identify one human activity that has increased the amount of lead in drinking water. Then explain the water filtration method best suited to remove lead from the drinking water supply
One human activity that has increased the amount of lead in drinking water is the use of lead pipes and plumbing fixtures. These pipes and fixtures were commonly used in buildings and homes until the early 1900s. However, they can still be found in some older buildings and homes today.
The most effective water filtration method to remove lead from the drinking water supply is reverse osmosis. Reverse osmosis is a water filtration system that uses a semi-permeable membrane to remove impurities, including lead, from the water. The water is forced through the membrane, which traps the impurities and allows clean water to pass through. This method is highly effective at removing lead, as well as other contaminants, from the water supply. It is also relatively simple and affordable to install, making it a popular choice for residential and commercial applications.
One human activity that has increased the amount of lead in drinking water is the use of lead pipes for water distribution systems. In the past, lead pipes were commonly used in plumbing, particularly in older buildings. Over time, the corrosion of these pipes can result in lead leaching into the drinking water supply.
To remove lead from drinking water, a reliable water filtration method is necessary. The most effective method is to use a combination of point-of-entry and point-of-use filtration systems.
1. Point-of-entry (POE) filtration: This type of filtration system is installed at the main water line where it enters the building. POE filters are designed to treat all water entering the building, ensuring that lead and other contaminants are removed or reduced throughout the entire plumbing system.
The most suitable POE filtration method to remove lead is activated carbon filtration or granular activated carbon (GAC) filtration. GAC filters work by adsorption, where the activated carbon material attracts and traps lead particles in the water. It effectively removes both dissolved and particulate lead, providing a high level of protection for all faucets and fixtures.
2. Point-of-use (POU) filtration: This filtration system is typically installed at specific faucets or outlets used for drinking and cooking, such as a kitchen sink or a water dispenser. POU filters are an additional layer of protection, specifically targeting contaminants in water sources intended for consumption.
For lead removal at the point of use, a reverse osmosis (RO) system is recommended. Reverse osmosis utilizes a semipermeable membrane to remove various contaminants, including lead, by forcing water through the membrane while trapping impurities. RO systems can eliminate up to 99% of lead particles, ensuring safe drinking water at specific outlets.
By combining point-of-entry (POE) activated carbon filtration and point-of-use (POU) reverse osmosis (RO) filtration, the lead content in drinking water can be significantly reduced, if not completely eliminated. It is important to consult with water treatment professionals or experts to determine the most appropriate filtration systems for a specific situation and ensure their proper installation and maintenance.