The effect of plastic pipes on the quality of tap water
The impact of plastic pipes on human health
The impact of plastic pipes on water quality in household plumbing and water distribution systems causes leakage of metals such as lead into drinking water. Lead, as the most widespread heavy and toxic element in the environment, is naturally present in river water at a level of 1 to 10 micrograms per liter. Lead compounds enter water sources as a result of mining, battery manufacturing, fossil fuel, paint, and glass and enamel industries.
The use of thermoplastic pipes has grown over the past 60 years. Thermoplastic pipes installed in the world are 54 to 69 percent, and among these types of pipes, polyvinyl chloride pipes account for 62 percent and various shapes for 33 percent. The reason for the widespread use of thermoplastic pipes is their versatility, easy installation, corrosion resistance, good structural strength, low cost, and smooth walls.
Lead leakage into the environment and the human food chain
Stabilizers in the manufacture of thermoplastic materials are salts of various metals such as lead, cadmium, barium, zinc carboxylate and some monoalkyl tin compounds such as carboxylates and mercaptolates. The concern is that these chemicals will leak from pipes over time and cause health problems. Lead accumulates in aquatic plants and thus enters the food chain and may harm the body.
The relationship between lead and children's health
The impact of plastic pipes on water quality is evident with lead. Lead, as the second most hazardous substance in the Agency for Toxic Substances and Disease Registry, is associated with hyperactivity disorders, attention deficit, decreased IQ, decreased cognitive function, and behavioral development in children, and due to the immaturity of the immune system, central nervous system, and respiratory organs, and the incomplete development of the detoxification system, children are more at risk of lead. Lead in Drinking Water (Toxicity, Water Resources, Pharmacology and Pharmacy, Biochemistry, and Molecular Biology) has shown that research on lead in drinking water is still necessary to preserve human life.
Isfahan Water Supply Network Research
In the research conducted, heavy metal leakage (lead, cadmium, nickel, chromium, zinc, and tin) from 2 types of polyvinyl chloride pipes and 4 types of polypropylene pipes in the Isfahan water supply network was investigated, and it was found that the amount of lead in new and old polyvinyl chloride pipes was higher than in other pipes.
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