Is orange mold worse than black mold?

The color of mold can be influenced by food source and humidity level, even light. Mold color is irrelevant in determining toxicity.

haywardscore.com - Ask An Expert: What Does Mold Color Indicate? - Hayward Score

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Ask an Expert is an occasional feature where we pose a question submitted by readers to Healthy Home Director Carl Grimes and Healthy Building Scientist Joe Medosch. You cannot tell the kind of mold by the color. Mold is identified by the structure and the characteristics of the spores and growth structures (morphology)*. Furthermore, the color of your actively growing mold indicates nothing about health risk and exposure.

A few simple facts about mold and its color:

Mold can be any color. While most mold growth is often black, grey, or greenish, it can be brown, purple, orange, pink, yellow, red, white, or even a combination of colors. The color of mold can be influenced by food source and humidity level, even light. The same mold can be different colors in different conditions and can even change over time. The image on the left side of the photo on the left is fresh while the image on the right side is 3 days older.** Mold color is irrelevant in determining toxicity. Mold growth that is black in color is not always producing mycotoxins and neither is mold growth of any other color. Assessing the “risk” based only on the color of mold growth will lead to incorrect conclusions. You should pay attention to mold of any color. Active mold growth means there is, or has been, a source of moisture. The moisture source must be identified and stopped. The presence of visible mold growth and your personal reaction is more important than color. Sensitivity to mold and severity of reactions varies from person to person, even between people living in the same household. How you react to mold is most important to your determining the need to take action. The principles of mold removal are always the same regardless of mold color. First, identify and stop the cause of the excess moisture that is causing mold growth. Second, carefully physically remove the visible mold growth with methods that keep it close to the work location rather becoming airborne and circulating throughout the house. How you accomplish this, cleaning vs. removal of damaged items/materials, depends on the extent of mold growth, the water source (i.e., surface condensation, bulk water leak, material penetration, etc), and underlying damage, not on the color of the mold. The need for containment of the work area is determined by the potential for exposure, the occupant and size of the contaminated area. Learn more truths and myths about mold in our article, Black Toxic Mold: The Truths and Myths. * Based on descriptions by accredited microbiology labs plus the primary training source for microscopy: ww.emlab.com , www.emsl.com , http://www.prestige-em.com , www.qlabusa.com , www.mccroneinstitute.org

**Photo courtesy EPA and Chin Yang Ph.D. https://www.epa.gov/mold/mold-image-library

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What does it mean when the underground service alert marks the grounds with orange stakes and markings?

Orange: Communication, alarm or signal lines, cables or conduits, and fiber.

callbeforeyoudig.org - APWA Uniform Color Code for Marking Underground Facilities

APWA Uniform Color Code for Marking Underground Facilities

Underground facilities shall be marked in accordance with the following designated color code: White White: Pre-marking of the outer limits of the proposed excavation or marking the centerline and width of proposed lineal installations of buried facilities. Pink Pink: Temporary Survey Markings. Red Red: Electric power lines, cables or conduit, and lighting cables. Yellow Yellow: Gas, oil, steam, petroleum, or gaseous materials. Orange Orange: Communication, alarm or signal lines, cables or conduits, and fiber. Blue Blue: Potable water. Purple Purple: Slurry, irrigation and reclaimed water. Green Green: Sewers, drainage facilities or other drain lines. Pre-marking of the outer limits of the proposed excavation or marking the centerline and width of proposed lineal installations of buried facilities.Temporary Survey Markings.Electric power lines, cables or conduit, and lighting cables.Gas, oil, steam, petroleum, or gaseous materials.Communication, alarm or signal lines, cables or conduits, and fiber.Potable water.Slurry, irrigation and reclaimed water.Sewers, drainage facilities or other drain lines. Permanently Marking Underground Facilities The following recommendations shall be followed when permanently marking underground facilities: Markers must be clearly visible. Marker material shall be durable in nature. (Treated Wood, Metallic, UV Resistant Plastics, etc.) Mark culverts if not readily visible. Mark both ends of all non-visible underground facilities. Identify type of underground facility if not recognizable from the surface. It is also recommended that your state's Call Center number appear on the marker if the marker is of sufficient size. If you have questions regarding the APWA Uniform Color Code, we recommend contacting your state's Utility Notification Center. For contact information, please choose your state above and refer to your state specific phone number.

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