Dubai Municipality's Technical Guidelines for Indoor Air Quality for Healthy Life contain two different sets of figures for total volatile organic compounds and formaldehyde. The first applies to new buildings seeking an optional Dubai Municipality indoor air quality certificate, while the second addresses existing buildings under provisions expressed in mandatory terms within the guideline.
The relevant document is Dubai Municipality's Technical Guidelines for Indoor Air Quality for Healthy Life, reference DM-HSD-GU119-IAQ, Version 4, issued on 11 December 2024 by the Health and Safety Department, Environmental Health Section. Its scope excludes premises exclusively dedicated to industrial and medical sectors, so its building provisions should not be applied to those excluded premises without a separate basis.
Testing under the guideline must be carried out by a company or laboratory accredited by the Emirates International Accreditation Centre, EIAC. This requirement concerns the competence and recognised scope of the testing provider. It does not remove the need to identify the correct table, sampling period, method and building category.
The guideline's fungal, bacterial and humidity figures are covered on the mould and indoor air quality resource.
Table 1 sits under clause 9-8-3. That clause states that buildings which optionally apply the listed procedures will be awarded an indoor air quality certificate by Dubai Municipality. The figures in Table 1 are therefore entry conditions for a voluntary certification route for new buildings, not general statutory duties applying to every new building in Dubai.
For TVOC, Table 1 gives a long-term maximum acceptable concentration of 300 micrograms per cubic metre over 8 hours. It also gives a short-term maximum acceptable concentration of 3 ppm and a threshold limit value ceiling of 5.5 ppm. The table therefore presents three distinct metrics rather than one interchangeable TVOC limit.
For formaldehyde, Table 1 gives a long-term maximum acceptable concentration of 0.01 ppm over 8 hours. Its short-term maximum acceptable concentration is 0.08 ppm, equal to 0.1 milligrams per cubic metre, over 30 minutes. The threshold limit value ceiling is 1 ppm.
Each figure should be reported with its averaging period and with the voluntary-certificate status of clause 9-8-3. Removing either part changes the meaning of the number and can make an optional certification criterion appear to be a general legal obligation.
Table 2 sits under clause 9-8-4 and applies to existing buildings within the guideline's scope. Unlike clause 9-8-3, clause 9-8-4 contains no "optionally" qualifier and states that testing must be carried out. Table 2 is therefore expressed in mandatory terms within Dubai Municipality's technical guideline.
That wording does not make the guideline statutory law. The accurate description is that Table 2 is not voluntary and is expressed in mandatory terms within the technical guideline. It should not be described either as an optional certificate route or as a universal legal testing duty imposed by Dubai law.
For TVOC, Table 2 gives 0.6 milligrams per cubic metre over 8 hours, equal to 600 micrograms per cubic metre. This is twice the Table 1 long-term value of 300 micrograms per cubic metre over 8 hours. The two figures are not alternative expressions of the same requirement; they belong to different tables and different building routes.
For formaldehyde, Table 2 gives 0.01 ppm over 8 hours and 0.08 ppm, equal to 0.1 milligrams per cubic metre, over 30 minutes. The long-term and short-term figures therefore match those stated in Table 1, although the status and building category of the two tables differ.
The tables are arranged around Long Term Exposure, Short Term Exposure and Threshold Limit Value Ceiling. Each part has its own concentration and, where stated, its own averaging time. Reading horizontally across the wrong column can detach a concentration from the period that gives it meaning.
The most common error concerns formaldehyde. The Dubai Municipality long-term figure is 0.01 ppm over 8 hours. The 0.08 ppm figure belongs to the short-term column and is paired with 30 minutes. It is therefore incorrect to attribute 0.08 ppm over 8 hours to Dubai Municipality.
This error is not a minor wording issue. A short-term criterion is intended to address a shorter concentration episode, while an 8-hour value represents a longer averaging period. Substituting the short-term concentration into the long-term column changes the benchmark substantially and can alter the conclusion of an assessment.
