The current Act stipulates that owners, etc., of public-use facilities shall either measure indoor air quality directly or through the persons prescribed by the Ordinance of the Ministry of Environment, and shall keep and preserve the results of such measurement.

However, critics point out that a measurement taken every one or two years as prescribed by the Ordinance of the Ministry of Environment would only represent actual indoor air quality to a limited extent, and that satisfactory measurement results obtained even when in fact indoor air quality is highly polluted have led to a lack of measures to address indoor air pollution.

Accordingly, the Amendment prescribes that when measuring indoor air quality, carbon monoxide, carbon dioxide, fine dust, and other pollutants specified by the Ordinance of the Ministry of Environment shall be measured on a quarterly basis, and other pollutants shall be measured once per year, thereby aiming to improve the accuracy of indoor air quality measurements (Article 12, paragraph 2).

Require owners, etc., of public-use facilities, when measuring indoor air quality, to take quarterly measurements of carbon monoxide, carbon dioxide, fine dust, and other pollutants specified by the Ordinance of the Ministry of Environment, and to keep and preserve the results (Article 12, paragraph 2)