service areas include Apex, Durham, Raleigh and surrounding areas

DRH Environmental Services LLC

For more information or a quote for your needs, please call  919-914-1110 or email You can also fill out our quote form on the Contact Us  page.


Common biological dust components such as mold, bacteria, and pollen are not regulated by any State or Federal agency, and as such have no mandated permissible exposure limits (PEL) or threshold limit values by which to unilaterally determine the habitability of any indoor environment. Further, all individuals react differently to exposure to indoor molds, which makes establishing such limits applicable to all individuals virtually impossible. When assessing the indoor air quality of an environment, one must take into consideration the occupants or proposed occupants and their individual sensitivity with respect to indoor environmental contaminants. 

The air quality inside your home or office directly contributes to the health and well-being of everyone who lives and works there. Mold is one of many contaminants that, if present, can pose serious risks to allergy and asthma sufferers and otherwise healthy individuals and pets as well. 

Mold Testing services include:

  • Visual inspection to detect if mold is present and document extent of mold growth.
  • Air and surface sampling to identify what types of mold are present.
  • Measurement of concentrations of particles and mold spores in the air.
  • Moisture measurements to determine if moisture is present in building materials.
  • Independent laboratory analysis of samples taken

DRH will provide verbal results the next day after sampling.  A report with identified mold related issues, laboratory results, explanation of laboratory results, and recommendations  will follow within 3 -5 business days.