The safest reporting practice is to reproduce the concentration and averaging period together, identify the table and state its status. A standalone number, particularly 0.08 ppm, is too easy to misread when the source instrument contains several adjacent columns.
Clause 9-8-9 states that the 8-hour average is the compliance benchmark except for the alternative measurement of TVOC. Where a sampling point fails TVOC but complies with all ten individual VOC objectives in Table 4, that sampling point is regarded as passing for TVOC.
This route recognises that a combined TVOC result is not a toxicological limit for a single substance. A high total may arise from compounds with different properties, so the guideline allows a more specific comparison where the required individual analysis has been completed.
The individual VOCs are measured by methods based on the United States EPA organic TO compendium procedures. The alternative should not be treated as a casual reinterpretation of a failed TVOC result. It depends on the full Table 4 set being assessed and all relevant individual objectives being met.
Table 4 gives 8-hour values of 17 micrograms per cubic metre for benzene, 10 micrograms per cubic metre for naphthalene, 230 micrograms per cubic metre for trichloroethylene and 250 micrograms per cubic metre for tetrachloroethylene.
It also gives 500 micrograms per cubic metre for 1,2-dichlorobenzene, 200 micrograms per cubic metre for 1,4-dichlorobenzene, 1,092 micrograms per cubic metre for toluene and 1,447 micrograms per cubic metre for xylene. Polycyclic aromatic hydrocarbons are listed at 0.012 nanograms per cubic metre over 8 hours.
These values should be reproduced in the mass units stated here. Several ppm conversions printed in the source are arithmetically unreliable, so adding or repeating those conversions would create avoidable confusion. The alternative route is strongest when the laboratory report keeps the stated mass units and clearly shows the result for each individual compound.
A report should begin by identifying whether the space is being assessed as a new building under clause 9-8-3 or as an existing building under clause 9-8-4. It should then identify the applicable table, the averaging period, the building condition during sampling and the EIAC accreditation status of the testing company or laboratory.
For TVOC, the report should avoid comparing an existing-building result with the stricter Table 1 figure unless the purpose is expressly to assess the voluntary new-building certificate route. Conversely, the Table 2 value should not be used to relax the Table 1 entry condition for a new-building certification assessment.
For formaldehyde, the distinction is mainly one of averaging period rather than different concentrations between the two tables. The 0.01 ppm figure is the 8-hour value, and the 0.08 ppm figure is the 30-minute value. A conclusion should state which period was actually measured and whether the sampling design supports that comparison.
Where TVOC exceeds the applicable 8-hour objective, the clause 9-8-9 route may be considered. It should be documented as the guideline's specific alternative pathway, not as a general claim that an elevated TVOC result can be ignored.
Reading the tables correctly is one question; demonstrating compliance with them is another, and how clause 9-8-4 is used as a compliance route for an occupied building.
The two limits described on this page sit in different tables and under different clauses, and neither carries the same status in a new building as in an existing one; that clause status is set out in full in Regulation of indoor chemical contaminants in the UAE.
Dubai Municipality DM-HSD-GU119-IAQ Version 4 (11 December 2024) — clause 9-8-3 figures apply to a voluntary certificate route; clause 9-8-4 is worded as mandatory within the guideline
No. Clause 9-8-3 uses optional wording and links the procedures to the award of a Dubai Municipality indoor air quality certificate. Table 1 is an entry condition for that voluntary certification route.
No. Clause 9-8-4 states that testing must be carried out and contains no optional qualifier. Table 2 is expressed in mandatory terms within the technical guideline, although the guideline is not statutory law.
The 8-hour figure is 0.01 ppm. The 0.08 ppm value belongs to the 30-minute short-term column and should not be described as an 8-hour Dubai Municipality value.
The tables address different building routes. Table 1 uses 300 micrograms per cubic metre over 8 hours for the voluntary new-building certification route, while Table 2 uses 600 micrograms per cubic metre over 8 hours for existing buildings.
Yes, but only through the specific clause 9-8-9 alternative. The sampling point must comply with all ten individual VOC objectives in Table 4 before it is regarded as passing for TVOC.