Including filter system and high-performance PCBs filter.
PCBs are a group of industrial chemicals, also called polychlorinated biphenyls, that persist in the environment and can sometimes turn up in water supplies. They were commonly used in older electrical gear and certain manufacturing, and when they reach waterways they can be slow to break down. Homeowners in Marathon may first hear about PCBs through utility reports, neighborhood conversations near places like Key Colony Beach or Grassy Key, or from independent water testing of private wells and cisterns.
Because PCBs usually occur at very low concentrations, you typically won’t see, smell, or taste them in tap water. They can enter drinking sources via historical contamination, disturbed sediments, or runoff that carries pollutants into surface waters. In Marathon — where municipal supply, local wells or cisterns are common and coastal weather can affect systems — homeowners often worry about long-term exposure even when water looks clear. A whole-house solution protects water used for cooking, bathing, laundry and every day routines throughout your home, not just at a single faucet.
The most effective single-filter option for whole-house removal of PCBs is a high-quality activated carbon unit, typically using catalytic carbon or carbon block media made for strong adsorption. PCBs are hydrophobic organic compounds, so they’re captured more effectively by carbon media than by basic sediment filters. As Marathon water passes through the carbon bed, polychlorinated biphenyls can adhere to the carbon surface and be reduced before water reaches your taps, while also cutting other organics that travel with similar sources.
For reliable PCB reduction, an activated carbon filter must provide sufficient contact time and media volume to match your home’s flow — especially important in Marathon where moderate water hardness and coastal conditions can affect system performance. It’s common to pair a sediment pre-filter upstream so the carbon stage doesn’t clog prematurely; the carbon media does the primary PCB removal. Proper sizing and regular media or cartridge replacement are essential because adsorption capacity is finite, and Mr. Pure Water can design a whole-house carbon system for your Marathon property to treat water as it enters your plumbing.