastewater shall conform to the effluent standards for each of 
the concerned industry types. If different control limits are 
available for the same control item, the stricter limit shall 
apply.In the event that the flow of wastewater from one of the 
industry types in the preceding paragraph is at least 75% of the 
total flow of wastewater, and that independent and exclusive 
cumulative water measuring facilities have been installed, an 
application may be submitted to the competent authority for the 
use of the effluent standards of concerned industry type as the 
basis of control for all common items.
The percentage of the flow of wastewater in the preceding 
paragraph shall be calculated in accordance with the records of 
the six months prior to the date of application.

Article 8
The Standards come into force on the promulgation date.