Including filter system and high-performance PCBs filter.
PCBs are a group of industrial chemicals that persist in the environment and can show up in water supplies. Also called polychlorinated biphenyls, they were commonly used in older electrical equipment and various manufacturing settings. Once they enter waterways, PCBs can be slow to break down and may linger at low levels for extended periods. Portland homeowners usually hear about them from utility notices, neighbors, or private water testing, and it’s natural to want straightforward answers about your household water.
Because PCBs are typically present in very small amounts, you won’t be able to see, taste, or smell them in tap water. They can reach drinking water through historical contamination, sediment disturbance, or runoff that carries pollutants into surface waters. Even when Portland’s tap looks clear, concerns about long-term exposure and everyday use—cooking, bathing, and laundry—can still be valid. Treating water at the whole-house level ensures every faucet and appliance in your home is covered, not just a single point of use.
The most effective single-filter choice for a whole-house system to remove PCBs is a quality activated carbon filter, typically using catalytic carbon or a carbon block designed for strong adsorption. PCBs are hydrophobic organic compounds, so they are better captured by carbon media than by basic sediment filters. As Portland water flows through the carbon bed, polychlorinated biphenyls tend to adhere to the carbon surface and are reduced before reaching your taps. A whole-house carbon stage also improves overall water quality by targeting other organic contaminants with similar properties.
For reliable PCB reduction, an activated carbon system needs adequate contact time and enough media volume to handle your home’s peak flow. A sediment pre-filter is commonly installed ahead of the carbon to prevent premature clogging, while the carbon stage does the bulk of the PCB adsorption. Regular sizing, maintenance, and media or cartridge replacement are important because adsorption capacity is finite. Mr. Pure Water in Portland can help size and install a whole-house carbon system so PCBs are addressed where water enters your plumbing.