
What are Trihalomethanes? Trihalomethanes (THMs) are a group of chemical compounds formed as disinfection by-products (DBPs) when disinfectants such as chlorine or chloramine—used to kill harmful b...

What is Trichloroethylene? Trichloroethylene (commonly called TCE) is a volatile organic compound (VOC) and a recognized human carcinogen. It was once widely used in industry and households as a de...

What is Mercury? Mercury is a naturally occurring element found in air, soil, and water. It exists in three main forms: Elemental mercury (metallic mercury): historically used in thermometers, fl...

What is Lead? Lead is a toxic heavy metal found naturally in the earth’s crust but hazardous to human health when ingested. Unlike many other contaminants, lead is not typically present in water so...

What are Human Hormones? Human hormones are natural chemical messengers that regulate many essential processes in the body, including growth, reproduction, metabolism, and stress response. While th...

What is HAA5? HAA5 refers to a group of five haloacetic acids (HAAs) — chemical byproducts that form when disinfectants like chlorine or chloramine react with natural organic matter in water. The f...

What is Fluoride? Fluoride is a mineral compound derived from fluorine, one of the most abundant elements on Earth. Naturally, it seeps into groundwater as water flows through rocks and soil rich i...

What is Estrogen? Estrogen is a group of naturally occurring sex hormones that play a vital role in regulating the female reproductive system and secondary sex characteristics. The main forms inclu...

What is Chloroform? Chloroform (CHCl₃), also known as trichloromethane, is a volatile liquid and part of a group of chemicals called trihalomethanes (THMs). While chloroform was once widely used in...

What is BPA? Bisphenol A (BPA) is a synthetic industrial compound commonly used to make plastics and epoxy resins. Since the 1950s, BPA has been widely used to manufacture items such as water bottl...
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